Don't get one of those! Devices that change the traffic lights using Infrared signals like the emergency vehicles use are illegal and if caught w/ one they will come down hard on you. Imagine if 2 or 3 people out of ever 10 drivers had one of those, streets would be madness.They do have a device that signals the traffic light just like the emergency vehicles do. I've seen them for about twenty dollars. Check ebay.
I have not put them in the boots yet, there is a slot in the heel that I will glue them in. I figure I would double up, put two in each heal. I will let you know now they work, but there arn't too many times I get stuck at the lights, but I figured I would give it a try.the ones I have just need attached to the bottom of the plastic work.. I sent a set to Ted and he is putting them in his boots (they are pretty small but BIG strong) I sent him 12 for $12 (enough for 3 or 4 bikes or 12 boots LOL)