CALIBRATION OF PLATOON DISPERSION MODEL FOR URBAN INTERSECTION OF AHMEDABAD

Abstract

The research in this paper calibrated the platoon dispersion model on the basis of field data collected
from a signalized intersection Kargil petrol pump, Ahmedabad. In the present study we have also discussed about
platoon dispersion. Modelling of dispersion of vehicle platoon is an important consideration for coordinated operation
of closely spaced traffic signals. This analysis is based on video photographic data collected at signalized intersection.
The study of platoon dispersion is to a certain extent associated to driver manners and car following is one key
component of driver behaviour. In this study, field investigation is made by means of videotapes which record traffic
flows at several locations. After collection of video data extraction by any platoon dispersion software. This is used to
accurate data collection from any intersections. To evaluate the effectiveness of the calibration method for the platoon
dispersion model, the downstream flow profiles derived from the calibrated model were compared to the field observed
downstream flow profiles within the platoon dispersion process at the intersection studied. Finally, the influence of the
time step on the calibrated platoon dispersion model was also analyzed. The study results are of great importance for
arterial progression because Robertson's model can depict platoon movements more accurately using the calibrated
values of α.