Thanks for the expalination
If I understand correctly:
So basically the infrastructure looks at the GPS n every car at all times. Then itt merges that info with where yellow flags are and when a car gets to the yellow flag zone,s display light up?
So there is some significant computer power as well as GPS receivers that "talk" to the individual cars?
Now it makes some sense.
Each "zone" for a yellow needs to somehow be known by the master brains so it can turn the in car displays on and off as they enter and leave the yellow zone, right?
Someone a wholwe lot smarter than me is going to do that!!!!!