小四轮拖拉机及其配套的拖斗,因其主要从事农田作业,在设计上就没有考虑拖斗的尾灯、刹车灯及转向灯问题。随着农村市场经济的日益繁荣,小四轮拖拉机运输作业越来越多,但由于设计功能不完善,夜间行车,拖斗后面无灯光显示,致使后面来车发现前方目标较晚,易造成追尾事故。为了弥 Small four-wheel tractors and its associated trailers, because it is mainly engaged in farm work, the design did not consider the trailers taillights, brake lights and turn lights. With the increasing prosperity of the rural market economy, small four-wheel tractor transport operations more and more, but due to the design of imperfect, night driving, behind the trailer no light shows, resulting in the back of the car to find the front of the target late, easy to cause rear-end ACCIDENT. In order to Mi