Page:UK Traffic Signs Manual - Chapter 5 Road Markings. 2003 (Sixth Impression 2009).pdf/43

 downhill until they meet, using a road marking to diagram 1013.1 version B (see figure 5-7). The taper in the version B marking (see figure 5-1) should not be sharper than 1 in 50.

Where there are climbing lanes on both sides of the hill and the road has been widened on the crest to 13.2 m, as indicated in TD 9 / 93 (Amendment No.1) in Volume 6 of the Design Manual for Roads and Bridges (see para 1.4) then:

(i) if the length of 13.2 m wide carriageway (including any hatched area) between the tapers is 500 m or more, a conventional layout should be used between the tapers,

(ii) if the length of 13.2 m wide carriageway between the tapers is less than 500 m, the climbing lanes should overlap as shown in figure 5-8. In this case the distance between the tapers (i.e. the length of 13.2 m carriageway including hatching) should not be less than 200 m.

If the carriageway over the crest remains unchanged in width at 10 m, the marking layout shown in figure 5-9 should be adopted.

Double white lines are used at some level crossings even when the conditions do not meet the visibility criteria in table 5-2 (see paras 19.9 to 19.17 for details). Markings should be installed at level crossings only after consultation with HM Railway Inspectorate. 41