The hand signal, now viral on Instagram, involves tucking your fingers over your thumb to reportedly alert someone you need help.

The hand signal for a change to double file will see ... if they're wearing a motorcycle helmet (as they should, for safety's sake). Other times, a rider may need to take a break for less ...

Emergency stops are tricky, as using one hand to signal and one on the bars limits the amount of control the rider has over the motorcycle. This is one of many reasons taking a motorcycle safety ...