The TRB 101st Annual Meeting was held in person in Washington, DC, USA, January 9-13, 2022. The thousands of transportation administrators, practitioners, policy makers, and researchers came to DC and participated in more than 400 workshops, lectern sessions, and poster sessions, as well as nearly 400 committee meetings.
A number of sessions and workshops focus on the spotlight theme for the 2022 meeting: Innovating an Equitable, Resilient, Sustainable, and Safe Transportation System.
A member of our research group, Feng Lei, a second-year master student, was invited to participate in the conference with his excellent paper.
The topic of his paper is Research on the Spatial-Time Division Method and Dynamic Coordinated Control Model of Urban Arterial. This research introduces the method of time division into the green wave coordinated control of urban arterial roads, which the aim of this study is to combine the divisions of time and space, and propose a method of urban arterial road space-time division and its dynamic coordinated control system. The optimal coordination phase difference of adjacent space coordination subarea is obtained through the method of set operation, so that the divided space coordination subareas can be connected; the time is divided by the concept of risk decision-making, and the best time coordination subarea division method is obtained by solving the minimum value of the risk function; in this way, the result of the spatio-temporal subarea division under the time of 24h and space of the urban arterial road can be obtained, and the dynamic coordination control can be carried out by dynamically cutting the spatio-temporal zone. Simulation experiments have proved that the coordinated control model under the space division method is more sensitive and has poor adaptability to tidal traffic; the scope of application of the coordinated control model under the time division method is relatively small, and the acceptable control effect can only be obtained in small range of tidal fluctuations; The coordinated control model under the division method proposed in this study has the advantages of the above two at the same time, and its sensitivity is weak and the scope of application is relatively large.
