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M4-M40 (Design Standards)

Volume 976: debated on Thursday 20 December 1979

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asked the Minister of Transport, following his Department's decision to modify the declared design standards set out in technical memorandum H6/74 for the proposed M4-M40 section of the M25, whether he will issue an amended version of the memorandum or state in exactly what circumstances roads schemes need not comply with the established standards.

Technical memorandum H6/74 is kept under routine review but, as my right hon. Friend explained in his policy statement on 27 July, when design proposals are determined in a situation of uncertain traffic forecasts, account is taken of the risks of making a wrong decision. Each case is considered on its merits and the best design standards are in the end a matter of judgment on all the available data for each project.