Lighting for maintenance and emergency evacuation in the rail tunnels requires special consideration: it is an inhospitable, often corrosive environment, with limited access to survey or install. Tunnels can vary in size based on their age and construction, resulting in variations in width, height, and mounting positions for luminaires. Any lighting products used must meet stringent Network Rail and operator material standards.
Refer to RIS-7702-INS for recommended lux levels.
