Are we allowed to nominate ideas that have not been invented?
If so, I propose some technical whizkid comes up with a short distance transmission device so emergency vehicles approaching controlled intersections either manually or automatically activate flashing lights mounted above the traffic lights, to give a visual warning to road users that an ambulance or firetruck responding to an emergency case or police car going to Macca's for a meal has a better chance of not being held up by people who either have the music so loud it breaks shop windows, or women and subbies on the mobile phone , who don't seem to get out of the way.
This way, anyone coming to an intersection with a flashing light can take a bit of care and try and see how they can avoid delays that could cost lives, or cold Big Macs.
Cheers