Slow Down:
This signal is useful because motorcycles generate
intense engine-braking forces, which do not activate the
rear-facing brake light. Extend your arm and swing your
palm down toward the road to tell everyone in the group
to slow down.
Follow me:
Used to announce a new, often self-appointed group
leader. Also used to segment a large group into a smaller
group. Make the signal by extending your arm forward at
the shoulder with your palm facing outward.
You Lead / Come: AKA the "YOU! Follow me!" signal:
It has two distinct. Start by pulling up alongside the rider
you want to follow or lead. In one motion, point to their
bike and then swing your arm forward. Repeat this motion
until the other rider understands.