Yue Liu

Hometown: Qinhuangdao, China

When you started the program? January, 2005

Title of dissertation: An Integrated Optimal Control Model for Urban Freeway Corridor Incident Management

Research Summary: Non-recurrent traffic congestion contributes up to 60 percent of the total freeway delay in the United States. Many of those delays are caused by the capacity reduction due to the lane blockage when incidents occur. In most scenarios, if proper routing and control strategies can be implemented in time, motorists can circumvent the congested segments by detouring through parallel arterials. However, to properly guide such operations, the responsible agency needs to effectively implement strategies at all control points, including ramps, intersections, and etc. To contend with the aforementioned issue, an optimization model and its solution algorithm have been developed for freeway corridor control during incident management. With a parallel arterial as the detour route, the proposed model aims to produce the optimal set of diversion rates from the freeway mainline to relieve the congestion at the incident segment, and concurrently adjust signal timings at the arterial intersections to best accommodate the detour traffic. Extensive numerical tests have demonstrated the potential of the developed model for use in the integrated freeway corridor control system in the future.

What you intend to do when you leave UM? Start an academic career in the university or research institution