Very interesting and very applicable. On a MVC scene with Police, Fire, Ambulance, Highways, More Fire, Tow trucks, and more fire there can be so much light that it's hard to see where you are supposed to drive even if you're not mezmerised by the flashing lights.
I know that our municipal fire dept's trucks have on board computers that begin to shut down some of the side strobes and corner clearers etc. when parked and well as staging down after being stoped for (x) # of minutes. Likely for the same reason.