Hoardings and Heras Fencing should be lit at all times from half an hour before sunset until half an hour after sunrise unless otherwise agreed with the Highway Inspector.
Bod Hysbysfyrddau’n cael eu goleuo trwy'r adeg o hanner awr cyn y machlud tan hanner awr ar ôl codiad yr haul oni bai y cytunir fel arall gyda'r Arolygydd Priffyrdd.