What is the proper hand signal for a left turn?

Answer: B — Extend your left arm straight out

The proper hand signal for a left turn is to extend your left arm straight out from the driver's side window. This gesture is universally recognized among drivers as a clear indication of the driver's intent to make a left turn. Using this signal helps enhance safety on the road by providing an additional visual cue to other drivers, cyclists, and pedestrians about your maneuver. In contrast, extending the left arm straight up is a signal for a right turn, while extending the right arm straight out indicates a right turn as well. Extending a finger downwards is a signal for stopping or slowing down. Each hand signal has a specific meaning, making it essential for drivers to use the correct one to ensure clear communication and contribute to overall road safety.