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Field implementation feasibility study of cumulative travel-time responsive (CTR) traffic signal control algorithm
- Field implementation feasibility study of cumulative travel-time responsive (CTR) traffic signal control algorithm
- Choi, Saerona; Park, Byungkyu Brian; Lee, Joyoung; Lee, Haengju; Son, Sang Hyuk
- DGIST Authors
- Choi, Saerona; Lee, Haengju; Son, Sang Hyuk
- Issue Date
- Journal of Advanced Transportation, 50(8), 2226-2238
- Article Type
- Article; Article in Press
- Adaptive Filters; Adaptive Traffic Signal Control; Commerce; Connected Vehicle Environment; Flow Prediction; Kalman Filter; Kalman Filter Algorithm; Kalman Filter Algorithms; Kalman Filters; Market Penetration; Market Penetration Rate; Model; Operational Efficiencies; Operational Efficiency; Speed; Street Traffic Control; Traffic Signals; Travel Time; Uncertainty Quantification; Vehicles
- The cumulative travel-time responsive (CTR) algorithm determines optimal green split for the next time interval by identifying the maximum cumulative travel time (CTT) estimated under the connected vehicle environment. This paper enhanced the CTR algorithm and evaluated its performance to verify a feasibility of field implementation in a near future. Standard Kalman filter (SKF) and adaptive Kalman filter (AKF) were applied to estimate CTT for each phase in the CTR algorithm. In addition, traffic demand, market penetration rate (MPR), and data availability were considered to evaluate the CTR algorithm's performance. An intersection in the Northern Virginia connected vehicle test bed is selected for a case study and evaluated within vissim and hardware in the loop simulations. As expected, the CTR algorithm's performance depends on MPR because the information collected from connected vehicle is a key enabling factor of the CTR algorithm. However, this paper found that the MPR requirement of the CTR algorithm could be addressed (i) when the data are collected from both connected vehicle and the infrastructure sensors and (ii) when the AKF is adopted. The minimum required MPRs to outperform the actuated traffic signal control were empirically found for each prediction technique (i.e., 30% for the SKF and 20% for the AKF) and data availability. Even without the infrastructure sensors, the CTR algorithm could be implemented at an intersection with high traffic demand and 50-60% MPR. The findings of this study are expected to contribute to the field implementation of the CTR algorithm to improve the traffic network performance. © 2017 John Wiley & Sons, Ltd.
- John Wiley and Sons Ltd
- Related Researcher
Son, Sang Hyuk
RTCPS(Real-Time Cyber-Physical Systems Research) Lab
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