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Google Maps JavaScript API v3

Traffic, Transit and Bicycling Layer

The Traffic, Transit and Bicycling layers modify the base map layer to display current traffic conditions, or local Transit and Bicycling route information. These layers are available in select regions.

  1. Traffic Layer
  2. Transit Layer
  3. Bicycling Layer

Traffic Layer

The Google Maps API allows you to add real-time traffic information (where supported) to your maps using the TrafficLayer object. Traffic information is provided for the time at which the request is made.

function initialize() {
  var myLatlng = new google.maps.LatLng(34.04924594193164, -118.24104309082031);
  var mapOptions = {
    zoom: 13,
    center: myLatlng
  }

  var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

  var trafficLayer = new google.maps.TrafficLayer();
  trafficLayer.setMap(map);
}

google.maps.event.addDomListener(window, 'load', initialize);

View Traffic example

Transit Layer

The Google Maps API allows you to display the public transit network of a city on your map using the TransitLayer object. When the Transit Layer is enabled, and the map is centered on a city that supports transit information, the map will display major transit lines as thick, colored lines. The color of the line is set based upon information from the transit line operator. Enabling the Transit Layer will alter the style of the base map to better emphasize transit routes.

Transit information is only available in select locations. To see a list of cities where public transit information is currently available, please consult [this list](https://www.google.com/landing/transit/cities/index.html).

If you’re a public agency that oversees public transportation for your city and would like your data to be included, please visit the Google Transit Partner Program site to learn more.

The following example shows the Transit layer enabled on a map of London, UK:

function initialize() {
  var myLatlng = new google.maps.LatLng(51.501904,-0.115871);
  var mapOptions = {
    zoom: 13,
    center: myLatlng
  }

  var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

  var transitLayer = new google.maps.TransitLayer();
  transitLayer.setMap(map);
}

google.maps.event.addDomListener(window, 'load', initialize);

View Transit example

Bicycling Layer

The Google Maps API allows you to add bicycle information to your maps using the BicyclingLayer object. The BicyclingLayer renders a layer of bike paths, suggested bike routes and other overlays specific to bicycling usage on top of the given map. Additionally, the layer alters the style of the base map itself to emphasize streets supporting bicycle routes and de-emphasize streets inappropriate for bicycles.

The following example shows the Bicycle layer enabled on a map of Cambridge, MA:

function initialize() {
  var myLatlng = new google.maps.LatLng(42.3726399, -71.1096528);
  var mapOptions = {
    zoom: 14,
    center: myLatlng
  };

  var map = new google.maps.Map(
      document.getElementById('map-canvas'),
      mapOptions);

  var bikeLayer = new google.maps.BicyclingLayer();
  bikeLayer.setMap(map);
}

google.maps.event.addDomListener(window, 'load', initialize);

View Bicycling example

Dark green routes indicated dedicated bicycle routes. Light green routes indicate streets with dedicated “bike lanes.” Dashed routes indicate streets or paths otherwise recommended for bicycle usage.