Regulatory signs other than those relating to stopping or parking and speed limits need to be directly lit if located in a system of street lighting and within 50 meters of a street lamp.
Terminal speed limit signs (a sign which marks the change in a speed limit) must be lit if located on a principal A road, located in a system of street lighting and within 50 meters of a street lamp.
Certain warning road signs require lighting in all circumstances whilst other warning signs must be lit unless located on a single carriageway, non principal or non trunk road with a speed limit of 30mph or less.
