Which hand signal indicates that you are slowing down or stopping?

The hand signal that indicates you are slowing down or stopping is represented by the left arm bent downward. This signal is important for communicating your actions to other drivers and cyclists when you are unable to use your vehicle’s brake lights, particularly in situations where these lights might not be visible. By bending your left arm downward at a 90-degree angle, you are clearly indicating your intention to decelerate or come to a stop.

Using this hand signal is crucial for safe driving, as it helps ensure that other road users are aware of your actions and can adjust their own driving accordingly. The other options represent different hand signals: a left arm bent upward typically signals a right turn, while a left arm straight out signals a left turn. The right hand raised does not conform to standard hand signals typically used for turns or stopping. Thus, the bent downward position is specifically reserved for signaling a decrease in speed or stopping.