Diamond lane

They are usually implemented to provide ways through traffic congestion, for safety reasons, and to encourage environmentally friendly transportation.

In most areas, violating the rules of a diamond lane is punishable by a fine.

Some common examples are: In some cases, these lanes may serve multiple functions.

For example, a diamond lane may be designated for buses, bicycles, and right turns.

The Federal Highway Administration's Manual on Uniform Traffic Control Devices states that diamonds indicates a lane reserved for high-occupancy vehicles.