Often if a motorcyclists dies, its tradition to have memorial ride in honor of him. This is organized by his fellow bikers and friends. Everyone gather together and they all ride to a predetermined destination.

There is no official symbolic meaning, everyone can interpret it the way see fit. Some say its like his spirit is riding with all his friends, others say to symbolize his spirit riding on. What ever the case may be, this is a universal thing to between all bikes, of riding styles and in every country.
On the ride there are sometimes stickers given out in remembrance of him. And if he belonged to a club, then people might wear patches saying something like “RIP Jimmy “Speeds” Smith”