Sweden

摘要

Visual enhancement studies have traditionally focused on traffic situations with seriously degraded visibility conditions, such as nighttraffic and driving in fog. Based on accident statistics and theoretical considerations it is argued in this paper that it would probably be better from a safety point of view if the study of visual enhancement were concerned primarily with normal, good visibility conditions. Visual enhancement is however, also needed in situations with impaired visibility. Then it is better to improve direct visibility (e.g., by lighting) than to improve visibility indirectly (e.g., by radar), because in the former case the advanced human visual system may be used to its full capacity.