Requirements for setting up roadblocks at mobile overload points

This is clearly marked. The requirements for setting up roadblocks at mobile overload control points are clearly marked and collected at road signs and speed limit signs. It must be a standard police car, that is, the appearance is painted with police words and warning lights. Roadblocks are obstacles that hinder road traffic. It can refer to the hydraulic safety barricade used as a fence during road construction to prevent terrorist attacks outside important buildings.