Modelling urban freight generation using linear regression and proportional odds logit models

Mounisai Siddartha Middela and Gitakrishnan Ramadurai

Transport Policy, 2024, vol. 148, issue C, 145-153

Abstract: Receivers and intermediary establishments typical to urban areas have unique freight behaviour and are understudied, particularly in developing countries. This paper uses establishment-based freight survey data to examine their freight generation patterns in the Chennai metropolitan area, India. Three sets of Simple Linear Regression (SLR) models, three single predictor proportional odds logit models, one multiple linear regression model, and one multiple predictor proportional odds logit model with business size (employment, area, and operational age) and indicators of establishment category as regressors are developed each for both freight production and freight attraction. Partial proportional odds logit models are developed in a few cases to overcome the limitations of proportional odds logit models. The best SLR model varied with the establishment category for freight production and attraction. The establishment area model is the best among single predictor proportional odds logit models. The multiple predictor proportional odds logit models marginally improved the fit over single predictor models. The proportional odds logit model results show that the establishment category has a greater impact on freight generation levels than business size variables. Since earlier studies rarely focused on receivers and intermediary establishments, policymakers may benefit from the developed models and study insights while estimating freight demand and developing freight policies.

Keywords: Freight generation; Partial proportional odds logit models; Receivers; Intermediaries; Establishment surveys (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1016/j.tranpol.2023.12.013

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