http://www.legislation.gov.uk/uksi/1989/447/section/3/madeThe M1 Motorway (Stourton Interchange to Dewsbury Road Section) and Connecting Roads Scheme 1989Roads and highwaysKing's Printer of Acts of Parliament2011-07-04HIGHWAYS, ENGLAND AND WALES3These special roads shall become trunk roads on the date on which this Scheme comes into force.