15. A pedestrian traffic light signal of the size, colour and type shown in Diagram 4006 in the Regulations shall be provided on the right hand side of the road on each approach to the crossing located so as to be in line with or no more than 1 metre on the railway side of the line referred to in paragraph 13. The pedestrian traffic signal shall be positioned so as to face outwards from the crossing towards approaching road traffic and shall be capable of directional adjustment.