The World Road Association – PIARC recently published a Report titled “Good Practices in Maintenance and Traffic Operation of Heavily Trafficked Urban Road Tunnels“. This report makes amends in detailing the topic of maintenance and operation from traffic management, to design and renovation. Maintenance and operation of heavily trafficked urban road tunnels is one of, if not the most outstanding challenge for authorities, owners, operators and designers of tunnels. Challenges and good practices on traffic management, maintenance, incident management, communication management, the reduction of nuisance and initial design of heavily trafficked urban road tunnels can be found in this report.