Sulistyorini, Rahayu and Tamin, Ofyar Z and sjafruddin, ade (2009) The Development of Combined Gravity-Multinomial Logit Estimated from Traffic Count Under Equilibrium Condition. In: Proceeding of 8th International Conference of Eastern Asia Society for Transportation Studies, 2009, 16-19 November 2009, Surabaya, Indonesia.


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The model examined was the Gravity (GR) model combined with the MultiNomial-Logit (MNL) model. Non-Linear-Least- Squares (NLLS) estimation methods were used to calibrate the parameter of the combined model. Three of the stages of this process (four steps model), trip distribution, modal split and traffic assignment, combine to estimate expected O-D demands, and as such, are of relevance to this research. Iterative solution algorithms, that are modifications of the Newton Raphson and Elimination Gauss-Jourdan techniques, are proposed to solve each of the model formulations. The procedure described here assumes that the observed network is at equilibrium assignment condition. In other words, the observed link flows and travel times represent the (observed) equilibrium conditions. The objective of the solution approach is to find an O-D matrix such that when this matrix is assigned to the network, the resulting O-D travel times will be equal to the observed O-D travel times.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User: RAHAYU SUL
Date Deposited: 22 Feb 2021 02:36
Last Modified: 22 Feb 2021 02:36

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