求翻译：汽车行驶时所需要的交通信息中，80%以上通过视觉获得，能见度低，则影响驾驶员接受外界信息，使反应时间以及判断力下降，道路交通事故发生的可能性增大。是什么意思？

The car in the traffic information needed when, more than 80% available through Visual and in poor visibility, then the driver accept outside information, bring down the reaction time and judgment, the possibility of increasing road traffic accident.