Calibration Method for Microscopic Simulation Model of Urban Expressway Using Internet Traffic Operation Data

摘要

To develop a calibration method for microscopic simulation model of urban expressway using internet traffic operation data,a practical calibration process is proposed in this study.In this process,a sensitivity analysis was conducted to detect those parameters that impose the most influence on simulation model.Then the Latin Hypercube Sampling Method is used to generate workable amount of parameter sets for simulation run.The parameter set that produces the least discrepancy between the simulation model and the actual condition would be the calibrated parameter values.To demonstrate the feasibility of the proposed method,an example of the Inner Loop Expressway network in Wuxi City is modelled and calibrated using VISSIM.After calibration,the simulation model can accurately represent real-world condition.