Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/215

DUAL CARRIAGEWAY ROADS

These plans illustrate segregated contra-flow by destination, where diverging and merging traffic uses the hard shoulder.

Joining carriageways and slip roads should be reduced to a single lane unless there is a lane gain on the main carriageway. Where the joining carriageway is a dual carriageway the general principles for the advance signing required and the entry taper details should be taken from Plan DZB5 in Section D6.16. For a motorway/motorway intersection Plan DZB6 in Section D6.16 should be used. Where a speed limit lower than the permanent speed limit is in place speed limit signs will be required, placed on both sides of the carriageway.

Where a lane diverges prior to a junction the following signs are used to direct traffic to the junction: 214
 * the existing final direction sign and any advance direction signs, including the 300, 200 and 100 yards countdown signs (823, 824 and 825) or road markings, downstream of the diverge that contain incorrect information should be covered up or removed, as appropriate,
 * where required to direct traffic to a junction exit the lane-change signs should be to diagram 7201 displaying route and junction number,
 * one pair of diversion signs (7211.1)with a "USE HARD SHOULDER" top panel (7260) and, where appropriate, a route and junction number may be shown on the main panel above the diversion arrow and any symbol — the sign to be placed on the near side and off side of the carriageway directly before the hard shoulder diverge (part of the lead-in zone, see Plan DZC9 in Section D6.17),
 * at the nosing of the hard shoulder diverge bifurcation (part of the lead-in zone, see Plan DZC9 in Section D6.17), a yellow direction sign with route number and a direction arrow (7241 on a motorway and 7242 on other roads), and
 * a "lane closed" barrier (7105) and "keep left/right" arrow (610) are located behind the coning on the off side, facing approaching traffic at the start of slip road,