Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/89

SIGNING PRINCIPLES

This sign is used to show the distance over which a hazard or prohibition extends.

This sign is used to show the distance ahead to the hazard.

When one road joins another in the immediate vicinity of works, a "road works" sign to diagram 7001 accompanied by a distance and direction to hazard sign to diagram 573 should be located on the ﬁrst road indicating the direction in which the works are located. In the same circumstances the sign may be used with certain other warning signs; see TSRGD and Chapter 4. The distance may be omitted.

The location of road works immediately ahead on a route indicated by a plate to diagram 7001.2 and variants must be erected below a "road works" sign to diagram 7001 before a junction. The plate warns drivers of possible delays on the "named" road so that they may opt to ﬁnd an alternative route. The route number may be varied. "Northbound" may be varied, e.g. to "Southbound" or it may be omitted and "On" inserted, e.g. if works are in both directions from this junction, the sign would become "On M1".

It should particularly be noted that the "other danger ahead" sign to diagram 562 is not normally appropriate for use at road works, but should be used to warn drivers of unexpected hazards ahead. The sign must always be accompanied by the appropriate supplementary plate to diagram 563 indicating the nature of the danger, but may also be used in conjunction with signs to diagram 563.1 and 7022. Suitable x-heights and the overall sizes of the plates are set out in Table A1.2 (Appendix 1). 88