Article 1 Citation and commencementI1 Northern Ireland This Order may be cited as the Roads (Speed Limit) (No. 4) Order (Northern Ireland) 1997 and shall come into operation on 28th May 1997. Annotations Commencement I1 Art. 1 in operation at 28.5.1997, see art. 1 ← Introduction Article 1 Article 2 →