Originally Posted by
cyccommute
I find, however, that a major problem with cyclists and motorists as well as the general public is that they don't have a clue as to how an inductive loop...the "magnet" sensor...works or how to position themselves so that they can actually trip the light. If you ride directly over the wire in the pavement, the light can be easily tripped even by a carbon fiber bike. It's not the bike that trips the system but the wheels of the bike that trip the system.
That's a whole other issue, a lot of induction sensors where I commute are being unplugged and replaced by cameras that do not see cyclists. There's no indicator of whether a sensor is actually connected or not. When connected, they work, obviously.