Barbados Highway Code Practice Test

The correct hand signal for slowing down or stopping a vehicle is to extend the right arm and hand horizontally. This action is universally recognized among drivers and cyclists as a clear indication that the vehicle is reducing speed or preparing to stop. When the right arm is extended out to the side, it allows other road users to easily see the signal and respond appropriately, enhancing overall road safety.

In contrast, the other signals do not effectively communicate the intention to slow down or stop. For instance, extending the left arm and hand upwards may suggest a turn or alertness but does not clearly indicate a decrease in speed. Similarly, extending both arms downwards typically signifies a stop but may not be as visible or recognizable to other drivers, particularly if the vehicle is positioned in traffic. Waving both arms side to side does not have a standardized meaning in driving contexts and could create confusion rather than convey a definitive signal. Therefore, using the right arm extended horizontally is the most effective and universally accepted method for signaling a slow down or stop.