Abstract

The safety of a road tunnel depends not only on its design and operation, but also on the users’ knowledge of the"br" tunnel. Therefore, in France, the Centre for Tunnel Studies (CETU) conducted in 2004 a qualitative survey focused"br" on tunnel users’ knowledge of the tunnel and its equipment. Following this survey, several actions were"br" implemented and in order to measure their impact, a similar survey was conducted in 2015. It highlighted an"br" improved knowledge of existing safety equipment especially of the blue marker lights on side walls designed to"br" help drivers maintain an appropriate safety distance."br" In order to check this knowledge of the blue marker lights, CETU designed a regulatory road sign and tested its"br" installation at the entrance to the Foix tunnel in the Occitanie region. At the end of 2016, approximately 600 users"br" were questioned on their understanding of the road sign in a survey, which was conducted via Internet and via a"br" questionnaire hand-delivered to participants’ homes.