Evaluation Study of the Median Markings in Undivided Highway Tunnels

This paper details research undertaken by the simulation laboratory at Faculty of Transportation, Kunming University of Science and Technology. The aim of this research is to compare the relative effectiveness of three kinds of median markings in undivided highway tunnels. The sample of the tunnels was selected from a real road in a mountainous area in Yunnan province as a test course and was reconstructed by computers on the driving simulator. Forty subjects participated in the experiment and the data were collected from the experiments. The study found consistently superior results for the Warning poles that can fall down and resume set on the centre of the undivided highway tunnel in comparison to common road markings and the enhanced visibility road markings in various measures of driving behavior. Questionnaires also give a higher evaluation for the Warning poles.