Cones and cylinders are used to delineate the traffic lane a driver should take past an obstruction,
accident or road works. The portability of these devices is of particular advantage in emergencies or when they
are used to delineate works which move progressively along a carriageway. Cones to diagram 7101.1, fl at
traffic delineators to diagram 7102 and cylinders to diagram 7103 are prescribed traffic signs. Traffic cones and
cylinders shall conform to BS EN 13422:2004 Vertical road signs. Portable deformable warning devices and
delineators. Portable road traffic signs. Cones and cylinders and must comply with regulation 56