Suitable lighting and guarding is provided and maintained in accordance with the Traffic Signs Manual: Chapter 8 and Safety at Street and Road Works (Red Book) for the duration of the licence.
Bod digon o olau a gardiau’n cael eu darparu a’u cynnal yn unol â’r Llawlyfr Arwyddion Traffig: Pennod 8 a Diogelwch Gwaith Ffordd a Stryd (Llyfr Coch) tra bydd y drwydded ar waith.