Regulatory traffic signs indicate a traffic regulation that applies at a specific time or place on a road. Disregard of a Regulatory traffic sign constitutes a violation of the highway traffic act. RB Series Traffic Signs are road use control signs which indicate the permitted or prohibited use of a road. RB Traffic Signs sub-class includes traffic signs relating to the control of speed, turns, direction of travel, passing, traffic lane usage, vehicle weights and dimensions, parking, pedestrians and other road users.