Quote Originally Posted by Eden View Post
This is a common misconception, but the buried type of traffic detectors use induction (similar to a metal detector), not magnetism or weight. Any type of metal will set off an induction loop, so an aluminum or ti frame should set one off just as easily as a steel one (I suppose if you could drag around a bike made of gold that would work too ) . Even a CF bike, if it has metal rims/spokes will set trigger a traffic light that is set up to be sensitive enough.
Huh. I have a light I go through that recognizes me on my steel bike, but never on the aluminum one.

Speaking of solid gold bikes: http://living.oneindia.in/automobile...ke-060608.html

Also, I think here in Massachusetts, you have to wait two minutes before it's legal to run a red light. Two minutes feels like an eternity!