Visual demand of curves and fog-limited sight distance and its relationship to brake response time. SAfety VEhicles using adaptive Interface Technology (Task 2b).

To determine the relationship between visual demand and brake response time, subjects drove a two-lane rural road in the UMTRI simulator, sometimes following a lead vehicle that braked. The road consisted of straight and curved sections with varying sight distances (due to fog), and therefore visual demand varied. Visual demand was measured using the visual occlusion method and by ratings. (Author/publisher)