What does back car mean?

[JudahMarie]

back car refers to the operation of making a 180-degree change in the direction of the car under road conditions where U-turns are allowed. Sometimes, U-turns are also required in non-road conditions such as parking lots, and the method is basically the same. Motor vehicles are not allowed to make U-turns at railway crossings, pedestrian crossings, curves, narrow roads, bridges, steep slopes, ramps, or sections of the road where danger is easily caused. Therefore, it is necessary to choose intersections with low traffic volume, flat, wide, and safe areas with solid shoulders. Motor vehicles can make U-turns at locations where there are no signs or markings prohibiting U-turns or left turns, but they must not hinder the passage of other normally driving vehicles and pedestrians.