Try to set an example to the drivers.
At stop lights, make sure the drivers behind you may turn right without waiting for you to move over.
At 4 way stop signs, don't use track stands, instead come to a complete stop and follow the sequence rules. When drivers see your foot touching the ground, it sends a positive signal, do it.
When riding with a group, ask the members if they also have drivers' license and drive their motor vehicles. If you're not the leader of the group ride, approach that group leader before the ride begins and have a conversation.
If you are observant in the little things, you will be the same in bigger life things.