Signals that turn red when a speeding car approaches

[froggie]

A far better solution would be to simply time all the signals for the speed limit.

I fully agree, but it's not always that easy in an urban area with a dense core of traffic signals.

[Brandon]

A far better solution would be to simply time all the signals for the speed limit.

I fully agree, but it's not always that easy in an urban area with a dense core of traffic signals.

It's easier than one might think.  Usually there's a street that carries the dominant traffic flow and most signals are at minor streets.

[froggie]

Doesn't quite work that way in DC, where the cross streets carry significant flow themselves.

[Alps]

The problem is drivers don't read. I saw the sign, I didn't speed, but 3 cars in front of me did. Good job, idiots, now we all have to wait longer. I probably set fire to their cars or something.