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- Title
DynaTAM: an online algorithm for performing simultaneously optimized proactive traffic control for freeways.
- Authors
Fang, Jie; Hadiuzzaman, Md.; Yin, Elena; Qiu, Tony Z.
- Abstract
Modern proactive control algorithms can perform real-time traffic state prediction and help determine control plans for active traffic control measures, such as ramp metering (RM) and variable speed limit (VSL). In this study, a control algorithm, DynaTAM (Dynamic Analysis Tool for Active Traffic Demand Management), is proposed for prediction-based, integrated optimization control. DynaTAM considers the correlations between the implemented control measures and determines the control plan for both RM and VSL at the same stage of optimization. The algorithm framework possesses a candidate control plan generator, which reduces the computational load of future optimizations and eliminates much of the uncertainty in the system performance. A field-data-based simulation study with different control scenarios is conducted to evaluate the performance of DynaTAM. The DynaTAM control algorithm is shown to not only effectively perform integrated and coordinated control using both RM and VSL, but also significantly improve the efficiency of traffic operations during peak hours.
- Subjects
CANADA; TRAFFIC engineering; RAMP metering (Traffic engineering); VARIABLE speed limits; SIMULATION methods &; models; ONLINE algorithms; EXPRESS highways
- Publication
Canadian Journal of Civil Engineering, 2014, Vol 41, Issue 4, p315
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/cjce-2013-0164