Logic-Based Traffic Flow Control for Ramp Metering and Variable Speed Limits—Part 2: Simulation and Comparison

This paper simulates, analyzes, and compares, for two case studies (one synthetic freeway one real-life freeway), the behavior of Logic-Based Traffic Flow Control (LB-TFC), an integrated control strategy Ramp Metering (RM) installations Variable Speed Limits (VSLs) that was proposed derivated in first part work (‘Part 1: Controller’). For study, which presented work, performance LB-TFC is compared with ones obtained optimal solution Mainstream (MTFC) + PI-ALINEA algorithm. Moreover, robustness considered controllers analyzed this study concluding quite robust, specially when comparing MTFC PI-ALINEA. second (a stretch ring-road SE-30 Seville, Spain), data from 10 different days have been used order to simulate using real afternoon peak period. In properly deal a bottleneck dynamically changing number lanes, equations slightly modified study. both studies, provides robust that, most cases, close improves reduction Total Time Spent (TTS) tuning parameters advantages disadvantages LB-TFC.