Originally Posted by
metabike
I am a traffic engineer by trade - detector loops work by inductance, i.e. ferrous metals cause a change in the inductance and "tell" the signal controller that there is a vehicle there. If you are riding an all-carbon bike, you are SOL as far as ever getting a loop to detect you.
Do you suppose that a couple of aluminum plates in the soles of your biking shoes would trigger it, if you put your foot down directly on the loop? My instinct is that it would work.