1.,Flat traffic delineator, 1   At least three other flat traffic delineators must also be placed in relation to the obstruction.     2   Each flat traffic delineator must be so placed as to face traffic approaching the obstruction from the side of the obstruction on which it is placed.   ,
2.,Road vehicle sign, 1   It must be placed to face traffic approaching the stationary vehicle from the front, rear or side of the vehicle on which it is placed.     2   It must be securely fixed to the stationary vehicle.     3   It must not obscure any registration plate, lamps or reflectors of the stationary vehicle.   ,
3.,Traffic cone,At least three other traffic cones must also be placed in relation to the obstruction.,
4.,Traffic pyramid,At least three other traffic pyramids must also be placed in relation to the obstruction.,
5.,Traffic triangle, 1   A traffic triangle must be placed at least 45 metres away from the obstruction.     2   A traffic triangle must be so placed as to face traffic approaching the obstruction from the side of the obstruction on which it is placed.   ,
6.,Warning lamp, 1   A warning lamp may be used only in conjunction with another traffic sign lawfully placed in accordance with these Regulations being—   a   a flat traffic delineator;     b   a keep right sign;     c   a road vehicle sign;     d   a traffic cone;     e   a traffic pyramid; or     f   a traffic triangle    and shall be so placed as not to obscure that other traffic sign from the view of approaching traffic.     2   Not more than one warning lamp shall be placed in conjunction with each such other traffic sign.   ,