My idea is to put a sign on top of the driver's car, where the roof tops go, to be able to inform the other drivers.
For example, accident, accident near, stopped car, traffic jam near...
It can be a very good idea to facilitate the security of others without the need of admins.
Is like put a sign in the road like they put in calais, but faster, because the player that have the pilot car see it, stops and put the text that inform the danger.
I draw an idea, but is a very simple draw, is only to imaginate how it can be.