In the context of road tunnels, resilience could be described as the ability to keep the tunnel safely available for traffic, during various abnormal situations, like traffic incidents, technical malfunctions, extreme weather conditions, other natural and man-made hazards, or maintenance and refurbishments. In short, resilience is the ability to prepare for, adapt to and recover from abnormal events. The new cross-cutting topic of sustainability with a focus on the operation and maintenance of road tunnels deals with new aspects regarding reduction of energy consumption and use of renewable energy sources for tunnel operation. Also the use of tunnels by active mobility users (pedestrians, cyclists) contributes to more sustainable and greener transport through road tunnels. Special safety aspects as well as international good practices will be discussed.
Presentations in this session will focus on the final Technical Report on Resilience from 2020-2023 Work Cycle as well as the results of the resilience session we had in the International Seminar on Tunnels in China. Additionally first outputs of TC4.4 on sustainable operation of tunnels as well as active mobility users in road tunnels and digitalization of tunnel operation will be presented.