[net.cycle] Traffic Light Sensors: A question...

macrev (12/08/82)

I haven't read all the articles on sensors, so someone may already
have answered my question.  If it's already been discussed, maybe
someone can send me a mail message with an answer.  I'm familiar
with the "roll-over" type of sensor -- my question is, are there
other types of sensors?  There's a left-turn light near my home
that I run (red) on a regular basis.  There's nothing in the
pavement (nothing obvious, anyway) to indicate a roll-over sensor.
I've seen cars get a green light there, but when I'm on my bike
I NEVER get the green.  Any guesses?

Mike Lynch
BTL Short Hills