Page:UK Traffic Signs Manual - Chapter 5 Road Markings. 2003 (Sixth Impression 2009).pdf/29

 NOTE: Different requirements apply to taper and arrow details for diagram 1040.3; see figure 4-13.

If road studs are used on the dual carriageway section, near side red studs should be continued through the merge. Amber studs should be used with the boundary line to diagram 1040.4; beyond the end of the central reservation the studs should revert to white, but be uni-directional.

Diagram 1041 (figure 4-17) and its parallel-sided version (diagram 1041.1) are intended to separate streams of traffic travelling in the same direction, e.g. on the approach to a junction or to a pedestrian refuge in a one-way street. One of the boundary lines is omitted where the marking is placed alongside diagram 1049 delineating a bus or cycle lane.

Diagram 1042 (figure 4-18) is intended for use between a motorway or high standard all-purpose road and a slip road (see paras 10.2 to 10.12). It may also be used at the bifurcation or convergence of two motorways or similar roads. The parallel-sided version(diagram 1042.1) is used to indicate a segregated left turn lane (see paras 8.34 to 8.38). The width of the longitudinal lines may be 150 mm when the marking is used between two lanes at a roundabout (see figure 8-5) or on an all-purpose dual carriageway road without hard shoulders. Except at a roundabout, the boundary lines may be replaced with the marking shown in diagram 1012.2 or 1012.3 as appropriate.



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