Traffic Signal Optimization




i. Joint optimization of connected bus trajectories & traffic signals (JMTR_2301)




ii. Robust time-of-day traffic signal control (JMTR_2204)

Time-of-day (TOD) fixed timing strategy can be adopted in tackling traffic demand fluctuation within the day for urban signalized intersections. This program is initiated to develop methods & models that can generate efficient TOD control plans with robust signal timings for isolated (JMTR_2204) and arterial (JMTR_2305) signalized intersections.



JMTR_2204: Joint optimization of TOD intervals and robust signal timing for isolated intersection.

Keywords: Bi-level optimization, Arrival-departure curve, BLEAQ_II algorithm, SUMO.

[1 | JMTR_2204] Jia, Y., An, C. (*), Lu, Z., & Xia, J. (2023). Joint optimization of time-of-day intervals and robust signal timing for isolated intersection. 23rd COTA International Conference of Transportation Professionals (CICTP2023), July 14-17, 2023, Beijing, China




iii. Optimization of contraflow left-turn lanes (JMTR_2107, JMTR_2020, JMTR_2019)

The contraflow left-turn lane (CLL) design provides a novel approach to alleviate congestion for those signalized intersections with heavy left-turn traffic. This program is initiated to develop models and methods to optimize traffic signal control schemes for isolated, arterial, and network levels of signalized intersections with CLL.



JMTR_2019: Traffic signal optimization for the isolated intersection with CLL

Keywords: queue accumulation polygon, Genetic algorithm.

JMTR_2020: Traffic signal optimization for arterial intersections with CLL

Keywords: Multi-objective sustainability, NSGA-II.

JMTR_2107: Traffic signal optimization for grid-level intersections with CLL

Keywords: Nonlinear programming.

[1 | JMTR_2020] Chen, X. (*), & Jia, Y. (2021). Sustainable traffic management and control system for arterial with contraflow left-turn lanes. Journal of Cleaner Production, 280, 124256.

[1 | JMTR_2107] Chen, X. (*), Jia, Y. (2024). Traffic signal optimization for mitigating pollutant emissions of grid intersections with contraflow left-turn lanes. 103rd Annual Meeting of the Transportation Research Board (TRB 2024 Annual Meeting), January 7-11, 2024, Washington, D.C., United States.


[2 | JMTR_2020] Jia, Y., & Chen, X. (*). (2021). Pre-signal installation optimization to improve the operations of arterial management and control system with contraflow left-turn lanes. The 20th and 21st Joint COTA International Conference of Transportation Professionals (CICTP20-21), December 17-20, 2021, Xi'an, China


[3 | JMTR_2020] Jia, Y., & Chen, X. (*). (2021). Arterial management and control system with contraflow left-turn lanes: An environmentally-friendly perspective. The 20th and 21st Joint COTA International Conference of Transportation Professionals (CICTP20-21), December 17-20, 2021, Xi'an, China


[4 | JMTR_2019] Jia, Y., & Chen, X. (*). (2019). Dynamic Traffic Signal Control Optimization for the Intersection with Contraflow Left-turn Lanes. 19th COTA International Conference of Transportation Professionals (CICTP2019), July 6-8, 2019, Nanjing, China


[5 | JMTR_2019] Jia, Y., & Chen, X. (*). (2019). Traffic Signal Coordination Control Optimization for Reducing Traffic Emissions of Intersection with Contraflow Left-turn Lane. World Transport Convention (WTC2019), June 13-16, 2019, Beijing, China

# Affiliated Program Funding Name Funding # Role Prize Duration
1 JMTR_2020 National Innovation and Entrepreneurship Training Program for Undergraduates of Shaanxi Province S201910710021 PI Third 2019.7-2020.12
S201910710038 PI - 2019.7-2020.12
2 JMTR_2019 National Innovation and Entrepreneurship Training Program for Undergraduates of Shaanxi Province S201910710038 PI - 2019.7-2020.12
The Funded Project for 11th “Challenge Cup” Competition of Chang’an University – Mechanical and Control Group A-P-B-2 PI - 2018.7-2018.12
# Year Competition Prize Sort Affiliated JMTR Program
1 2021 ’Challenge Cup’ Shaanxi Provincial College Student Competition - Academic Works 1st 2nd author JMTR_2020
2 2019 The 9th Transportation Science & Technology Competition of Chang’an University 3rd 1st author JMTR_2019




iv. Sustainable traffic management and control strategy for urban intersections (JMTR_2021)