http://www.legislation.gov.uk/nisr/1996/118/schedule/paragraph/54/made
Roads (Speed Limit) (No. 4) Order (Northern Ireland) 1996
Speed limits
Vehicles
Traffic management
Government Printer for Northern Ireland
2013-06-13
ROAD TRAFFIC AND VEHICLES
This Order reduces from 30 miles per hour to 20 miles per hour the speed limit on the restricted roads specified in the Schedule (Article 2).