The lighting of traffic tunnels. A paper presented at a meeting of the Shanghai Association for Science and Technology SAST, October 9 and October 12, 1987.

The major problems for the lighting of tunnels concentrate in the daytime lighting for the first part of the tunnel directly following the entrance. The steady state theory of tunnel lighting as developed by Schreuder and Narisada, and the straylight- theory, developed by Adrian, are discussed. These two approaches are often described as conflicting. They are, however, conjoint.Recommendations for the lighting of tunnels are presented.