Transport written question – answered at on 9 February 2010.
To ask the Minister of State, Department for Transport what assessment his Department and its agencies have made of the effects on the level of motorway congestion of the implementation of the traffic officer service.
A Highways Agency progress review of traffic officer service in 2007 included an assessment of the quantitative benefits of the service.
The review concluded that overall a periodic delay was about 11 per cent. lower than expected in 2006 compared with 2003. A periodic delay is the element of congestion that the traffic office service is expected to improve through early detection and clearance of incidents on the motorway network.
Although overall delays increased over this period, the element associated with detection and clearance of incidents increased less than would otherwise have been expected.
A Department for Transport review in 2009 stated the 2007 benefits had been reviewed by Department economists and were confirmed as being robust.
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