What should be done on the roads near the factory? Traffic warning signs

Two warning signs should be erected at both ends of the road near the factory for passing vehicles, and the distance should be determined according to the speed of the vehicle (the distance is farther if the vehicle speed is faster, such as about 200 meters, and the distance is closer if the vehicle speed is slower, such as 100 meters) meters), the warning sign in large characters states: Please slow down if there are vehicles entering or exiting the intersection! There are two blocks in each direction (about 50 meters apart). If you consider the feelings of motorists, it will be safe