Not quite. We need data from toll, from government on planned events, getting data about where emergnecy vehicles are going. Obseving environmebt is only as rel

Not quite. We need data from toll, from government on planned events, getting data about where emergnecy vehicles are going. Obseving environmebt is only as reliable as the recongition. For example if I knew ambluancs is coming from behind I would pull over. But often this is last minute reaction and often we can barely make way for ambluancs. However, if dispatcher publishes signal and ambluance publishes its GPS then cars where the ambluance is heading can get that data in advance and calculate how far and when to pull over. Relying on doppler effect to calculate siren then get twenty cars to slow down is not a great design.