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

This paper reports a study designed to evaluate an in-vehicle display that would give drivers advance information of the signal indication at an approaching intersection. Travel characteristics and speed profiles as measured by buried detector loops were used to measure the utility of advance signal information. The author finds that a dynamic in-vehicle display increases the smoothness and safety of vehicle speeds at a signalized intersection.