"1) Where a sign is a terminal sign and is erected on a principal road within 50 meters of a street lamp lit by electricity, shall, throughout the hours of darkness (a) be continuously illuminated by means of internal or external lighting and may also be illuminated by the use of retroreflective material; or (b) while the street lamp is lit, be continuously illuminated by means of external lighting and shall also by illuminated by the use of retroreflective material."
"For the purposes of that section, illumination, whether by lighting or by the use of reflectors, shall be part of a type or character of a sign"
"Confirmed that the signage application fulfils the requirements of the directions for a 40mph speed limit."