It seems to me that this would be an excellent partner for Waze. It tells you how fast to go to make the next traffic light. It will only work if a lot of people are using it. By pairing with Waze, it would really help distribution. It would also give Waze an even more unique product.
http://techland.time.com/2011/08/29/traffic-app-by-mit-and-princeton-could-change-driving-forever/