Conventional U.S. and European headlamps were used as a basis for comparison with three experimental mid beam in field tests to evaluate visibility and glare of alternative "meeting" beams. It was concluded that improved meeting beams should use headlamps similar to the ECE low beam for urban driving, augmented by a third lamp such as the U.S. "type III" lamps used in these tests to form the "ECE-US mid beam" for use as a meeting beam on two lane and divided highways.
Abstract