What is the proper hand signal for a left turn?

The proper hand signal for a left turn is to extend the left arm straight out from the driver's side window. This signal is used to clearly indicate to other drivers and pedestrians your intention to make a left turn. Proper signaling is crucial for safety and communication on the road, ensuring that everyone is aware of your intended maneuvers.

In comparison, other signals serve different purposes: bending the left arm upward is a signal for a right turn, while extending the right arm straight out indicates a right turn as well. Bending the right arm downward is used to signal a stop. Understanding these signals can help in making safe and responsible driving decisions.