The Lighting Research Center in Troy, New York investigated whether white light improves the peripheral vision of motorists. A special board was placed beside a stretch of road, simulating movement towards and away from the road. 13 subjects underwent a series of tests during the daytime, and then at night, with the road lit by CosmoWhite and yellow sodium lamps.
A total of 686 separate trials were carried out, with the board moving in random patterns. When the board moved away from the road, drivers were expected to accelerate. When it moved towards the road, the driver was expected to brake.