Share the ones you use. This was inspired by another thread on "police up ahead". These signals are for safety sake as much as they are for avoiding a ticket. Here's a couple I know to get us started. Police ahead - Hand on head or circle above. Single file - Hand vertical on helmet like a shark fin. Slow down - Wave hand up and down low at side. I'm thirsty, let's stop for something - Drink motion. Let's fuel up - Point to tank. Your signal is on - Hand blink open/closed and point. Your signal doesn't work - Hand blink, point and slide left/right. .....please share more that you know.