What does a white diamond symbol on the roadway indicate?

A white diamond symbol on the roadway indicates a special lane restriction. This symbol is often used to designate lanes that are reserved for specific types of vehicles, such as buses, carpools, or bicycles. It serves to inform drivers about the proper usage of the lane, emphasizing that certain restrictions are in place for the benefit of safety or to promote more efficient transportation options. Recognizing this symbol is crucial for adhering to lane regulations and ensuring that all road users can navigate effectively and safely.