Originally Posted by
mgw4jc
Would a carbon bike trip the sensor? I've usually just run it as mentioned and never even tried to trip it.
There is one light on my way home that I almost always have to trigger as there usually isn't any cars by the time I leave (it is a dead end with access to a school and park and bike path, so very light traffic in the evenings).
They have a nice painted line with a bike symbol so you know exactly where to place your wheels. My aluminum bike with carbon seatstay and for triggers the sensor with no problem.
One time I arrived at the light after someone with a carbon bike, who was sitting there an entire sequence (other direction got green, she didn't). I patiently waited a while till I suggested that we should swap places as my bike would trigger the sensor.
Maybe a carbon bike with enough metal elsewhere would work, maybe other sensors are more sensitive, but I haven't seen a carbon bike trigger one yet.