Wondering what it means when a biker bends their left arm down with the palm facing back? It's a common hand signal-here's ...

To signal a stop, the rider extends their left arm outward and bends their elbow 90-degrees downward - towards the road - with their hand open and palm facing backwards. The signal should continue ...

This will ensure that the leader doesn't have to ask everyone to stop ... hand gestures that bikers use. For instance, the leader of your biker group may swing their left palm downward to signal ...