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 .

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).

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.

This green line marches across OS maps and marks your right of way across country. Specifically, all public rights of way (like footpaths, bridleways etc) are marked using variations of the green dashed line. Waymarked trails are marked in a similar way with green diamonds.