https://www.autocar.co.uk/car-news/slideshow/longest-road-tunnels-world-1
The longest road tunnels in the world | Autocar
Apr 4, 2026 - Join Autocar for a look at the some of the world's greatest underground construction projects
the longest roadin worldtunnelsautocar
https://www.piarc.org/en/activities/PIARC-International-Seminars-Proceedings/PIARC-International-Seminars-2010/paris_January10
Quantitative risk assessment model for dangerous goods transport through road tunnels
quantitative risk assessmentdangerous goods transportroad tunnelsmodel
https://www.piarc.org/en/activities/PIARC-International-Seminars-Proceedings/PIARC-International-Seminars-2006/sanjuan_March06
Safety and Operation of Road Tunnels
road tunnelssafetyoperation