Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/258



The principles for the works area are as follows:
 * to mark the contra-flow running lanes:
 * cylinders and studs to Detail K,


 * in the primary direction, a sign indicating open and contra-flow lanes (7203) with distance plate "For x miles" (7209) placed on the near side and repeated at ½ mile intervals through the contra-flow, and
 * in the secondary direction, a sign indicating hard shoulder, open and contra-flow lanes (7203.1) with supplementary plate "For x miles" (7209) placed on the near side and repeated at ½ mile intervals through the contra-flow.

Plan DTF5 illustrates a works zone for a tidal flow layout for a full contra-flow on a two-lane carriageway and Plan DTF6 illustrates a works zone for a tidal flow layout for a partial contra-flow on a three-lane carriageway.

Keys to the plans are given in Tables A1.4 and 1.5 of Appendix 1.

NOTE: All cone gates are shown in position for "Condition 1+2". Positions for "Condition 2+1" are shown dotted. 257