Paragraph 15

The centre line of the carriageway shall be marked on the crossing between the stop lines mentioned above and for a distance of 15 metres on each side of the railway measured along the centre of the carriageway from the stop line with a reflectorised double continuous line carriageway marking of the size, colour and type shown in Diagram 1013.1A in the Regulations. The centre line shall be continued for a distance of 20 metres on each side of the railway, measured along the centre of the carriageway from the ends of the double continuous line, with a reflectorised double line carriageway marking of the size, colour and type shown in Diagram 1013.1D in the Regulations wherein the continuous line is on the left-hand side of the broken line.