DUAL CARRIAGEWAY ROADS
Plan DC1: Dual carriageway road, hard shoulder closure only
The principles are:
- a "road works" sign (7001) with plate "On hard shoulder" (7001.1) on the near side, placed 800m in advance of the initial closure of the hard shoulder, i.e. the first signing to Detail A,
- a "NO HARD SHOULDER FOR ¾ MILE" sign (701 5) on the near side only, placed 400m in advance of the initial closure of the hard shoulder i.e. the first signing to Detail A. The distance shown may be varied but must be expressed to the nearest 10 yards for distances less than ½mile, to the nearest ¼ mile for distances of ½ mile or more but less than 3 miles and to the nearest mile for distances over 3 miles, the distance shall be expressed as "YARDS", "MILE" or "MILES";
- a "WORKS ACCESS ONLY 100yds" sign (7306) on the near side only, adjacent to initial closure of the hard shoulder, i.e. the first signing to Detail A,
- signing to Detail A on the hard shoulder 100 m in advance of the first cone of longitudinal coning to Detail C1, repeated 50m from the first cone of longitudinal coning to Detail C1,
- a "WORKS TRAFFIC ONLY" sign (7301) located on the near side only adjacent to the first cone of longitudinal coning to Detail C1,
- coning to Detail C1 adjacent to the works area — coning to Detail D (18 m) may be used beyond the works area on long straight lengths parallel to the line of traffic, where coning is required for safety reasons,
- a "WORKS EXIT" sign (7302) on the near side only at the end of the coning; and
- at the end of the works, a "road works" sign (7001) in combination with sign "End" (645) placed on the near side of the carriageway, 90m from the end of the works.
If a temporary mandatory speed limit is imposed, then the following additional principles apply:
- a "road works" sign (7001) with distance plate (572) showing "1 mile" on the near side and off side, one mile in advance of the initial closure of the hard shoulder, i.e. the first signing to Detail A;
- a "road works" sign (7001)with distance plate "800 yds" (572) on the near side (in place of the plate "On hard shoulder" (7001 .1)) and off side, placed 800m in advance of the initial closure of the hard shoulder;
- one pair of temporary speed limit signs to diagram 670 located 100m in advance of the initial closure of the hard shoulder,
- speed limit repeater signs are required throughout the works; see Table 3.4 of SectionD3.7, and
- an "end of road works" sign (7001/ 645) is also required on the off side, as well as the near side.
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