I have one at the first light I come to when commuting to work. At 6:15am, there are rarely cars to trigger it as it's an odd light with a 'left on the arrow' facing me because it's the end of a major avenue, but not on my side as it's the side coming from a residential neighborhood. If I go hit the walk button (only on the left side, as the right has no ped crossing, I said it was an odd light pattern), it only goes 'WALK' while the opposite side has the 'left on the arrow' and my side still does not change. Crap. The sensor is worthless, I've bounced on the edge, set my bike down, cursed at it. Nothing. It's wait for a car, or cross on the left side walk, then cross again to get to the right side so I can continue. To think that right across the street is where the 'bike lane' starts. Getting there can be a hassle.