What does a white diamond symbol on the road signify?

The white diamond symbol on the road signifies a High-Occupancy Vehicle (HOV) lane. HOV lanes are designated for vehicles with multiple occupants, typically to promote carpooling and reduce traffic congestion. This lane is marked clearly with a diamond shape to alert drivers that certain restrictions apply, aimed at facilitating smoother flow for vehicles with more than one passenger. Understanding this symbol is essential for drivers, particularly in commercial vehicles, as it can affect routing and compliance with traffic regulations.

While contexts such as construction zones, pedestrian crossings, or speed limit zones each have their own distinct signage, they do not utilize the white diamond symbol, making it specifically representative of HOV lanes.