A macroscopic Traffic Simulation and Optimization (TSAO) model has been developed for regional highway networks. In its latest version, this model uses a macroscopic approach to simulate vehicle platoons through the network, Lighthill's shockwave function to simulate queue propagation, event-scan time management, and a quasi-Newton optimization algorithm. It was applied to the Maryland Eastern Shore network, where heavy recreational traffic creates severe congestion and long queues at bottlenecks on summer weekends. Fourteen alternatives for improvement, including capacity expansion projects and route diversion, were analyzed. Results show the cost-effectiveness of route diversion as a substitute for new construction on intercity networks where high demand peaks are infrequent. The applicability of the TSAO model to large networks with complex demand patterns and insufficient capacity is also demonstrated.
Simulation and Optimization of Traffic Flow on Intercity Networks
1983
288 pages
Report
No indication
English
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