Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/128



"STOP" and "GO" signs to diagrams 7023 and 7024 are used for the control of traffic on single carriageway roads by an operative or operatives on site, see paragraph D4.7.1. They are combined to form a double-sided sign and used on a suitable stand or post. The operational aspects for the use of these signs are given in Part 2: Operations, Section O3.22. A system where a pair of "STOP/GO” signs is operated remotely by radio by staff on site is available.

Manually rotated "STOP/GO" signs should only be used if a risk assessment has determined that the use of remotely controlled "STOP/GO" signs is not appropriate. The reasons for not using the remotely controlled "STOP/GO" signs should be documented in the method statement.

It is important to note that manually rotated "STOP/GO” signs shall not be operated inside the safety zone. If this is not possible, then temporary traffic signals should be used or the road should be closed temporarily to vehicular traffic.

Operators should be competent to control traffic by means of these signs. Part 2: Operations, Section O6.2 deals with the training of operatives.

Manually rotated "STOP/GO" signs may be appropriate at works of short duration or where the works progress along the road quickly. The use of "STOP/GO" signs with single vehicle works is discussed in Part 2: Operations, Section O8.1. The two-way traffic flow should not exceed the figures given in Table 5.5 below for the stated site length. Intermediate values may be interpolated. The site length is measured from the first cone to the last cone of the entry and exit tapers.

This type of control should not be operated over distances greater than 500m and if remotely controlled "STOP/GO” signs are used, the two signs shall be no more than 200m apart. See also Part 2: Operations, paragraph O3.224.

For very short lengths of alternating traffic movement, manually rotated signs at one end or in the middle may suffice, but if the distance exceeds about 20m, the control should be operated at both ends. If a system is used where a pair of "STOP/GO” signs is operated remotely by radio, the operator should be positioned to be in clear view of each set of signs. This equipment needs to be Type Approved.

Manually rotated "STOP/GO” signs may be used where the obstruction continues round a bend, but only if both operators are in radio contact. 127