The Level Crossing (Coleraine (Bushmills Road)) Order (Northern Ireland) 2016 No. 404

SCHEDULE 1 PARTICULARS OF THE BARRIERS, LIGHTS, TRAFFIC SIGNS AND OTHER DEVICES

12.  An audible warning device shall be provided on or adjacent to each traffic light signal post. Facilities shall be provided to reduce the sound output of these devices and any reduced sound output shall operate to suit local day and night conditions.