What is the proper hand signal for indicating a left turn?

The proper hand signal for indicating a left turn is to extend the left arm straight out the driver's window. This signaling method is universally recognized and serves as a clear indication to other road users, including vehicles and pedestrians, that the driver intends to make a left turn. Using this gesture ensures that your intentions are visible to others on the road, promoting safety and reducing the likelihood of accidents during the maneuver.

Understanding hand signals is essential for bus drivers and other vehicle operators since they may need to communicate intent when their vehicle's turn signals are not functioning properly or in situations where visibility is limited. The other options represent different signals; for instance, signaling a right turn involves extending the right arm and using a circle is typically associated with indicating a right turn or a slow down, while lowering the arm communicates a stop or decrease in speed. Therefore, knowing the correct hand signals contributes to effective driving and enhancing road safety.