At what distance must a driver signal before turning?

A driver must signal at least 100 feet before making a turn to ensure that other drivers and pedestrians are aware of their intentions. This distance provides sufficient time for others sharing the road to react appropriately by adjusting their speed or position. Signaling early is crucial for safety, as it helps prevent accidents by giving following vehicles adequate notice to prepare for the change in traffic flow.

While signaling at shorter distances may still provide some notice, it may not be enough time for other drivers to respond safely, particularly in busy traffic situations. Thus, the practice of signaling at least 100 feet is a standard safety measure recommended in traffic regulations to facilitate safe driving behavior.