In rapidly growing economies with limited land space, underground road tunnels are
becoming more prevalent. Before the implementation of large-scale underground road …

Considerable studies have been conducted to investigate the tunnels' traffic safety.
However, the entrance and exit parts of a tunnel are mostly considered symmetrical in …

We have developed a traffic simulation model to quantitatively assess the resilience of a twin-
tube motorway tunnel in the event of traffic accident or fire occurring within a tube. The …

This study complements our previous work with a simultaneous analysis of user safety and
road tunnel resilience. We developed a computational fluid dynamics (CFD) model and …

In the event of an emergency evacuation of a tunnel, variable message signs are one of the
tools available to tunnel operators to communicate with tunnel users and play an important …

Nowadays, environmental conditions inside tunnel have attracting more and more public
attentions. The occurrence of traffic accident will greatly change the spatiotemporal …

Urban vehicular tunnels, generally connected to the ground road network via on-and off-
ramps, are geometrically complex with multiple entrances and exits. They are designed with …

Tunnel congestion is an important safety problem and is often dealt with using disruptive
traffic management strategies, such as closures. The paper proposes an approach to identify …

Given the role of road tunnels in a road network, it is relevant to quantitatively assess their
resilience due to disruptive events. In this respect, the travel speed of traffic flow, as a metric …

In recent years, the large number and long length of long road tunnels with wide structure
dimensions in China attract the attention of the world. The traffic safety problems of long …