Gatso and police car
Discussion
tvrgit said:
The UTC system I was involved in in 1980 had 3 emergemcy "green waves" similar to what you describe. There was a brand new fire station built on the edge of an area signal system, and when they were leaving on a job, they pressed button 1, 2 or 3 depending if they were going north, south or east (there were no signals to the west). It's still there and working, as far as I know.
As you say, the function wasn't to let the fire engine through the red light (because they could go through anyway) it was to make sure that any queues already blocking the road, were cleared before they got there.
Point is, though, that's nothing to do with sensors that recognise individual emergency vehicles.
Was it Guildford Fire station??? That's the one I was trying to describe, but failed miserably!!! As you say, the function wasn't to let the fire engine through the red light (because they could go through anyway) it was to make sure that any queues already blocking the road, were cleared before they got there.
Point is, though, that's nothing to do with sensors that recognise individual emergency vehicles.
Gassing Station | Speed, Plod & the Law | Top of Page | What's New | My Stuff