Dynamic Data Acquisition and Parameters Estimation for Traffic Prediction
Date Issued
2009-09
Date
2009-09
Author(s)
Chang, Tang-Hsien
Abstract
This study proposes a real-time traffic data acquisition system and prediction algorithm. The framework of the system suggests taxi fleets as probe vehicles, combining roadside detectors to collect data from urban networks extensively. Then, mathematical models of “link travel time prediction” and “route flow estimation” are built based on generalized least squares and extended Kalman filter. To verify the prediction capability of the models, this study analyzed the results from grid network simulation. The models are proven well functioning with data processing and calibration. The mean errors of flow estimation on the generated network traffic flows are within 15%.
Subjects
Data collection
Probe vehicles
Real time information
Traffic data
Traffic flow
Travel time
Vehicle detectors
Description
16th World Congress on ITS, Stockholm, Sweden, Sep.20-25, 2009.
Type
conference paper