This paper presents a simulation modelling approach, used to investigate and quantify the likely benefits of implementing various ATMS and ATIS (automated traffic management and information systems) control strategies on the Smart Corridor in Los Angeles, CA, USA. The INTEGRATION traffic model was used to identify key operation and performance issues, and evaluate ATMS and ATIS concepts under a range of conditions. The most important relevant features of INTEGRATION are discussed. The development of a reference base run is described, that represents typical traffic conditions on the Smart Corridor during the morning peak period. Strategies analysed included: (1) freeway ramp metering; (2) real-time traffic signal optimisation; and (3) route guidance systems. The effects of introducing these strategies, singly or in combination, are examined and discussed. A summary of the preliminary results for these strategy combinations is tabulated for: (1) total travel distance; (2) total trip time; and (3) average speed. The combination of all three strategies produced the best system performance, with rises of 6.35 and 11.6% in average network and freeway speeds, respectively.
Abstract