This happened to me 3 times this weekend. Pull up to a stop light and it will not register your bike so it skips your turn because there are no cars to trigger the sensor. Then to make it even more frustrating when a car does finally pull up behind you and they wont roll up onto the sensors and then we are both sitting there. I have run a few reds (very safely) because of this. Not to mention all the times I am waving the person behind me to pull up or yelling pull up. I usually pull up into the cross walk just to make sure the person behind me will pull up far enough to trigger it and that still doesn't always do it. Someone said to put magnets on the bottom of the bike but that did not work, I think ours here are weight triggered but could be wrong.