The ones around here use a white strobe light on the emergency vehicles, picked up by an optical sensor on the arm holding the light. They did a trial some years ago of putting the strobes on buses to improve transit efficiency but I don't think they ever did it for real.
Originally Posted by tdvance
The town where I went to college had a main drag with about 10 lights from end to end, one each block. They were apparently all run off a common timer. Westbound you could go all the way through without stopping. Eastbound you stopped at every....single....one....all....the....way...thro ugh. Most annoying.
Last edited by Trebuchet; 2008-May-01 at 05:04 PM.
Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.