What is the proper hand signal for a left turn?

The proper hand signal for a left turn is to extend your left arm straight out from the driver's side window. This signal is universally recognized and indicates to other road users, including drivers, cyclists, and pedestrians, that you intend to make a left turn. Hand signals are an important part of driving as they provide clear communication about your intentions, especially in situations where your vehicle’s turn signals might not be visible or functional.

This method of signaling helps ensure safety on the road by minimizing misunderstandings about your movements. Other signals, such as extending the left arm upward or the right arm extended, correspond to different actions—specifically a right turn or a stop—thus confirming that extending your left arm straight out is the correct signal for a left turn.