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TRRL weighs on move
Page 6
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• The principle of using controversial weigh-in-motion equipment in the fight against over-laden lorries has been approved by the Transport and Road Research Laboratory. But the TRRL admits: "The accuracy of such systems is at present poor."
In a new report, it warns that the present system of routine weight checks and random surveys is expensive, limited to a few sites where HGVs can be stopped safely, restricted to daytime and easy for drivers to avoid.
Automatic systems could provide 24-hour information on overloading cheaply and without stopping vehicles. The reports says weigh-in-motion systems could be used to point enforcement officers to the best time and places to detect overloaded vehicles, and could also be linked to unattended systems to stop over-weight lorries crossing weak bridges.
Having supported the principle, TRRL scientists are now working to improve the accuracy of the systems.
El Evidence of truck drivers breaking weight limits on Whitby's 80-year-old harbour swingbridge is being collected by the town's Chamber of Trade. The bridge has suffered a series of breakdowns despite a 2400,000 overhaul three years ago.