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Opening address K CLARKE
The contribution of research A SILVERLEAF
Standards specifications and design H Wl LLIAMS A
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accidents all-purpose roads assessment axle loads benefits borrow pits bridge British motorways carriageway carried cars central reserve changes civil engineering Committee concrete congestion considerable construction contract contractor cost decision delays Department of Transport drainage drivers earthworks economic effects environment environmental expenditure factors falsework flows forecasting French drains future hard shoulders heavy goods vehicles highway HMSO impact important improved increased industry involved land lane limited London M4 motorway maintenance major materials ment methods mile/h miles million motor motorway investments motorway network motorway programme motorway system noise particularly pavement period planning police possible present problems procedures public inquiry reduce regional result road programme Road Research Laboratory routes rural safety schemes skid resistance specifications speed standard axles structures surface tender tion traffic forecasts Transport and Road TRRL trunk road urban areas urban motorways users