What hand signal indicates a left turn?

The hand signal that indicates a left turn is a flat hand extended out. This signal is used to communicate to other drivers and pedestrians that the driver intends to make a left turn. When the driver's left arm is held straight out to the side, it clearly signifies the direction of the impending turn.

Effective communication while driving is essential for safety, and using hand signals is a traditional method for indicating turns and stops, especially in situations where turn signals may be less visible. The flat hand extended out serves as a universal signal recognized by all road users.

The other choices represent different signals: an arm turned down typically indicates a stop, an arm turned up signals a right turn, and a fist raised is also used for signaling a stop. Each signal serves a distinct purpose, reinforcing the need for drivers to be familiar with these gestures for safe navigation on the road.