The colors of the lines usually indicate similar classes of information: topographic contours (brown); lakes, streams, irrigation ditches, and other hydrographic features (blue); land grids and important roads (red); and other roads and trails, railroads, boundaries, and other cultural features (black).

Tip: You can find road closures marked with a dotted red line where the road is closed. Public transit. The lines on the map show bus, subway, and rail routes. To find more information and upcoming trains or buses, choose a station stop icon .

Red: There are two types of red: normal and dark red. If your maps have the traffic layer or selected Directions, red on the street means heavy traffic and could signify an accident or construction is causing it. Dark red means very heavy traffic.

Green: Dedicated lanes are roads that are shared with cars and have a separate bike lane. Dotted green line: Bicycle friendly roads are roads that don't have a bike lane but are recommended for cyclists. This might just be limited to google maps. Always check the map's legend or key to determine exactly the meaning.