What does sign B1 indicate?

The sign referred to as B1 indicates the slowest speed you may drive. This is important because it helps regulate traffic flow and ensures that all vehicles maintain a minimum speed that is safe and appropriate for the road conditions. Signs that specify a minimum speed are particularly useful on highways or busy roads where slower-moving vehicles could create hazards or impede the overall movement of traffic.

By establishing a minimum, road safety is enhanced as it encourages vehicles not to travel below a specific speed, facilitating smoother transitions and reducing the likelihood of collisions caused by significant speed differentials between vehicles. Understanding such signs is crucial for safe driving practices and supporting overall roadway efficiency.