Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/48

 Constraints on the timing of deliveries may need to be considered at the design stage to ensure that materials can be safely delivered. Particular attention will also need to be given to the storage of materials that are hazardous to health through Control of Substances Hazardous to Health Regulations 1999 (COSHH) assessments.

The maintenance of traffic signals and street furniture at a junction on a single carriageway road should be carried out in good visibility and ideally in daylight. At traffic signal sites where the work is likely to be prolonged, the traffic authority may need to consider the installation of portable or temporary signals.

When maintenance work is being carried out on traffic signals, a "TRAFFIC SIGNAL MAINTENANCE" sign variant to diagram 7010.1 should be displayed. This sign must be reflectorised if it is not directly illuminated. The needs of pedestrians and other non-motorised roads users must be considered when traffic signals are removed from use, see Section D3.32 and Part2: Operations, Sections O3.13 and 03.14.

Typical layouts and signing for work at a signal island and a kerbside signal at a junction are given in Plans SM1 to SM3. The principles shown on these plans are also applicable for the maintenance of street furniture.

For signal crossing sites along a single carriageway road the approach coning and signing principles given in Plans SM1 to SM3 should apply.

The principles for works in the centre of a single carriageway road are illustrated in Plan SC2 in Section D5.5. 47