Honda is pragmatically taking the next step for the generation of semi/fully autonomous driving vehicles. This testing program, Universal Traffic Management Systems (UTMS), is using feedback from the local traffic light system to manage the best timing and best average speeds. The system will advise when the upcoming light will turn green and if too close, advise to begin coasting and avoid sudden braking. If you're impatient: when stopped at red lights, the system will count down to 'go' green light.
Take my money.
Honda Worldwide | March 28, 2014 "Honda to Begin Demonstration Testing of Driving Support System on Public Roads Utilizing Traffic Signal Information in April 2014"