The hand-and-arm signal for slowing or stopping is indicated by:

The hand-and-arm signal for slowing or stopping is communicated by extending the arm out and down. This is a standard hand signal used by drivers to alert other road users, including cyclists and pedestrians, that they are about to reduce speed or come to a stop. This position is clear and visible to other drivers behind you and effectively conveys the message of your intention to slow down or stop.

Using the arm out and down minimizes confusion with other signals, such as arm straight out or arm raised, which are typically used to indicate different actions like turning left or right, respectively. Therefore, for safety and clarity on the road, this specific hand-and-arm signal is crucial for promoting effective communication among all road users.