Make places and roads accessible to VoiceOver (#9950)

* [ios] Summarize places, roads after zooming with VoiceOver

After zooming, MGLMapView’s accessibility value now indicates the number of visible roads and lists out a few places visible in the current viewport, starting with the features at the highest z-index (not necessarily the largest or the closest to the center of the view). Avoid saying that no annotations are visible.

* [ios] Allow VoiceOver to navigate among place features

Split out a separate header for the various accessibility elements tied to MGLMapView. Wrap place features in accessibility elements and insert them into the narration order after the visible annotations but before the attribution button. Refactored MGLMapView’s accessibility code to rely on ranges to avoid off-by-one errors.

* [ios] Post layout change notification when fully rendered

Post a layout change notification when fully finishing a map render.

* [ios, macos] Moved MGLVectorSource+MGLAdditions to more specific group

* [ios] Localize accessibility feature names

* [ios] Find place feature accessibility elements by identifier

* [ios] Refactored accessibility traits

Also created a new MGLPlaceFeatureAccessibilityElement class.

* [ios] Sort accessibility elements by screen distance from center

Sort annotation accessibility elements by screen distance, not the hypotenuse of coordinates, which can yield incorrect results when the map is rotated or tilted or when the user is located at high latitudes. Sort place feature accessibility elements by screen distance as well.

* [ios] Create a place feature accessibility element, not an abstract feature accessibility element

* [ios] Only query for visible place features once per camera

Improved accessibility performance after changing the map camera. MGLMapView no longer queries the map for place features once per place feature.

* [ios] Made roads accessible

Wrap visible road features in accessibility elements described by the road name, route number, and general direction of travel.

* [ios] Cleaned up radian conversions

* [ios] Thickened road accessibility elements

* [ios] Made unioned roads accessible

* [ios] Consistently sort accessibility elements

Also fixed an issue causing road feature accessibility elements to get treated like place feature accessibility elements.

* [ios] Announce direction of divided roads

Announce the direction of a divided road based on the direction of its first polyline.

* [ios] Refined announced elevation units

* [ios] Romanize feature names

* [ios] Updated changelog

* [ios] Delay zoom announcement

A 100-millisecond delay is enough for the post-zooming announcement to reflect the new zoom level rather than the previous zoom level.

* [ios] Consolidated geometry functions

Adopted MGLGeometry_Private.h in the accessibility code, forcing a conversion to Objective-C++. Avoid inlining some of the more complex geometric functions.

* [ios] Fixed feature name romanization in accessibility labels

NSLocale.scriptCode is only set when the locale identifier explicitly specifies a script. Use NSOrthography to identify the dominant orthography regardless of locale.

Also added a unit test of feature accessibility element labels.

* [ios] Added tests for place, road accessibility values

* [ios] Announce one-way roads

A road feature’s accessibility value now indicates whether the road is a one-way road.

13 files changed, 880 insertions, 163 deletions

diff --git a/platform/darwin/src/MGLGeometry.mm b/platform/darwin/src/MGLGeometry.mm
index 43bf74c407..715a70f0b8 100644
--- a/platform/darwin/src/MGLGeometry.mm
+++ b/platform/darwin/src/MGLGeometry.mm
@@ -62,6 +62,42 @@ double MGLZoomLevelForAltitude(CLLocationDistance altitude, CGFloat pitch, CLLoc
     return ::log2(mapPixelWidthAtZoom / mbgl::util::tileSize);
 }
 
+MGLRadianDistance MGLDistanceBetweenRadianCoordinates(MGLRadianCoordinate2D from, MGLRadianCoordinate2D to) {
+    double a = pow(sin((to.latitude - from.latitude) / 2), 2)
+        + pow(sin((to.longitude - from.longitude) / 2), 2) * cos(from.latitude) * cos(to.latitude);
+    
+    return 2 * atan2(sqrt(a), sqrt(1 - a));
+}
+
+MGLRadianDirection MGLRadianCoordinatesDirection(MGLRadianCoordinate2D from, MGLRadianCoordinate2D to) {
+    double a = sin(to.longitude - from.longitude) * cos(to.latitude);
+    double b = cos(from.latitude) * sin(to.latitude)
+    - sin(from.latitude) * cos(to.latitude) * cos(to.longitude - from.longitude);
+    return atan2(a, b);
+}
+
+MGLRadianCoordinate2D MGLRadianCoordinateAtDistanceFacingDirection(MGLRadianCoordinate2D coordinate,
+                                                                   MGLRadianDistance distance,
+                                                                   MGLRadianDirection direction) {
+    double otherLatitude = asin(sin(coordinate.latitude) * cos(distance)
+                                + cos(coordinate.latitude) * sin(distance) * cos(direction));
+    double otherLongitude = coordinate.longitude + atan2(sin(direction) * sin(distance) * cos(coordinate.latitude),
+                                                         cos(distance) - sin(coordinate.latitude) * sin(otherLatitude));
+    return MGLRadianCoordinate2DMake(otherLatitude, otherLongitude);
+}
+
+CLLocationDirection MGLDirectionBetweenCoordinates(CLLocationCoordinate2D firstCoordinate, CLLocationCoordinate2D secondCoordinate) {
+    // Ported from https://github.com/mapbox/turf-swift/blob/857e2e8060678ef4a7a9169d4971b0788fdffc37/Turf/Turf.swift#L23-L31
+    MGLRadianCoordinate2D firstRadianCoordinate = MGLRadianCoordinateFromLocationCoordinate(firstCoordinate);
+    MGLRadianCoordinate2D secondRadianCoordinate = MGLRadianCoordinateFromLocationCoordinate(secondCoordinate);
+    
+    CGFloat a = sin(secondRadianCoordinate.longitude - firstRadianCoordinate.longitude) * cos(secondRadianCoordinate.latitude);
+    CGFloat b = (cos(firstRadianCoordinate.latitude) * sin(secondRadianCoordinate.latitude)
+                 - sin(firstRadianCoordinate.latitude) * cos(secondRadianCoordinate.latitude) * cos(secondRadianCoordinate.longitude - firstRadianCoordinate.longitude));
+    MGLRadianDirection radianDirection = atan2(a, b);
+    return radianDirection * 180 / M_PI;
+}
+
 CGPoint MGLPointRounded(CGPoint point) {
 #if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
     CGFloat scaleFactor = [UIScreen instancesRespondToSelector:@selector(nativeScale)] ? [UIScreen mainScreen].nativeScale : [UIScreen mainScreen].scale;
diff --git a/platform/darwin/src/MGLGeometry_Private.h b/platform/darwin/src/MGLGeometry_Private.h
index 87a19989c1..8b9c6c2327 100644
--- a/platform/darwin/src/MGLGeometry_Private.h
+++ b/platform/darwin/src/MGLGeometry_Private.h
@@ -105,38 +105,26 @@ NS_INLINE MGLRadianCoordinate2D MGLRadianCoordinateFromLocationCoordinate(CLLoca
                                      MGLRadiansFromDegrees(locationCoordinate.longitude));
 }
 
-/*
+/**
  Returns the distance in radians given two coordinates.
  */
-NS_INLINE MGLRadianDistance MGLDistanceBetweenRadianCoordinates(MGLRadianCoordinate2D from, MGLRadianCoordinate2D to)
-{
-    double a = pow(sin((to.latitude - from.latitude) / 2), 2)
-                + pow(sin((to.longitude - from.longitude) / 2), 2) * cos(from.latitude) * cos(to.latitude);
-    
-    return 2 * atan2(sqrt(a), sqrt(1 - a));
-}
+MGLRadianDistance MGLDistanceBetweenRadianCoordinates(MGLRadianCoordinate2D from, MGLRadianCoordinate2D to);
 
-/*
+/**
  Returns direction in radians given two coordinates.
  */
-NS_INLINE MGLRadianDirection MGLRadianCoordinatesDirection(MGLRadianCoordinate2D from, MGLRadianCoordinate2D to) {
-    double a = sin(to.longitude - from.longitude) * cos(to.latitude);
-    double b = cos(from.latitude) * sin(to.latitude)
-                - sin(from.latitude) * cos(to.latitude) * cos(to.longitude - from.longitude);
-    return atan2(a, b);
-}
+MGLRadianDirection MGLRadianCoordinatesDirection(MGLRadianCoordinate2D from, MGLRadianCoordinate2D to);
 
-/*
- Returns coordinate at a given distance and direction away from coordinate.
+/**
+ Returns a coordinate at a given distance and direction away from coordinate.
  */
-NS_INLINE MGLRadianCoordinate2D MGLRadianCoordinateAtDistanceFacingDirection(MGLRadianCoordinate2D coordinate,
-                                                                             MGLRadianDistance distance,
-                                                                             MGLRadianDirection direction) {
-    double otherLatitude = asin(sin(coordinate.latitude) * cos(distance)
-                                + cos(coordinate.latitude) * sin(distance) * cos(direction));
-    double otherLongitude = coordinate.longitude + atan2(sin(direction) * sin(distance) * cos(coordinate.latitude),
-                                                         cos(distance) - sin(coordinate.latitude) * sin(otherLatitude));
-    return MGLRadianCoordinate2DMake(otherLatitude, otherLongitude);
-}
+MGLRadianCoordinate2D MGLRadianCoordinateAtDistanceFacingDirection(MGLRadianCoordinate2D coordinate,
+                                                                   MGLRadianDistance distance,
+                                                                   MGLRadianDirection direction);
+
+/**
+ Returns the direction from one coordinate to another.
+ */
+CLLocationDirection MGLDirectionBetweenCoordinates(CLLocationCoordinate2D firstCoordinate, CLLocationCoordinate2D secondCoordinate);
 
 CGPoint MGLPointRounded(CGPoint point);
diff --git a/platform/darwin/src/MGLStyle.mm b/platform/darwin/src/MGLStyle.mm
index 52efc7a85a..244fb94ef9 100644
--- a/platform/darwin/src/MGLStyle.mm
+++ b/platform/darwin/src/MGLStyle.mm
@@ -638,7 +638,7 @@ static NSURL *MGLStyleURL_trafficNight;
             self.URL ? [NSString stringWithFormat:@"\"%@\"", self.URL] : self.URL];
 }
 
-#pragma mark Style language preferences
+#pragma mark Mapbox Streets source introspection
 
 - (void)setLocalizesLabels:(BOOL)localizesLabels
 {
@@ -749,4 +749,29 @@ static NSURL *MGLStyleURL_trafficNight;
     }
 }
 
+- (NS_SET_OF(MGLVectorSource *) *)mapboxStreetsSources {
+    return [self.sources objectsPassingTest:^BOOL (__kindof MGLVectorSource * _Nonnull source, BOOL * _Nonnull stop) {
+        return [source isKindOfClass:[MGLVectorSource class]] && source.mapboxStreets;
+    }];
+}
+
+- (NS_ARRAY_OF(MGLStyleLayer *) *)placeStyleLayers {
+    NSSet *streetsSourceIdentifiers = [self.mapboxStreetsSources valueForKey:@"identifier"];
+    
+    NSSet *placeSourceLayerIdentifiers = [NSSet setWithObjects:@"marine_label", @"country_label", @"state_label", @"place_label", @"water_label", @"poi_label", @"rail_station_label", @"mountain_peak_label", nil];
+    NSPredicate *isPlacePredicate = [NSPredicate predicateWithBlock:^BOOL (MGLVectorStyleLayer * _Nullable layer, NSDictionary<NSString *, id> * _Nullable bindings) {
+        return [layer isKindOfClass:[MGLVectorStyleLayer class]] && [streetsSourceIdentifiers containsObject:layer.sourceIdentifier] && [placeSourceLayerIdentifiers containsObject:layer.sourceLayerIdentifier];
+    }];
+    return [self.layers filteredArrayUsingPredicate:isPlacePredicate];
+}
+
+- (NS_ARRAY_OF(MGLStyleLayer *) *)roadStyleLayers {
+    NSSet *streetsSourceIdentifiers = [self.mapboxStreetsSources valueForKey:@"identifier"];
+    
+    NSPredicate *isPlacePredicate = [NSPredicate predicateWithBlock:^BOOL (MGLVectorStyleLayer * _Nullable layer, NSDictionary<NSString *, id> * _Nullable bindings) {
+        return [layer isKindOfClass:[MGLVectorStyleLayer class]] && [streetsSourceIdentifiers containsObject:layer.sourceIdentifier] && [layer.sourceLayerIdentifier isEqualToString:@"road_label"];
+    }];
+    return [self.layers filteredArrayUsingPredicate:isPlacePredicate];
+}
+
 @end
diff --git a/platform/darwin/src/MGLStyle_Private.h b/platform/darwin/src/MGLStyle_Private.h
index 92b08e844b..e5bd79dc02 100644
--- a/platform/darwin/src/MGLStyle_Private.h
+++ b/platform/darwin/src/MGLStyle_Private.h
@@ -14,6 +14,8 @@ namespace mbgl {
 @class MGLAttributionInfo;
 @class MGLMapView;
 @class MGLOpenGLStyleLayer;
+@class MGLVectorSource;
+@class MGLVectorStyleLayer;
 
 @interface MGLStyle (Private)
 
@@ -30,4 +32,11 @@ namespace mbgl {
 
 @end
 
+@interface MGLStyle (MGLStreetsAdditions)
+
+@property (nonatomic, readonly, copy) NS_ARRAY_OF(MGLVectorStyleLayer *) *placeStyleLayers;
+@property (nonatomic, readonly, copy) NS_ARRAY_OF(MGLVectorStyleLayer *) *roadStyleLayers;
+
+@end
+
 NS_ASSUME_NONNULL_END
diff --git a/platform/ios/CHANGELOG.md b/platform/ios/CHANGELOG.md
index c761761f27..d449379ea6 100644
--- a/platform/ios/CHANGELOG.md
+++ b/platform/ios/CHANGELOG.md
@@ -23,10 +23,9 @@ Mapbox welcomes participation and contributions from everyone. Please read [CONT
 * Fixed an issue that could cause antialiasing between polygons on the same layer to fail if the fill layers used data-driven styling for the fill color. ([#9699](https://github.com/mapbox/mapbox-gl-native/pull/9699))
 * The previously deprecated support for style classes has been removed. For interface compatibility, the API methods remain, but they are now non-functional.
 
-### Annotations and user interaction
+### Annotations
 
 * Fixed several bugs and performance issues related to the use of annotations backed by `MGLAnnotationImage`. The limits on the number and size of images and glyphs has been effectively eliminated and should now depend on hardware constraints. These fixes also apply to images used to represent icons in `MGLSymbolStyleLayer`. ([#9213](https://github.com/mapbox/mapbox-gl-native/pull/9213))
-* Increased the default maximum zoom level from 20 to 22. ([#9835](https://github.com/mapbox/mapbox-gl-native/pull/9835))
 * Added an `overlays` property to `MGLMapView`. ([#8617](https://github.com/mapbox/mapbox-gl-native/pull/8617))
 * Selecting an annotation no longer sets the user tracking mode to `MGLUserTrackingModeNone`. ([#10094](https://github.com/mapbox/mapbox-gl-native/pull/10094))
 * Added `-[MGLMapView cameraThatFitsShape:direction:edgePadding:]` to get a camera with zoom level and center coordinate computed to fit a shape. ([#10107](https://github.com/mapbox/mapbox-gl-native/pull/10107))
@@ -34,6 +33,11 @@ Mapbox welcomes participation and contributions from everyone. Please read [CONT
 * Fixed an issue where view annotations could be slightly misaligned. View annotation placement is now rounded to the nearest pixel. ([#10219](https://github.com/mapbox/mapbox-gl-native/pull/10219))
 * Fixed an issue where a shape annotation callout was not displayed if the centroid was not visible. ([#10255](https://github.com/mapbox/mapbox-gl-native/pull/10255))
 
+### User interaction
+
+* Users of VoiceOver can now swipe left and right to navigate among visible places, points of interest, and roads. ([#9950](https://github.com/mapbox/mapbox-gl-native/pull/9950))
+* Increased the default maximum zoom level from 20 to 22. ([#9835](https://github.com/mapbox/mapbox-gl-native/pull/9835))
+
 ### Other changes
 
 * Added a Bulgarian localization. ([#10309](https://github.com/mapbox/mapbox-gl-native/pull/10309))
diff --git a/platform/ios/ios.xcodeproj/project.pbxproj b/platform/ios/ios.xcodeproj/project.pbxproj
index d67537a3cb..ad17e00673 100644
--- a/platform/ios/ios.xcodeproj/project.pbxproj
+++ b/platform/ios/ios.xcodeproj/project.pbxproj
@@ -292,10 +292,15 @@
 		DA35A2CB1CCAAAD200E826B2 /* NSValue+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = DA35A2C81CCAAAD200E826B2 /* NSValue+MGLAdditions.m */; };
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 		DA35D0881E1A6309007DED41 /* one-liner.json in Resources */ = {isa = PBXBuildFile; fileRef = DA35D0871E1A6309007DED41 /* one-liner.json */; };
+		DA5DB12A1FABF1EE001C2326 /* MGLMapAccessibilityElementTests.m in Sources */ = {isa = PBXBuildFile; fileRef = DA5DB1291FABF1EE001C2326 /* MGLMapAccessibilityElementTests.m */; };
 		DA6408DB1DA4E7D300908C90 /* MGLVectorStyleLayer.h in Headers */ = {isa = PBXBuildFile; fileRef = DA6408D91DA4E7D300908C90 /* MGLVectorStyleLayer.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		DA6408DC1DA4E7D300908C90 /* MGLVectorStyleLayer.h in Headers */ = {isa = PBXBuildFile; fileRef = DA6408D91DA4E7D300908C90 /* MGLVectorStyleLayer.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		DA6408DD1DA4E7D300908C90 /* MGLVectorStyleLayer.m in Sources */ = {isa = PBXBuildFile; fileRef = DA6408DA1DA4E7D300908C90 /* MGLVectorStyleLayer.m */; };
 		DA6408DE1DA4E7D300908C90 /* MGLVectorStyleLayer.m in Sources */ = {isa = PBXBuildFile; fileRef = DA6408DA1DA4E7D300908C90 /* MGLVectorStyleLayer.m */; };
+		DA704CC21F65A475004B3F28 /* MGLMapAccessibilityElement.h in Headers */ = {isa = PBXBuildFile; fileRef = DA704CC01F65A475004B3F28 /* MGLMapAccessibilityElement.h */; };
+		DA704CC31F65A475004B3F28 /* MGLMapAccessibilityElement.h in Headers */ = {isa = PBXBuildFile; fileRef = DA704CC01F65A475004B3F28 /* MGLMapAccessibilityElement.h */; };
+		DA704CC41F65A475004B3F28 /* MGLMapAccessibilityElement.mm in Sources */ = {isa = PBXBuildFile; fileRef = DA704CC11F65A475004B3F28 /* MGLMapAccessibilityElement.mm */; };
+		DA704CC51F65A475004B3F28 /* MGLMapAccessibilityElement.mm in Sources */ = {isa = PBXBuildFile; fileRef = DA704CC11F65A475004B3F28 /* MGLMapAccessibilityElement.mm */; };
 		DA72620B1DEEE3480043BB89 /* MGLOpenGLStyleLayer.h in Headers */ = {isa = PBXBuildFile; fileRef = DA7262091DEEE3480043BB89 /* MGLOpenGLStyleLayer.h */; settings = {ATTRIBUTES = (Public, ); }; };
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 		DA72620D1DEEE3480043BB89 /* MGLOpenGLStyleLayer.mm in Sources */ = {isa = PBXBuildFile; fileRef = DA72620A1DEEE3480043BB89 /* MGLOpenGLStyleLayer.mm */; };
@@ -802,6 +807,7 @@
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 		DA5C09BB1EFC486C0056B178 /* hu */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = hu; path = hu.lproj/Localizable.strings; sourceTree = "<group>"; };
+		DA5DB1291FABF1EE001C2326 /* MGLMapAccessibilityElementTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MGLMapAccessibilityElementTests.m; sourceTree = "<group>"; };
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 		DA618B111E68823600CB7F44 /* ru */ = {isa = PBXFileReference; lastKnownFileType = text.plist.stringsdict; name = ru; path = ru.lproj/Localizable.stringsdict; sourceTree = "<group>"; };
@@ -820,6 +826,8 @@
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+		DA704CC01F65A475004B3F28 /* MGLMapAccessibilityElement.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MGLMapAccessibilityElement.h; sourceTree = "<group>"; };
+		DA704CC11F65A475004B3F28 /* MGLMapAccessibilityElement.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = MGLMapAccessibilityElement.mm; sourceTree = "<group>"; };
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@@ -1119,6 +1127,8 @@
 		35599DB81D46AD7F0048254D /* Categories */ = {
 			isa = PBXGroup;
 			children = (
+				1FDD9D6D1F26936400252B09 /* MGLVectorSource+MGLAdditions.h */,
+				1FDD9D6E1F26936400252B09 /* MGLVectorSource+MGLAdditions.m */,
 				350098DA1D484E60004B2AF0 /* NSValue+MGLStyleAttributeAdditions.h */,
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 			);
@@ -1346,6 +1356,7 @@
 				3598544C1E1D38AA00B29F84 /* MGLDistanceFormatterTests.m */,
 				DA0CD58F1CF56F6A00A5F5A5 /* MGLFeatureTests.mm */,
 				DA2E885C1CC0382C00F24E7B /* MGLGeometryTests.mm */,
+				DA5DB1291FABF1EE001C2326 /* MGLMapAccessibilityElementTests.m */,
 				35E208A61D24210F00EC9A46 /* MGLNSDataAdditionsTests.m */,
 				1F95931C1E6DE2E900D5B294 /* MGLNSDateAdditionsTests.mm */,
 				DAE7DEC11E245455007505A6 /* MGLNSStringAdditionsTests.m */,
@@ -1423,6 +1434,8 @@
 				35CE617F1D4165C2004F2359 /* Categories */,
 				DAD165841CF4D06B001FF4B9 /* Annotations */,
 				DAD165851CF4D08B001FF4B9 /* Telemetry */,
+				DA704CC01F65A475004B3F28 /* MGLMapAccessibilityElement.h */,
+				DA704CC11F65A475004B3F28 /* MGLMapAccessibilityElement.mm */,
 				DA8848361CBAFB8500AB86E3 /* MGLMapView.h */,
 				DA17BE2F1CC4BAC300402C41 /* MGLMapView_Private.h */,
 				DA8848371CBAFB8500AB86E3 /* MGLMapView+IBAdditions.h */,
@@ -1620,8 +1633,6 @@
 		DAD165831CF4CFED001FF4B9 /* Categories */ = {
 			isa = PBXGroup;
 			children = (
-				1FDD9D6D1F26936400252B09 /* MGLVectorSource+MGLAdditions.h */,
-				1FDD9D6E1F26936400252B09 /* MGLVectorSource+MGLAdditions.m */,
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 				7E016D831D9E890300A29A21 /* MGLPolygon+MGLAdditions.m */,
 				7E016D7C1D9E86BE00A29A21 /* MGLPolyline+MGLAdditions.h */,
@@ -1762,6 +1773,7 @@
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 				3510FFEA1D6D9C7A00F413B2 /* NSComparisonPredicate+MGLAdditions.h in Headers */,
 				DA6408DB1DA4E7D300908C90 /* MGLVectorStyleLayer.h in Headers */,
+				DA704CC21F65A475004B3F28 /* MGLMapAccessibilityElement.h in Headers */,
 				DD0902AB1DB192A800C5BDCE /* MGLNetworkConfiguration.h in Headers */,
 				DA8848571CBAFB9800AB86E3 /* MGLMapboxEvents.h in Headers */,
 				35D3A1E61E9BE7EB002B38EE /* MGLScaleBar.h in Headers */,
@@ -1897,6 +1909,7 @@
 				558DE7A11E5615E400C7916D /* MGLFoundation_Private.h in Headers */,
 				3538AA1E1D542239008EC33D /* MGLForegroundStyleLayer.h in Headers */,
 				30E578181DAA85520050F07E /* UIImage+MGLAdditions.h in Headers */,
+				DA704CC31F65A475004B3F28 /* MGLMapAccessibilityElement.h in Headers */,
 				40F887711D7A1E59008ECB67 /* MGLShapeSource_Private.h in Headers */,
 				DABFB8631CBE99E500D62B32 /* MGLOfflineRegion.h in Headers */,
 				DA35A2B21CCA141D00E826B2 /* MGLCompassDirectionFormatter.h in Headers */,
@@ -2276,6 +2289,7 @@
 				DA2E88621CC0382C00F24E7B /* MGLOfflinePackTests.m in Sources */,
 				55E2AD131E5B125400E8C587 /* MGLOfflineStorageTests.mm in Sources */,
 				920A3E5D1E6F995200C16EFC /* MGLSourceQueryTests.m in Sources */,
+				DA5DB12A1FABF1EE001C2326 /* MGLMapAccessibilityElementTests.m in Sources */,
 				FAE1CDCB1E9D79CB00C40B5B /* MGLFillExtrusionStyleLayerTests.mm in Sources */,
 				DA35A2AA1CCA058D00E826B2 /* MGLCoordinateFormatterTests.m in Sources */,
 				357579831D502AE6000B822E /* MGLRasterStyleLayerTests.mm in Sources */,
@@ -2364,6 +2378,7 @@
 				DA88482A1CBAFA6200AB86E3 /* MGLTilePyramidOfflineRegion.mm in Sources */,
 				4049C29F1DB6CD6C00B3F799 /* MGLPointCollection.mm in Sources */,
 				35136D3F1D42273000C20EFD /* MGLLineStyleLayer.mm in Sources */,
+				DA704CC41F65A475004B3F28 /* MGLMapAccessibilityElement.mm in Sources */,
 				DA72620D1DEEE3480043BB89 /* MGLOpenGLStyleLayer.mm in Sources */,
 				DA88481A1CBAFA6200AB86E3 /* MGLAccountManager.m in Sources */,
 				3510FFFB1D6DCC4700F413B2 /* NSCompoundPredicate+MGLAdditions.mm in Sources */,
@@ -2451,6 +2466,7 @@
 				DAA4E4211CBB730400178DFB /* MGLOfflineStorage.mm in Sources */,
 				4049C2A01DB6CD6C00B3F799 /* MGLPointCollection.mm in Sources */,
 				35136D401D42273000C20EFD /* MGLLineStyleLayer.mm in Sources */,
+				DA704CC51F65A475004B3F28 /* MGLMapAccessibilityElement.mm in Sources */,
 				DA72620E1DEEE3480043BB89 /* MGLOpenGLStyleLayer.mm in Sources */,
 				DAA4E42F1CBB730400178DFB /* MGLCompactCalloutView.m in Sources */,
 				3510FFFC1D6DCC4700F413B2 /* NSCompoundPredicate+MGLAdditions.mm in Sources */,
diff --git a/platform/ios/resources/Base.lproj/Localizable.strings b/platform/ios/resources/Base.lproj/Localizable.strings
index 3f59262d71..039ef4c4b1 100644
--- a/platform/ios/resources/Base.lproj/Localizable.strings
+++ b/platform/ios/resources/Base.lproj/Localizable.strings
@@ -34,6 +34,9 @@
 /* Accessibility label */
 "INFO_A11Y_LABEL" = "About this map";
 
+/* List separator */
+"LIST_SEPARATOR" = ", ";
+
 /* User-friendly error description */
 "LOAD_MAP_FAILED_DESC" = "The map failed to load because an unknown error occurred.";
 
@@ -46,12 +49,30 @@
 /* Accessibility label */
 "MAP_A11Y_LABEL" = "Map";
 
-/* Map accessibility value */
-"MAP_A11Y_VALUE" = "Zoom %1$dx\n%2$ld annotation(s) visible";
+/* Map accessibility value; {number of visible annotations} */
+"MAP_A11Y_VALUE_ANNOTATIONS" = "%ld annotation(s) visible.";
+
+/* Map accessibility value; {list of visible places} */
+"MAP_A11Y_VALUE_PLACES" = "Places visible: %@.";
+
+/* Map accessibility value; {number of visible roads} */
+"MAP_A11Y_VALUE_ROADS" = "%ld road(s) visible.";
+
+/* Map accessibility value; {zoom level} */
+"MAP_A11Y_VALUE_ZOOM" = "Zoom %dx.";
 
 /* User-friendly error description */
 "PARSE_STYLE_FAILED_DESC" = "The map failed to load because the style is corrupted.";
 
+/* Accessibility value indicating that a road is a divided road (dual carriageway) */
+"ROAD_DIVIDED_A11Y_VALUE" = "Divided road";
+
+/* Accessibility value indicating that a road is a one-way road */
+"ROAD_ONEWAY_A11Y_VALUE" = "One way";
+
+/* String format for accessibility value for road feature; {route number} */
+"ROAD_REF_A11Y_FMT" = "Route %@";
+
 /* Action sheet title */
 "SDK_NAME" = "Mapbox iOS SDK";
 
diff --git a/platform/ios/resources/en.lproj/Localizable.stringsdict b/platform/ios/resources/en.lproj/Localizable.stringsdict
index e849318fe5..435b7bdfe8 100644
--- a/platform/ios/resources/en.lproj/Localizable.stringsdict
+++ b/platform/ios/resources/en.lproj/Localizable.stringsdict
@@ -2,22 +2,26 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>MAP_A11Y_VALUE</key>
+	<key>MAP_A11Y_VALUE_ANNOTATIONS</key>
 	<dict>
 		<key>NSStringLocalizedFormatKey</key>
-		<string>%#@level@
-%#@count@</string>
-		<key>level</key>
+		<string>%#@count@</string>
+		<key>count</key>
 		<dict>
 			<key>NSStringFormatSpecTypeKey</key>
 			<string>NSStringPluralRuleType</string>
 			<key>NSStringFormatValueTypeKey</key>
-			<string>d</string>
+			<string>ld</string>
 			<key>one</key>
-			<string>Zoom %dx</string>
+			<string>%d annotation visible</string>
 			<key>other</key>
-			<string>Zoom %dx</string>
+			<string>%d annotations visible</string>
 		</dict>
+	</dict>
+	<key>MAP_A11Y_VALUE_ROADS</key>
+	<dict>
+		<key>NSStringLocalizedFormatKey</key>
+		<string>%#@count@</string>
 		<key>count</key>
 		<dict>
 			<key>NSStringFormatSpecTypeKey</key>
@@ -25,9 +29,25 @@
 			<key>NSStringFormatValueTypeKey</key>
 			<string>ld</string>
 			<key>one</key>
-			<string>%d annotation visible</string>
+			<string>%d road visible</string>
 			<key>other</key>
-			<string>%d annotations visible</string>
+			<string>%d roads visible</string>
+		</dict>
+	</dict>
+	<key>MAP_A11Y_VALUE_ZOOM</key>
+	<dict>
+		<key>NSStringLocalizedFormatKey</key>
+		<string>%#@level@</string>
+		<key>level</key>
+		<dict>
+			<key>NSStringFormatSpecTypeKey</key>
+			<string>NSStringPluralRuleType</string>
+			<key>NSStringFormatValueTypeKey</key>
+			<string>d</string>
+			<key>one</key>
+			<string>Zoom %dx</string>
+			<key>other</key>
+			<string>Zoom %dx</string>
 		</dict>
 	</dict>
 </dict>
diff --git a/platform/ios/src/MGLMapAccessibilityElement.h b/platform/ios/src/MGLMapAccessibilityElement.h
new file mode 100644
index 0000000000..952f6cbf2f
--- /dev/null
+++ b/platform/ios/src/MGLMapAccessibilityElement.h
@@ -0,0 +1,54 @@
+#import <UIKit/UIKit.h>
+
+#import "MGLFoundation.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol MGLFeature;
+
+/// Unique identifier representing a single annotation in mbgl.
+typedef uint32_t MGLAnnotationTag;
+
+/** An accessibility element representing something that appears on the map. */
+MGL_EXPORT
+@interface MGLMapAccessibilityElement : UIAccessibilityElement
+
+@end
+
+/** An accessibility element representing a map annotation. */
+@interface MGLAnnotationAccessibilityElement : MGLMapAccessibilityElement
+
+/** The tag of the annotation represented by this element. */
+@property (nonatomic) MGLAnnotationTag tag;
+
+- (instancetype)initWithAccessibilityContainer:(id)container tag:(MGLAnnotationTag)identifier NS_DESIGNATED_INITIALIZER;
+
+@end
+
+/** An accessibility element representing a map feature. */
+MGL_EXPORT
+@interface MGLFeatureAccessibilityElement : MGLMapAccessibilityElement
+
+/** The feature represented by this element. */
+@property (nonatomic, strong) id <MGLFeature> feature;
+
+- (instancetype)initWithAccessibilityContainer:(id)container feature:(id <MGLFeature>)feature NS_DESIGNATED_INITIALIZER;
+
+@end
+
+/** An accessibility element representing a place feature. */
+MGL_EXPORT
+@interface MGLPlaceFeatureAccessibilityElement : MGLFeatureAccessibilityElement
+@end
+
+/** An accessibility element representing a road feature. */
+MGL_EXPORT
+@interface MGLRoadFeatureAccessibilityElement : MGLFeatureAccessibilityElement
+@end
+
+/** An accessibility element representing the MGLMapView at large. */
+MGL_EXPORT
+@interface MGLMapViewProxyAccessibilityElement : UIAccessibilityElement
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/platform/ios/src/MGLMapAccessibilityElement.mm b/platform/ios/src/MGLMapAccessibilityElement.mm
new file mode 100644
index 0000000000..4e5f165fbf
--- /dev/null
+++ b/platform/ios/src/MGLMapAccessibilityElement.mm
@@ -0,0 +1,199 @@
+#import "MGLMapAccessibilityElement.h"
+#import "MGLDistanceFormatter.h"
+#import "MGLCompassDirectionFormatter.h"
+#import "MGLFeature.h"
+#import "MGLVectorSource+MGLAdditions.h"
+
+#import "NSBundle+MGLAdditions.h"
+#import "MGLGeometry_Private.h"
+
+@implementation MGLMapAccessibilityElement
+
+- (UIAccessibilityTraits)accessibilityTraits {
+    return super.accessibilityTraits | UIAccessibilityTraitAdjustable;
+}
+
+- (void)accessibilityIncrement {
+    [self.accessibilityContainer accessibilityIncrement];
+}
+
+- (void)accessibilityDecrement {
+    [self.accessibilityContainer accessibilityDecrement];
+}
+
+@end
+
+@implementation MGLAnnotationAccessibilityElement
+
+- (instancetype)initWithAccessibilityContainer:(id)container tag:(MGLAnnotationTag)tag {
+    if (self = [super initWithAccessibilityContainer:container]) {
+        _tag = tag;
+        self.accessibilityHint = NSLocalizedStringWithDefaultValue(@"ANNOTATION_A11Y_HINT", nil, nil, @"Shows more info", @"Accessibility hint");
+    }
+    return self;
+}
+
+- (UIAccessibilityTraits)accessibilityTraits {
+    return super.accessibilityTraits | UIAccessibilityTraitButton;
+}
+
+@end
+
+@implementation MGLFeatureAccessibilityElement
+
+- (instancetype)initWithAccessibilityContainer:(id)container feature:(id<MGLFeature>)feature {
+    if (self = [super initWithAccessibilityContainer:container]) {
+        _feature = feature;
+        
+        NSString *languageCode = [MGLVectorSource preferredMapboxStreetsLanguage];
+        NSString *nameAttribute = [NSString stringWithFormat:@"name_%@", languageCode];
+        NSString *name = [feature attributeForKey:nameAttribute];
+        
+        // If a feature hasn’t been translated into the preferred language, it
+        // may be in the local language, which may be written in another script.
+        // Romanize it.
+        NSLocale *locale = [NSLocale localeWithLocaleIdentifier:languageCode];
+        NSOrthography *orthography;
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability-new"
+        if ([NSOrthography respondsToSelector:@selector(defaultOrthographyForLanguage:)]) {
+            orthography = [NSOrthography defaultOrthographyForLanguage:locale.localeIdentifier];
+        }
+#pragma clang diagnostic pop
+#endif
+        if ([orthography.dominantScript isEqualToString:@"Latn"]) {
+            name = [name stringByApplyingTransform:NSStringTransformToLatin reverse:NO];
+        }
+        
+        self.accessibilityLabel = name;
+    }
+    return self;
+}
+
+- (UIAccessibilityTraits)accessibilityTraits {
+    return super.accessibilityTraits | UIAccessibilityTraitStaticText;
+}
+
+@end
+
+@implementation MGLPlaceFeatureAccessibilityElement
+
+- (instancetype)initWithAccessibilityContainer:(id)container feature:(id<MGLFeature>)feature {
+    if (self = [super initWithAccessibilityContainer:container feature:feature]) {
+        NSDictionary *attributes = feature.attributes;
+        NSMutableArray *facts = [NSMutableArray array];
+        
+        // Announce the kind of place or POI.
+        if (attributes[@"type"]) {
+            // FIXME: Unfortunately, these types aren’t a closed set that can be
+            // localized, since they’re based on OpenStreetMap tags.
+            NSString *type = [attributes[@"type"] stringByReplacingOccurrencesOfString:@"_"
+                                                                            withString:@" "];
+            [facts addObject:type];
+        }
+        // Announce the kind of airport, rail station, or mountain based on its
+        // Maki image name.
+        else if (attributes[@"maki"]) {
+            // TODO: Localize Maki image names.
+            [facts addObject:attributes[@"maki"]];
+        }
+        
+        // Announce the peak’s elevation in the preferred units.
+        if (attributes[@"elevation_m"] ?: attributes[@"elevation_ft"]) {
+            NSLengthFormatter *formatter = [[NSLengthFormatter alloc] init];
+            formatter.unitStyle = NSFormattingUnitStyleLong;
+            
+            NSNumber *elevationValue;
+            NSLengthFormatterUnit unit;
+            BOOL usesMetricSystem = ![[formatter.numberFormatter.locale objectForKey:NSLocaleMeasurementSystem]
+                                      isEqualToString:@"U.S."];
+            if (usesMetricSystem) {
+                elevationValue = attributes[@"elevation_m"];
+                unit = NSLengthFormatterUnitMeter;
+            } else {
+                elevationValue = attributes[@"elevation_ft"];
+                unit = NSLengthFormatterUnitFoot;
+            }
+            [facts addObject:[formatter stringFromValue:elevationValue.doubleValue unit:unit]];
+        }
+        
+        if (facts.count) {
+            NSString *separator = NSLocalizedStringWithDefaultValue(@"LIST_SEPARATOR", nil, nil, @", ", @"List separator");
+            self.accessibilityValue = [facts componentsJoinedByString:separator];
+        }
+    }
+    return self;
+}
+
+@end
+
+@implementation MGLRoadFeatureAccessibilityElement
+
+- (instancetype)initWithAccessibilityContainer:(id)container feature:(id<MGLFeature>)feature {
+    if (self = [super initWithAccessibilityContainer:container feature:feature]) {
+        NSDictionary *attributes = feature.attributes;
+        NSMutableArray *facts = [NSMutableArray array];
+        
+        // Announce the route number.
+        if (attributes[@"ref"]) {
+            // TODO: Decorate the route number with the network name based on the shield attribute.
+            NSString *ref = [NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"ROAD_REF_A11Y_FMT", nil, nil, @"Route %@", @"String format for accessibility value for road feature; {route number}"), attributes[@"ref"]];
+            [facts addObject:ref];
+        }
+        
+        // Announce whether the road is a one-way road.
+        if ([attributes[@"oneway"] isEqualToString:@"true"]) {
+            [facts addObject:NSLocalizedStringWithDefaultValue(@"ROAD_ONEWAY_A11Y_VALUE", nil, nil, @"One way", @"Accessibility value indicating that a road is a one-way road")];
+        }
+        
+        // Announce whether the road is a divided road.
+        MGLPolyline *polyline;
+        if ([feature isKindOfClass:[MGLMultiPolylineFeature class]]) {
+            [facts addObject:NSLocalizedStringWithDefaultValue(@"ROAD_DIVIDED_A11Y_VALUE", nil, nil, @"Divided road", @"Accessibility value indicating that a road is a divided road (dual carriageway)")];
+            polyline = [(MGLMultiPolylineFeature *)feature polylines].firstObject;
+        }
+        
+        // Announce the road’s general direction.
+        if ([feature isKindOfClass:[MGLPolylineFeature class]]) {
+            polyline = (MGLPolylineFeature *)feature;
+        }
+        if (polyline) {
+            NSUInteger pointCount = polyline.pointCount;
+            if (pointCount) {
+                CLLocationCoordinate2D *coordinates = polyline.coordinates;
+                CLLocationDirection startDirection = MGLDirectionBetweenCoordinates(coordinates[pointCount - 1], coordinates[0]);
+                CLLocationDirection endDirection = MGLDirectionBetweenCoordinates(coordinates[0], coordinates[pointCount - 1]);
+                
+                MGLCompassDirectionFormatter *formatter = [[MGLCompassDirectionFormatter alloc] init];
+                formatter.unitStyle = NSFormattingUnitStyleLong;
+                
+                NSString *startDirectionString = [formatter stringFromDirection:startDirection];
+                NSString *endDirectionString = [formatter stringFromDirection:endDirection];
+                NSString *directionString = [NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"ROAD_DIRECTION_A11Y_FMT", nil, nil, @"%@ to %@", @"String format for accessibility value for road feature; {starting compass direction}, {ending compass direction}"), startDirectionString, endDirectionString];
+                [facts addObject:directionString];
+            }
+        }
+        
+        if (facts.count) {
+            NSString *separator = NSLocalizedStringWithDefaultValue(@"LIST_SEPARATOR", nil, nil, @", ", @"List separator");
+            self.accessibilityValue = [facts componentsJoinedByString:separator];
+        }
+    }
+    return self;
+}
+
+@end
+
+@implementation MGLMapViewProxyAccessibilityElement
+
+- (instancetype)initWithAccessibilityContainer:(id)container {
+    if (self = [super initWithAccessibilityContainer:container]) {
+        self.accessibilityTraits = UIAccessibilityTraitButton;
+        self.accessibilityLabel = [self.accessibilityContainer accessibilityLabel];
+        self.accessibilityHint = NSLocalizedStringWithDefaultValue(@"CLOSE_CALLOUT_A11Y_HINT", nil, nil, @"Returns to the map", @"Accessibility hint for closing the selected annotation’s callout view and returning to the map");
+    }
+    return self;
+}
+
+@end
diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm
index ed51754b0a..c960c60c78 100644
--- a/platform/ios/src/MGLMapView.mm
+++ b/platform/ios/src/MGLMapView.mm
@@ -43,6 +43,7 @@
 #import "MGLFoundation_Private.h"
 #import "MGLRendererFrontend.h"
 
+#import "MGLVectorSource+MGLAdditions.h"
 #import "NSBundle+MGLAdditions.h"
 #import "NSDate+MGLAdditions.h"
 #import "NSException+MGLAdditions.h"
@@ -68,6 +69,7 @@
 #import "MGLAnnotationContainerView.h"
 #import "MGLAnnotationContainerView_Private.h"
 #import "MGLAttributionInfo_Private.h"
+#import "MGLMapAccessibilityElement.h"
 
 #include <algorithm>
 #include <cstdlib>
@@ -139,9 +141,6 @@ const CGFloat MGLAnnotationImagePaddingForCallout = 1;
 
 const CGSize MGLAnnotationAccessibilityElementMinimumSize = CGSizeMake(10, 10);
 
-/// Unique identifier representing a single annotation in mbgl.
-typedef uint32_t MGLAnnotationTag;
-
 /// An indication that the requested annotation was not found or is nonexistent.
 enum { MGLAnnotationTagNotFound = UINT32_MAX };
 
@@ -164,38 +163,6 @@ mbgl::util::UnitBezier MGLUnitBezierForMediaTimingFunction(CAMediaTimingFunction
     return { p1[0], p1[1], p2[0], p2[1] };
 }
 
-@interface MGLAnnotationAccessibilityElement : UIAccessibilityElement
-
-@property (nonatomic) MGLAnnotationTag tag;
-
-- (instancetype)initWithAccessibilityContainer:(id)container tag:(MGLAnnotationTag)identifier NS_DESIGNATED_INITIALIZER;
-
-@end
-
-@implementation MGLAnnotationAccessibilityElement
-
-- (instancetype)initWithAccessibilityContainer:(id)container tag:(MGLAnnotationTag)tag
-{
-    if (self = [super initWithAccessibilityContainer:container])
-    {
-        _tag = tag;
-        self.accessibilityTraits = UIAccessibilityTraitButton | UIAccessibilityTraitAdjustable;
-    }
-    return self;
-}
-
-- (void)accessibilityIncrement
-{
-    [self.accessibilityContainer accessibilityIncrement];
-}
-
-- (void)accessibilityDecrement
-{
-    [self.accessibilityContainer accessibilityDecrement];
-}
-
-@end
-
 /// Lightweight container for metadata about an annotation, including the annotation itself.
 class MGLAnnotationContext {
 public:
@@ -207,26 +174,6 @@ public:
     NSString *viewReuseIdentifier;
 };
 
-/** An accessibility element representing the MGLMapView at large. */
-@interface MGLMapViewProxyAccessibilityElement : UIAccessibilityElement
-
-@end
-
-@implementation MGLMapViewProxyAccessibilityElement
-
-- (instancetype)initWithAccessibilityContainer:(id)container
-{
-    if (self = [super initWithAccessibilityContainer:container])
-    {
-        self.accessibilityTraits = UIAccessibilityTraitButton;
-        self.accessibilityLabel = [self.accessibilityContainer accessibilityLabel];
-        self.accessibilityHint = NSLocalizedStringWithDefaultValue(@"CLOSE_CALLOUT_A11Y_HINT", nil, nil, @"Returns to the map", @"Accessibility hint for closing the selected annotation’s callout view and returning to the map");
-    }
-    return self;
-}
-
-@end
-
 #pragma mark - Private -
 
 @interface MGLMapView () <UIGestureRecognizerDelegate,
@@ -327,6 +274,10 @@ public:
     BOOL _delegateHasLineWidthsForShapeAnnotations;
 
     MGLCompassDirectionFormatter *_accessibilityCompassFormatter;
+    NS_ARRAY_OF(id <MGLFeature>) *_visiblePlaceFeatures;
+    NS_ARRAY_OF(id <MGLFeature>) *_visibleRoadFeatures;
+    NS_MUTABLE_SET_OF(MGLFeatureAccessibilityElement *) *_featureAccessibilityElements;
+    BOOL _accessibilityValueAnnouncementIsPending;
 
     MGLReachability *_reachability;
 }
@@ -2355,8 +2306,61 @@ public:
 
 - (NSString *)accessibilityValue
 {
+    NSMutableArray *facts = [NSMutableArray array];
+    
     double zoomLevel = round(self.zoomLevel + 1);
-    return [NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"MAP_A11Y_VALUE", nil, nil, @"Zoom %dx\n%ld annotation(s) visible", @"Map accessibility value"), (int)zoomLevel, (long)self.accessibilityAnnotationCount];
+    [facts addObject:[NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"MAP_A11Y_VALUE_ZOOM", nil, nil, @"Zoom %dx.", @"Map accessibility value; {zoom level}"), (int)zoomLevel]];
+    
+    NSInteger annotationCount = self.accessibilityAnnotationCount;
+    if (annotationCount) {
+        [facts addObject:[NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"MAP_A11Y_VALUE_ANNOTATIONS", nil, nil, @"%ld annotation(s) visible.", @"Map accessibility value; {number of visible annotations}"), (long)self.accessibilityAnnotationCount]];
+    }
+    
+    NSArray *placeFeatures = self.visiblePlaceFeatures;
+    if (placeFeatures.count) {
+        NSMutableArray *placesArray = [NSMutableArray arrayWithCapacity:placeFeatures.count];
+        NSMutableSet *placesSet = [NSMutableSet setWithCapacity:placeFeatures.count];
+        for (id <MGLFeature> placeFeature in placeFeatures.reverseObjectEnumerator) {
+            NSString *name = [placeFeature attributeForKey:@"name"];
+            if (![placesSet containsObject:name]) {
+                [placesArray addObject:name];
+                [placesSet addObject:name];
+            }
+            if (placesArray.count >= 3) {
+                break;
+            }
+        }
+        NSString *placesString = [placesArray componentsJoinedByString:NSLocalizedStringWithDefaultValue(@"LIST_SEPARATOR", nil, nil, @", ", @"List separator")];
+        [facts addObject:[NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"MAP_A11Y_VALUE_PLACES", nil, nil, @"Places visible: %@.", @"Map accessibility value; {list of visible places}"), placesString]];
+    }
+    
+    NSArray *roadFeatures = self.visibleRoadFeatures;
+    if (roadFeatures.count) {
+        [facts addObject:[NSString stringWithFormat:NSLocalizedStringWithDefaultValue(@"MAP_A11Y_VALUE_ROADS", nil, nil, @"%ld road(s) visible.", @"Map accessibility value; {number of visible roads}"), roadFeatures.count]];
+    }
+    
+    NSString *value = [facts componentsJoinedByString:@" "];
+    return value;
+}
+
+- (NS_ARRAY_OF(id <MGLFeature>) *)visiblePlaceFeatures
+{
+    if (!_visiblePlaceFeatures)
+    {
+        NSArray *placeStyleLayerIdentifiers = [self.style.placeStyleLayers valueForKey:@"identifier"];
+        _visiblePlaceFeatures = [self visibleFeaturesInRect:self.bounds inStyleLayersWithIdentifiers:[NSSet setWithArray:placeStyleLayerIdentifiers]];
+    }
+    return _visiblePlaceFeatures;
+}
+
+- (NS_ARRAY_OF(id <MGLFeature>) *)visibleRoadFeatures
+{
+    if (!_visibleRoadFeatures)
+    {
+        NSArray *roadStyleLayerIdentifiers = [self.style.roadStyleLayers valueForKey:@"identifier"];
+        _visibleRoadFeatures = [self visibleFeaturesInRect:self.bounds inStyleLayersWithIdentifiers:[NSSet setWithArray:roadStyleLayerIdentifiers]];
+    }
+    return _visibleRoadFeatures;
 }
 
 - (CGRect)accessibilityFrame
@@ -2390,14 +2394,9 @@ public:
 {
     if (self.calloutViewForSelectedAnnotation)
     {
-        return 2 /* selectedAnnotationCalloutView, mapViewProxyAccessibilityElement */;
+        return 2 /* calloutViewForSelectedAnnotation, mapViewProxyAccessibilityElement */;
     }
-    NSInteger count = self.accessibilityAnnotationCount + 2 /* compass, attributionButton */;
-    if (self.userLocationAnnotationView)
-    {
-        count++;
-    }
-    return count;
+    return !!self.userLocationAnnotationView + self.accessibilityAnnotationCount + self.visiblePlaceFeatures.count + self.visibleRoadFeatures.count + 2 /* compass, attributionButton */;
 }
 
 - (NSInteger)accessibilityAnnotationCount
@@ -2422,67 +2421,123 @@ public:
         }
         return nil;
     }
-    std::vector<MGLAnnotationTag> visibleAnnotations = [self annotationTagsInRect:self.bounds];
-
-    // Ornaments
-    if (index == 0)
+    
+    // Compass
+    NSUInteger compassIndex = 0;
+    if (index == compassIndex)
     {
         return self.compassView;
     }
-    if ( ! self.userLocationAnnotationView)
-    {
-        index++;
-    }
-    else if (index == 1)
+    
+    // User location annotation
+    NSRange userLocationAnnotationRange = NSMakeRange(compassIndex + 1, !!self.userLocationAnnotationView);
+    if (NSLocationInRange(index, userLocationAnnotationRange))
     {
         return self.userLocationAnnotationView;
     }
-    if (index > 0 && (NSUInteger)index == visibleAnnotations.size() + 2 /* compass, userLocationAnnotationView */)
-    {
-        return self.attributionButton;
-    }
-
-    std::sort(visibleAnnotations.begin(), visibleAnnotations.end());
+    
     CGPoint centerPoint = self.contentCenter;
     if (self.userTrackingMode != MGLUserTrackingModeNone)
     {
         centerPoint = self.userLocationAnnotationViewCenter;
     }
-    CLLocationCoordinate2D currentCoordinate = [self convertPoint:centerPoint toCoordinateFromView:self];
-    std::sort(visibleAnnotations.begin(), visibleAnnotations.end(), [&](const MGLAnnotationTag tagA, const MGLAnnotationTag tagB) {
-        CLLocationCoordinate2D coordinateA = [[self annotationWithTag:tagA] coordinate];
-        CLLocationCoordinate2D coordinateB = [[self annotationWithTag:tagB] coordinate];
-        CLLocationDegrees deltaA = hypot(coordinateA.latitude - currentCoordinate.latitude,
-                                         coordinateA.longitude - currentCoordinate.longitude);
-        CLLocationDegrees deltaB = hypot(coordinateB.latitude - currentCoordinate.latitude,
-                                         coordinateB.longitude - currentCoordinate.longitude);
-        return deltaA < deltaB;
-    });
-
-    NSUInteger annotationIndex = MGLAnnotationTagNotFound;
-    if (index >= 0 && (NSUInteger)(index - 2) < visibleAnnotations.size())
+    
+    // Visible annotations
+    std::vector<MGLAnnotationTag> visibleAnnotations = [self annotationTagsInRect:self.bounds];
+    NSRange visibleAnnotationRange = NSMakeRange(NSMaxRange(userLocationAnnotationRange), visibleAnnotations.size());
+    if (NSLocationInRange(index, visibleAnnotationRange))
+    {
+        std::sort(visibleAnnotations.begin(), visibleAnnotations.end());
+        std::sort(visibleAnnotations.begin(), visibleAnnotations.end(), [&](const MGLAnnotationTag tagA, const MGLAnnotationTag tagB) {
+            CLLocationCoordinate2D coordinateA = [[self annotationWithTag:tagA] coordinate];
+            CLLocationCoordinate2D coordinateB = [[self annotationWithTag:tagB] coordinate];
+            CGPoint pointA = [self convertCoordinate:coordinateA toPointToView:self];
+            CGPoint pointB = [self convertCoordinate:coordinateB toPointToView:self];
+            CGFloat deltaA = hypot(pointA.x - centerPoint.x, pointA.y - centerPoint.y);
+            CGFloat deltaB = hypot(pointB.x - centerPoint.x, pointB.y - centerPoint.y);
+            return deltaA < deltaB;
+        });
+        
+        NSUInteger annotationIndex = index - visibleAnnotationRange.location;
+        MGLAnnotationTag annotationTag = visibleAnnotations[annotationIndex];
+        NSAssert(annotationTag != MGLAnnotationTagNotFound, @"Can’t get accessibility element for nonexistent or invisible annotation at index %li.", (long)index);
+        return [self accessibilityElementForAnnotationWithTag:annotationTag];
+    }
+    
+    // Visible place features
+    NSArray *visiblePlaceFeatures = self.visiblePlaceFeatures;
+    NSRange visiblePlaceFeatureRange = NSMakeRange(NSMaxRange(visibleAnnotationRange), visiblePlaceFeatures.count);
+    if (NSLocationInRange(index, visiblePlaceFeatureRange))
+    {
+        visiblePlaceFeatures = [visiblePlaceFeatures sortedArrayUsingComparator:^NSComparisonResult(id <MGLFeature> _Nonnull featureA, id <MGLFeature> _Nonnull featureB) {
+            CGPoint pointA = [self convertCoordinate:featureA.coordinate toPointToView:self];
+            CGPoint pointB = [self convertCoordinate:featureB.coordinate toPointToView:self];
+            CGFloat deltaA = hypot(pointA.x - centerPoint.x, pointA.y - centerPoint.y);
+            CGFloat deltaB = hypot(pointB.x - centerPoint.x, pointB.y - centerPoint.y);
+            return [@(deltaA) compare:@(deltaB)];
+        }];
+        
+        id <MGLFeature> feature = visiblePlaceFeatures[index - visiblePlaceFeatureRange.location];
+        return [self accessibilityElementForPlaceFeature:feature];
+    }
+    
+    // Visible road features
+    NSArray *visibleRoadFeatures = self.visibleRoadFeatures;
+    NSRange visibleRoadFeatureRange = NSMakeRange(NSMaxRange(visiblePlaceFeatureRange), visibleRoadFeatures.count);
+    if (NSLocationInRange(index, visibleRoadFeatureRange))
+    {
+        visibleRoadFeatures = [visibleRoadFeatures sortedArrayUsingComparator:^NSComparisonResult(id <MGLFeature> _Nonnull featureA, id <MGLFeature> _Nonnull featureB) {
+            CGPoint pointA = [self convertCoordinate:featureA.coordinate toPointToView:self];
+            CGPoint pointB = [self convertCoordinate:featureB.coordinate toPointToView:self];
+            CGFloat deltaA = hypot(pointA.x - centerPoint.x, pointA.y - centerPoint.y);
+            CGFloat deltaB = hypot(pointB.x - centerPoint.x, pointB.y - centerPoint.y);
+            return [@(deltaA) compare:@(deltaB)];
+        }];
+        
+        id <MGLFeature> feature = visibleRoadFeatures[index - visibleRoadFeatureRange.location];
+        return [self accessibilityElementForRoadFeature:feature];
+    }
+    
+    // Attribution button
+    NSUInteger attributionButtonIndex = NSMaxRange(visibleRoadFeatureRange);
+    if (index == attributionButtonIndex)
     {
-        annotationIndex = index - 2 /* compass, userLocationAnnotationView */;
+        return self.attributionButton;
     }
-    MGLAnnotationTag annotationTag = visibleAnnotations[annotationIndex];
-    NSAssert(annotationTag != MGLAnnotationTagNotFound, @"Can’t get accessibility element for nonexistent or invisible annotation at index %li.", (long)index);
+    
+    NSAssert(NO, @"Index %ld not in recognized accessibility element ranges. "
+             @"User location annotation range: %@; visible annotation range: %@; "
+             @"visible place feature range: %@; visible road feature range: %@.",
+             (long)index, NSStringFromRange(userLocationAnnotationRange),
+             NSStringFromRange(visibleAnnotationRange), NSStringFromRange(visiblePlaceFeatureRange),
+             NSStringFromRange(visibleRoadFeatureRange));
+    return nil;
+}
+
+/**
+ Returns an accessibility element corresponding to a visible annotation with the given tag.
+ 
+ @param annotationTag Tag of the annotation represented by the accessibility element to return.
+ */
+- (id)accessibilityElementForAnnotationWithTag:(MGLAnnotationTag)annotationTag
+{
     NSAssert(_annotationContextsByAnnotationTag.count(annotationTag), @"Missing annotation for tag %u.", annotationTag);
     MGLAnnotationContext &annotationContext = _annotationContextsByAnnotationTag.at(annotationTag);
     id <MGLAnnotation> annotation = annotationContext.annotation;
-
+    
     // Let the annotation view serve as its own accessibility element.
     MGLAnnotationView *annotationView = annotationContext.annotationView;
     if (annotationView && annotationView.superview)
     {
         return annotationView;
     }
-
+    
     // Lazily create an accessibility element for the found annotation.
     if ( ! annotationContext.accessibilityElement)
     {
         annotationContext.accessibilityElement = [[MGLAnnotationAccessibilityElement alloc] initWithAccessibilityContainer:self tag:annotationTag];
     }
-
+    
     // Update the accessibility element.
     MGLAnnotationImage *annotationImage = [self imageOfAnnotationWithTag:annotationTag];
     CGRect annotationFrame = [self frameOfImage:annotationImage.image centeredAtCoordinate:annotation.coordinate];
@@ -2493,8 +2548,7 @@ public:
     annotationFrame = CGRectUnion(annotationFrame, minimumFrame);
     CGRect screenRect = UIAccessibilityConvertFrameToScreenCoordinates(annotationFrame, self);
     annotationContext.accessibilityElement.accessibilityFrame = screenRect;
-    annotationContext.accessibilityElement.accessibilityHint = NSLocalizedStringWithDefaultValue(@"ANNOTATION_A11Y_HINT", nil, nil, @"Shows more info", @"Accessibility hint");
-
+    
     if ([annotation respondsToSelector:@selector(title)])
     {
         annotationContext.accessibilityElement.accessibilityLabel = annotation.title;
@@ -2503,10 +2557,114 @@ public:
     {
         annotationContext.accessibilityElement.accessibilityValue = annotation.subtitle;
     }
-
+    
     return annotationContext.accessibilityElement;
 }
 
+/**
+ Returns an accessibility element corresponding to the given place feature.
+ 
+ @param feature The place feature represented by the accessibility element.
+ */
+- (id)accessibilityElementForPlaceFeature:(id <MGLFeature>)feature
+{
+    if (!_featureAccessibilityElements)
+    {
+        _featureAccessibilityElements = [NSMutableSet set];
+    }
+    
+    MGLFeatureAccessibilityElement *element = [_featureAccessibilityElements objectsPassingTest:^BOOL(MGLFeatureAccessibilityElement * _Nonnull element, BOOL * _Nonnull stop) {
+        return element.feature.identifier && ![element.feature.identifier isEqual:@0] && [element.feature.identifier isEqual:feature.identifier];
+    }].anyObject;
+    if (!element)
+    {
+        element = [[MGLPlaceFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    }
+    CGPoint center = [self convertCoordinate:feature.coordinate toPointToView:self];
+    CGRect annotationFrame = CGRectInset({center, CGSizeZero}, -MGLAnnotationAccessibilityElementMinimumSize.width / 2, -MGLAnnotationAccessibilityElementMinimumSize.width / 2);
+    CGRect screenRect = UIAccessibilityConvertFrameToScreenCoordinates(annotationFrame, self);
+    element.accessibilityFrame = screenRect;
+    
+    [_featureAccessibilityElements addObject:element];
+    
+    return element;
+}
+
+/**
+ Returns an accessibility element corresponding to the given road feature.
+ 
+ @param feature The road feature represented by the accessibility element.
+ */
+- (id)accessibilityElementForRoadFeature:(id <MGLFeature>)feature
+{
+    if (!_featureAccessibilityElements)
+    {
+        _featureAccessibilityElements = [NSMutableSet set];
+    }
+    
+    MGLFeatureAccessibilityElement *element = [_featureAccessibilityElements objectsPassingTest:^BOOL(MGLFeatureAccessibilityElement * _Nonnull element, BOOL * _Nonnull stop) {
+        return element.feature.identifier && ![element.feature.identifier isEqual:@0] && [element.feature.identifier isEqual:feature.identifier];
+    }].anyObject;
+    if (!element)
+    {
+        element = [[MGLRoadFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    }
+    
+    UIBezierPath *path;
+    if ([feature isKindOfClass:[MGLPointFeature class]])
+    {
+        CGPoint center = [self convertCoordinate:feature.coordinate toPointToView:self];
+        CGRect annotationFrame = CGRectInset({center, CGSizeZero}, -MGLAnnotationAccessibilityElementMinimumSize.width / 2, -MGLAnnotationAccessibilityElementMinimumSize.width / 2);
+        CGRect screenRect = UIAccessibilityConvertFrameToScreenCoordinates(annotationFrame, self);
+        element.accessibilityFrame = screenRect;
+    }
+    else if ([feature isKindOfClass:[MGLPolylineFeature class]])
+    {
+        path = [self pathOfPolyline:(MGLPolyline *)feature];
+    }
+    else if ([feature isKindOfClass:[MGLMultiPolylineFeature class]])
+    {
+        path = [UIBezierPath bezierPath];
+        for (MGLPolyline *polyline in [(MGLMultiPolylineFeature *)feature polylines])
+        {
+            [path appendPath:[self pathOfPolyline:polyline]];
+        }
+    }
+    
+    if (path)
+    {
+        CGPathRef strokedCGPath = CGPathCreateCopyByStrokingPath(path.CGPath, NULL, MGLAnnotationAccessibilityElementMinimumSize.width, kCGLineCapButt, kCGLineJoinMiter, 0);
+        UIBezierPath *strokedPath = [UIBezierPath bezierPathWithCGPath:strokedCGPath];
+        CGPathRelease(strokedCGPath);
+        UIBezierPath *screenPath = UIAccessibilityConvertPathToScreenCoordinates(strokedPath, self);
+        element.accessibilityPath = screenPath;
+    }
+    
+    [_featureAccessibilityElements addObject:element];
+    
+    return element;
+}
+
+- (UIBezierPath *)pathOfPolyline:(MGLPolyline *)polyline
+{
+    CLLocationCoordinate2D *coordinates = polyline.coordinates;
+    NSUInteger pointCount = polyline.pointCount;
+    UIBezierPath *path = [UIBezierPath bezierPath];
+    for (NSUInteger i = 0; i < pointCount; i++)
+    {
+        CGPoint point = [self convertCoordinate:coordinates[i] toPointToView:self];
+        if (i)
+        {
+            [path addLineToPoint:point];
+        }
+        else
+        {
+            [path moveToPoint:point];
+        }
+    }
+    return path;
+}
+
 - (NSInteger)indexOfAccessibilityElement:(id)element
 {
     if (self.calloutViewForSelectedAnnotation)
@@ -2514,17 +2672,30 @@ public:
         return [@[self.calloutViewForSelectedAnnotation, self.mapViewProxyAccessibilityElement]
                 indexOfObject:element];
     }
+    
+    // Compass
+    NSUInteger compassIndex = 0;
     if (element == self.compassView)
     {
-        return 0;
+        return compassIndex;
     }
+    
+    // User location annotation
+    NSRange userLocationAnnotationRange = NSMakeRange(compassIndex + 1, !!self.userLocationAnnotationView);
     if (element == self.userLocationAnnotationView)
     {
-        return 1;
+        return userLocationAnnotationRange.location;
     }
-
+    
+    CGPoint centerPoint = self.contentCenter;
+    if (self.userTrackingMode != MGLUserTrackingModeNone)
+    {
+        centerPoint = self.userLocationAnnotationViewCenter;
+    }
+    
+    // Visible annotations
     std::vector<MGLAnnotationTag> visibleAnnotations = [self annotationTagsInRect:self.bounds];
-
+    NSRange visibleAnnotationRange = NSMakeRange(NSMaxRange(userLocationAnnotationRange), visibleAnnotations.size());
     MGLAnnotationTag tag = MGLAnnotationTagNotFound;
     if ([element isKindOfClass:[MGLAnnotationView class]])
     {
@@ -2535,22 +2706,92 @@ public:
     {
         tag = [(MGLAnnotationAccessibilityElement *)element tag];
     }
-    else if (element == self.attributionButton)
-    {
-        return !!self.userLocationAnnotationView + visibleAnnotations.size();
+    
+    if (tag != MGLAnnotationTagNotFound)
+    {
+        std::sort(visibleAnnotations.begin(), visibleAnnotations.end());
+        std::sort(visibleAnnotations.begin(), visibleAnnotations.end(), [&](const MGLAnnotationTag tagA, const MGLAnnotationTag tagB) {
+            CLLocationCoordinate2D coordinateA = [[self annotationWithTag:tagA] coordinate];
+            CLLocationCoordinate2D coordinateB = [[self annotationWithTag:tagB] coordinate];
+            CGPoint pointA = [self convertCoordinate:coordinateA toPointToView:self];
+            CGPoint pointB = [self convertCoordinate:coordinateB toPointToView:self];
+            CGFloat deltaA = hypot(pointA.x - centerPoint.x, pointA.y - centerPoint.y);
+            CGFloat deltaB = hypot(pointB.x - centerPoint.x, pointB.y - centerPoint.y);
+            return deltaA < deltaB;
+        });
+        
+        auto foundElement = std::find(visibleAnnotations.begin(), visibleAnnotations.end(), tag);
+        if (foundElement == visibleAnnotations.end())
+        {
+            return NSNotFound;
+        }
+        return visibleAnnotationRange.location + std::distance(visibleAnnotations.begin(), foundElement);
     }
-    else
-    {
-        return NSNotFound;
+    
+    // Visible place features
+    NSArray *visiblePlaceFeatures = self.visiblePlaceFeatures;
+    NSRange visiblePlaceFeatureRange = NSMakeRange(NSMaxRange(visibleAnnotationRange), visiblePlaceFeatures.count);
+    if ([element isKindOfClass:[MGLPlaceFeatureAccessibilityElement class]])
+    {
+        visiblePlaceFeatures = [visiblePlaceFeatures sortedArrayUsingComparator:^NSComparisonResult(id <MGLFeature> _Nonnull featureA, id <MGLFeature> _Nonnull featureB) {
+            CGPoint pointA = [self convertCoordinate:featureA.coordinate toPointToView:self];
+            CGPoint pointB = [self convertCoordinate:featureB.coordinate toPointToView:self];
+            CGFloat deltaA = hypot(pointA.x - centerPoint.x, pointA.y - centerPoint.y);
+            CGFloat deltaB = hypot(pointB.x - centerPoint.x, pointB.y - centerPoint.y);
+            return [@(deltaA) compare:@(deltaB)];
+        }];
+        
+        id <MGLFeature> feature = [(MGLPlaceFeatureAccessibilityElement *)element feature];
+        NSUInteger featureIndex = [visiblePlaceFeatures indexOfObject:feature];
+        if (featureIndex == NSNotFound)
+        {
+            featureIndex = [visiblePlaceFeatures indexOfObjectPassingTest:^BOOL (id <MGLFeature> _Nonnull visibleFeature, NSUInteger idx, BOOL * _Nonnull stop) {
+                return visibleFeature.identifier && ![visibleFeature.identifier isEqual:@0] && [visibleFeature.identifier isEqual:feature.identifier];
+            }];
+        }
+        if (featureIndex == NSNotFound)
+        {
+            return NSNotFound;
+        }
+        return visiblePlaceFeatureRange.location + featureIndex;
     }
-
-    std::sort(visibleAnnotations.begin(), visibleAnnotations.end());
-    auto foundElement = std::find(visibleAnnotations.begin(), visibleAnnotations.end(), tag);
-    if (foundElement == visibleAnnotations.end())
+    
+    // Visible road features
+    NSArray *visibleRoadFeatures = self.visibleRoadFeatures;
+    NSRange visibleRoadFeatureRange = NSMakeRange(NSMaxRange(visiblePlaceFeatureRange), visibleRoadFeatures.count);
+    if ([element isKindOfClass:[MGLRoadFeatureAccessibilityElement class]])
+    {
+        visibleRoadFeatures = [visibleRoadFeatures sortedArrayUsingComparator:^NSComparisonResult(id <MGLFeature> _Nonnull featureA, id <MGLFeature> _Nonnull featureB) {
+            CGPoint pointA = [self convertCoordinate:featureA.coordinate toPointToView:self];
+            CGPoint pointB = [self convertCoordinate:featureB.coordinate toPointToView:self];
+            CGFloat deltaA = hypot(pointA.x - centerPoint.x, pointA.y - centerPoint.y);
+            CGFloat deltaB = hypot(pointB.x - centerPoint.x, pointB.y - centerPoint.y);
+            return [@(deltaA) compare:@(deltaB)];
+        }];
+        
+        id <MGLFeature> feature = [(MGLRoadFeatureAccessibilityElement *)element feature];
+        NSUInteger featureIndex = [visibleRoadFeatures indexOfObject:feature];
+        if (featureIndex == NSNotFound)
+        {
+            featureIndex = [visibleRoadFeatures indexOfObjectPassingTest:^BOOL (id <MGLFeature> _Nonnull visibleFeature, NSUInteger idx, BOOL * _Nonnull stop) {
+                return visibleFeature.identifier && ![visibleFeature.identifier isEqual:@0] && [visibleFeature.identifier isEqual:feature.identifier];
+            }];
+        }
+        if (featureIndex == NSNotFound)
+        {
+            return NSNotFound;
+        }
+        return visibleRoadFeatureRange.location + featureIndex;
+    }
+    
+    // Attribution button
+    NSUInteger attributionButtonIndex = NSMaxRange(visibleRoadFeatureRange);
+    if (element == self.attributionButton)
     {
-        return NSNotFound;
+        return attributionButtonIndex;
     }
-    return !!self.userLocationAnnotationView + std::distance(visibleAnnotations.begin(), foundElement) + 1 /* compass */;
+    
+    return NSNotFound;
 }
 
 - (MGLMapViewProxyAccessibilityElement *)mapViewProxyAccessibilityElement
@@ -2581,10 +2822,11 @@ public:
     {
         centerPoint = self.userLocationAnnotationViewCenter;
     }
-    _mbglMap->setZoom(_mbglMap->getZoom() + log2(scaleFactor), mbgl::ScreenCoordinate { centerPoint.x, centerPoint.y });
+    double newZoom = round(self.zoomLevel) + log2(scaleFactor);
+    _mbglMap->setZoom(newZoom, mbgl::ScreenCoordinate { centerPoint.x, centerPoint.y });
     [self unrotateIfNeededForGesture];
 
-    UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, self.accessibilityValue);
+    _accessibilityValueAnnouncementIsPending = YES;
 }
 
 #pragma mark - Geography -
@@ -5144,12 +5386,26 @@ public:
     {
         if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive)
         {
-            UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, nil);
+            _featureAccessibilityElements = nil;
+            _visiblePlaceFeatures = nil;
+            _visibleRoadFeatures = nil;
+            if (_accessibilityValueAnnouncementIsPending) {
+                _accessibilityValueAnnouncementIsPending = NO;
+                [self performSelector:@selector(announceAccessibilityValue) withObject:nil afterDelay:0.1];
+            } else {
+                UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, nil);
+            }
         }
         [self.delegate mapView:self regionDidChangeAnimated:animated];
     }
 }
 
+- (void)announceAccessibilityValue
+{
+    UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, self.accessibilityValue);
+    UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, nil);
+}
+
 - (void)mapViewWillStartLoadingMap {
     if (!_mbglMap) {
         return;
@@ -5231,6 +5487,8 @@ public:
     if (!_mbglMap) {
         return;
     }
+    
+    UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, nil);
 
     if ([self.delegate respondsToSelector:@selector(mapViewDidFinishRenderingMap:fullyRendered:)])
     {
diff --git a/platform/ios/test/MGLMapAccessibilityElementTests.m b/platform/ios/test/MGLMapAccessibilityElementTests.m
new file mode 100644
index 0000000000..5c79d85de1
--- /dev/null
+++ b/platform/ios/test/MGLMapAccessibilityElementTests.m
@@ -0,0 +1,87 @@
+#import <Mapbox/Mapbox.h>
+#import <XCTest/XCTest.h>
+
+#import "../../ios/src/MGLMapAccessibilityElement.h"
+
+@interface MGLMapAccessibilityElementTests : XCTestCase
+@end
+
+@implementation MGLMapAccessibilityElementTests
+
+- (void)testFeatureLabels {
+    MGLPointFeature *feature = [[MGLPointFeature alloc] init];
+    feature.attributes = @{
+        @"name": @"Local",
+        @"name_en": @"English",
+        @"name_es": @"Spanish",
+        @"name_fr": @"French",
+        @"name_tlh": @"Klingon",
+    };
+    MGLFeatureAccessibilityElement *element = [[MGLFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    XCTAssertEqualObjects(element.accessibilityLabel, @"English", @"Accessibility label should be localized.");
+    
+    feature.attributes = @{
+        @"name": @"Цинциннати",
+        @"name_en": @"Цинциннати",
+    };
+    element = [[MGLFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    XCTAssertEqualObjects(element.accessibilityLabel, @"Cincinnati", @"Accessibility label should be romanized.");
+}
+
+- (void)testPlaceFeatureValues {
+    MGLPointFeature *feature = [[MGLPointFeature alloc] init];
+    feature.attributes = @{
+        @"type": @"village_green",
+    };
+    MGLPlaceFeatureAccessibilityElement *element = [[MGLPlaceFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    XCTAssertEqualObjects(element.accessibilityValue, @"village green");
+    
+    feature = [[MGLPointFeature alloc] init];
+    feature.attributes = @{
+        @"maki": @"cat",
+    };
+    element = [[MGLPlaceFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    XCTAssertEqualObjects(element.accessibilityValue, @"cat");
+    
+    feature = [[MGLPointFeature alloc] init];
+    feature.attributes = @{
+        @"elevation_ft": @31337,
+        @"elevation_m": @1337,
+    };
+    element = [[MGLPlaceFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:feature];
+    XCTAssertEqualObjects(element.accessibilityValue, @"31,337 feet");
+}
+
+- (void)testRoadFeatureValues {
+    CLLocationCoordinate2D coordinates[] = {
+        CLLocationCoordinate2DMake(0, 0),
+        CLLocationCoordinate2DMake(0, 1),
+        CLLocationCoordinate2DMake(1, 2),
+        CLLocationCoordinate2DMake(2, 2),
+    };
+    MGLPolylineFeature *roadFeature = [MGLPolylineFeature polylineWithCoordinates:coordinates count:sizeof(coordinates) / sizeof(coordinates[0])];
+    roadFeature.attributes = @{
+        @"ref": @"42",
+        @"oneway": @"true",
+    };
+    MGLRoadFeatureAccessibilityElement *element = [[MGLRoadFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:roadFeature];
+    XCTAssertEqualObjects(element.accessibilityValue, @"Route 42, One way, southwest to northeast");
+    
+    CLLocationCoordinate2D opposingCoordinates[] = {
+        CLLocationCoordinate2DMake(2, 1),
+        CLLocationCoordinate2DMake(1, 0),
+    };
+    MGLPolylineFeature *opposingRoadFeature = [MGLPolylineFeature polylineWithCoordinates:opposingCoordinates count:sizeof(opposingCoordinates) / sizeof(opposingCoordinates[0])];
+    opposingRoadFeature.attributes = @{
+        @"ref": @"42",
+        @"oneway": @"true",
+    };
+    MGLMultiPolylineFeature *dividedRoadFeature = [MGLMultiPolylineFeature multiPolylineWithPolylines:@[roadFeature, opposingRoadFeature]];
+    dividedRoadFeature.attributes = @{
+        @"ref": @"42",
+    };
+    element = [[MGLRoadFeatureAccessibilityElement alloc] initWithAccessibilityContainer:self feature:dividedRoadFeature];
+    XCTAssertEqualObjects(element.accessibilityValue, @"Route 42, Divided road, southwest to northeast");
+}
+
+@end
diff --git a/platform/macos/macos.xcodeproj/project.pbxproj b/platform/macos/macos.xcodeproj/project.pbxproj
index 14c8545094..c839bfadd3 100644
--- a/platform/macos/macos.xcodeproj/project.pbxproj
+++ b/platform/macos/macos.xcodeproj/project.pbxproj
@@ -670,6 +670,8 @@
 		352742791D4C235C00A1ECE6 /* Categories */ = {
 			isa = PBXGroup;
 			children = (
+				1FCDF1401F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h */,
+				1FCDF1411F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m */,
 				DA8F25A61D51CB270010E6B5 /* NSValue+MGLStyleAttributeAdditions.h */,
 				DA8F25A71D51CB270010E6B5 /* NSValue+MGLStyleAttributeAdditions.mm */,
 			);
@@ -959,8 +961,6 @@
 		DAD1657F1CF4CF50001FF4B9 /* Categories */ = {
 			isa = PBXGroup;
 			children = (
-				1FCDF1401F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.h */,
-				1FCDF1411F2A4F3600A46694 /* MGLVectorSource+MGLAdditions.m */,
 				408AA8601DAEED3300022900 /* MGLPolygon+MGLAdditions.h */,
 				408AA85C1DAEED3300022900 /* MGLPolygon+MGLAdditions.m */,
 				408AA8611DAEED3300022900 /* MGLPolyline+MGLAdditions.h */,