What is the standard hand signal for a left turn?

The standard hand signal for a left turn is to extend the left arm straight out from the side of the vehicle. This clear and noticeable gesture indicates to other drivers and pedestrians that the driver intends to make a left turn. The position of the arm makes it easy for others to see the signal, whether in daylight or low-light conditions.

The other signals provided serve different purposes; for instance, a bent upward arm indicates a right turn, while a bent downward arm signifies a stop or decrease in speed. Extending both arms to the sides is not a standard hand signal for any direction but could indicate a larger vehicle or a wider turn. Understanding these signals is vital for effective communication on the road and ensuring the safety of all road users.