An in-vehicle driver aid at traffic signals. Paper prepared for the 51st Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1972.

A personal, dynamic, in-vehicle display aids automobile drivers in making a smoother and safer approach to the signal, especially when the signal indication to be encountered was red. Of the three displays examined the light display, which resembled the real traffic signal, was most effectively utilized by the drivers.