GRAVITY MODEL CALIBRATION AND IT’S USE IN TRIP DISTRIBUTION FOR AHEMADABAD SOUTH ZONE

The Trip Distribution is the most complex and also important model in the urban transportation planning process. This paper gives a Flow of the framework to calibrate a doubly constrained gravity model of the trip distribution stage for the South Zone - Ahmedabad area based on a Household Information Survey (HIS) and Cordon Line Survey (CLS) which is carried out in 2016-2017. Samples are used for the calibration of gravity model. Calibration is carried out for different trip purposes like home, Service, Business etc. trips using Trans CADsoftware.