cases. Where it is considered necessary to locate scheme information boards within the boundary of another Highway Authority, the agreement of the other authority should be obtained, in addition to observing the above procedures.
D4.11.8 Informatory signs are now used by most organisations to provide information about works. However, signs to diagrams 7003.1, 7004 and 7005 are normally used only on major road works on motorway and all-purpose dual carriageway high-speed roads.
D4.12ADVANCE SIGNING FOR MAJOR ROAD WORKS
FUTURE ROAD WORKS
D4.12.1 Signs that provide information of possible future delays at road works or carriageway closures should be accurate to allow drivers to plan their future journeys effectively, so that they can either travel outside the notified period or prepare alternative routeing. Signs should be erected at least two weeks prior to the commencement of the road works or carriageway closures. |f prior to commencement of works the details are changed then the legend should be modified or the sign replaced.
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7003.1
D4.12.2 Starting date and duration of road works. This sign should be located on the near side verge at the start of the future works, if the duration of the works is expected to be greater than one week. The sign should also be considered for works of shorter duration where the temporary traffic management design indicates that there are likely to be moderate or severe delays of 10 minutes or more. The sign should be removed when the works commence. The words "Highways Agency" may be varied to "Welsh Assembly Government", "Transport Scotland", "Department for Regional Development" or the name of the appropriate traffic or roads authority. The Highways Agency logo should be varied accordingly.
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7002.1
D4.12.3 Indication of dates when road works are to take place overnight and delays are to be expected. This sign should be located on the near side verge at the location of the start of the future night-time road works. For convoy working the bottom panel should indicate "Expect delays". For other road works situations the bottom panel should normally indicate the prescribed variant "Delays possible", but where the temporary traffic management design has identified that delays are likely to be severe (greater than 30 minutes) the bottom panel should indicate "Expect delays".
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7002B
D4.12.4 Indication of time and date when a carriageway is to be closed to traffic. This sign should be located on the near side verge at the location of the future carriageway closure. Consideration should also be given to the erection of signs on the adjoining network to advise drivers of the closure.
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