The
green wave is an
idea in
traffic flow such that if you exactly follow the
speed limit between two or more
traffic lights, you will pass through them on
green. Going too
fast will ensure that you have to stop at
each
and every traffic light for about 5 seconds.
Idealy, if an entire area is done with the green wave, the only time someone will have to stop is when making a turn (thus changing the traffic pulse) or driving unsafe (too fast or too slow).