What does an arm signal to traffic typically indicate when a person wants to turn left?

An arm signal to indicate a left turn when driving involves the left hand being extended horizontally out of the vehicle. This position is universally recognized as the standard gesture for signaling a left turn, providing clear communication to other road users, including drivers and cyclists. An extended left hand visually signifies the driver’s intent to turn left, ensuring safety and preventing misunderstandings on the road.

Options like a right hand extended, or either bent at the elbow, do not communicate a left turn. The right hand extended signals a right turn, while a bent elbow typically indicates a turn in the direction of the bent arm, and none of these convey the intent to turn left as distinctly as the left hand extended horizontally does.