What does a white diamond symbol on the pavement indicate?

Answer: B — lane is reserved for buses or high-occupancy vehicles

The white diamond symbol on the pavement serves as a clear indication that the lane is reserved for buses or high-occupancy vehicles, typically defined as vehicles carrying multiple passengers. This designation is important for traffic management, as it prioritizes the movement of public transport and carpooling, which can help reduce congestion and promote more efficient use of road space. Understanding this symbol is crucial for drivers, as using these reserved lanes improperly can result in significant fines or penalties. This helps ensure that public transportation remains a viable and appealing option for commuters, contributing to overall improved transit efficiency and environmental benefits.