What does it mean when a driver's hands and arms are straight out in a hand signal?

When a driver's hands and arms are extended straight out from the sides, this hand signal indicates a left turn. This position allows other drivers and pedestrians to see the signal clearly and recognize the driver's intention to make a left turn. The signaling helps improve safety on the road by providing clear communication about the driver's actions, which is essential for maintaining the flow of traffic and preventing accidents.

In contrast, the other signals have different meanings: a right turn is indicated by the arm being raised upward, a stop signal involves the driver's arm being extended downward, and slowing down is typically shown with the arm bent at the elbow and raised. Each hand signal serves a unique purpose, ensuring that all road users can understand a driver's intentions.