据统计，驾驶员80%的以上交通信息是通过视觉获得的，包括道路的表面形状、方向、交通信号、交通标志的内容、本车所处的交通环境以及对面方向上的车流等，以上信息在白天很容易通过视觉获得，但在没有光线的夜间，特别是在恶劣环境下（如：雨天、雾天或烟尘等干扰的情况下）就 According to statistics, more than 80% of the driver’s traffic information is obtained through vision, including the surface shape of the road, direction, traffic signals, contents of traffic signs, the traffic environment in which the vehicle is located and traffic flow in the opposite direction, etc. It is easily visualized during the day, but at night when there is no light, especially in harsh environments (such as rainy days, misty days or smoke and dust)