ANALYSIS OF DETERRENCE FUNCTION VARIATIONS FOR TRIP DISTRIBUTION USING DOUBLY CONSTRAINED GRAVITY MODEL

• Main Author: ZAKKY ANWAR (NIM : 10214053), MUHAMMAD
• Format: Final Project
• Language: Indonesia
• Subjects: Fisika
• Online Access: https://digilib.itb.ac.id/gdl/view/29378
• Institution: Institut Teknologi Bandung

In urban planning, one of the most important aspect of it is transportation system. In that transportation system, spatial interaction or trips berween zones will affect the resulted transportation system. For this era, those trips are studied using a modelling method such as four step model (FSM). In that model trip distribution ,as one of its step, have an aim to form a distribution of trips on a region which is represented by a trip matrix called O/D matrix. On making the trip distribution, one of the commonly used method is gravity model in which there are a form that consideres the entrophy concept by adding 2 constraint factors into the model which is then called as doubly constrained gravity model. That model will distribute trips between zones in O/D matriks by calculating the variable of the amount of origin trips, destnation trips, and a spatial separation or generalized cost which is represented by a function called deterrence function. In this report, 3 type of deterrence function will be used which is exponential function, power function, and gamma function on the city of London which are divided into 32 zones to see which type of deterrence function will produce the best result to represent the trip between zones. Beside making the O/D matrix as the final result, the trip distribution will also be represented in a form of graph network where trip distribution is categorized as weighted network.