What is the correct hand signal for indicating a stop or decrease in speed?

The correct hand signal for indicating a stop or a decrease in speed is to have your hand down. This signal is universally recognized among drivers and serves as a clear visual cue to those around you that you are about to slow down or come to a stop. When your hand is extended downwards, it communicates to vehicles and pedestrians that caution is warranted, allowing them to anticipate your actions and maintain safety on the road.

By using this hand signal, you not only enhance your visibility to others but also contribute to safer driving practices overall. It is crucial to be aware that other options correspond to different signals: raising your hand up indicates a turn to the right, extending your hand straight out signals a left turn, and placing your hand out is also specific to turning left but does not indicate a stop. A proper understanding of these hand signals promotes effective communication while driving.