%0 Journal Article
%T Bimodal traffic evacuation management for road tunnels considering social fairness: CTM-based model
%J Journal of transportation engineering, Part A: Systems
%D 2023
%A Yin, Ruyang
%A Zheng, Nan
%A Zhou, Zhen
%V 149
%N 7
%P e04023058-e04023058
%X This study focuses on vehicle and pedestrian traffic management in freeway tunnels during emergencies such as fire propagation caused by traffic accidents. Such accidents can result in traffic breakdowns in a short time and a limited space, leading to severe health and safety issues. This study establishes a parsimonious bimodal tunnel evacuation management strategy that can provide real-time evacuation instructions by combining real-world historical traffic data and a cell transmission model (CTM). To exploit the evacuation capability of road tunnels with both vehicle cross and passenger passages, an equivalent cellular traffic network of a road tunnel and its escape facilities is first developed for bimodal evacuation. Simultaneously considering efficiency and social fairness in an emergency evacuation, a risk evaluation function is initially established and embedded in a system optimal objective function. The rationale of the proposed compact system models and the mechanism of effective traffic management measure generation is validated based on a real freeway tunnel emergency happened in Melba and Mullum-Mullum tunnels in Melbourne, Australia. The results suggest that the proposed CTM-based model has twinned the bimodal traffic characteristics and the flexibility to balance the evacuation efficiency and social fairness consideration in road tunnels under emergency conditions.<p /> <p>Language: en</p>
%G en
%I American Society of Civil Engineers
%@ 2473-2907
%U http://dx.doi.org/10.1061/JTEPBS.TEENG-7899