http://www.legislation.gov.uk/nisr/2003/112/article/2/madeM1/A1 (Sprucefield Interchange) Order (Northern Ireland) 2003Roads and highwaysRoad buildingGovernment Printer for Northern Ireland2016-09-07ROADS This Order provides that approximately 2866 metres of new slip roads described in Part I of the Schedule and more particularly delineated and coloured green on the map shall become special roads subject to motorway traffic restrictions and be part of the Belfast-Ballygawley-Londonderry Trunk Road T3. 2 The roads described in Part I of the Schedule shall become special and trunk roads and be part of the Belfast-Ballygawley-Londonderry Trunk Road T3.