Research on Assessment of Highway Tunnel Operating Safety

The operating safety of highway tunnels is governed by a complex system of people-vehicle-tunnel-environment and influenced by many factors. Its assessment is complex and unique to the specific tunnel. In this paper we discuss the assessment of the operating safety of highway tunnels from three aspects of rating, risk evaluation and resiliency, and propose the concept of operating safety resiliency of highway tunnels. We also summarize prior research in these aspects and analyze advantages and disadvantages of each assessment method.