Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/170

 The plans generally show signing in the primary direction. In some plans, e.g. tidal flow, signing and coning demonstrating lane closures and lane changes in the opposing direction are included for clarity. The principles which guide the design of temporary trafﬁc management arrangements for the primary direction also guide the design for the secondary direction and designers will need to apply them appropriately in order to produce the full temporary trafﬁc management design.

The approach zone starts at the first sign and continues to 100 m upstream of the ﬁrst sign requiring a lane-change decision.

List of plans:

Plan DZA1 Approach zone for a dual carriageway road with a permanent speed limit of 40 mph or less

Plan DZA2 Approach zone for a dual carriageway road with a permanent speed limit of 50 mph or 60 mph

Plan DZA3 Approach zone for a dual carriageway road for which the national speed limit applies, where queuing is expected

The principles for advance signing are:
 * "road works” signs (7001) with distance plate (572) on the near side and the off side, placed 300 m in advance of the works;
 * where the speed limit is 30 mph the distance plates may be omitted.

Keys to the plans are given in Tables A1.4 and A1.5 of Appendix 1.

NOTE: The distance on the supplementary plate refers to the location of the initial cone of the works lead taper. 169