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Title: Movement generation and trip distribution for freight demand modelling applied to city logistics
Authors: Gentile, Guido
Vigo, Daniele
Keywords: estimation of freight O - D matricescategory index model with hierarchygravity mo del with toursurban delivery of goods
Issue Date: 2013
Publisher: EUT Edizioni Università di Trieste
Source: Gentile, G., Vigo, D. (2013) Movement generation and trip distribution for freight demand modelling applied to city logistics, European Transport \ Trasporti Europei, 54, Paper n° 6
Series/Report no.: 54
Abstract: The quantification of the freight movements disaggregated by supply chain occurring in each traffic zone for the urban delivery of goods and that of the corresponding Origin - Destination trip tables is essential to evaluate the effects of any city logistic poli cy in terms of vehicle congestion and polluting emissions through the assignment of truck flows on the road network. In this paper we propose two innovative demand models: the first one for movement generation, the second one for trip distribution. The mov ement generation is addressed through an extension of the category index model, which takes into account the hierarchy in the classification system of the economic activities, thus avoiding aggregating the many existing classification codes into pre - specif ied groups. The trip distribution is addressed through an adaptation of the gravity model, which takes into account that deliveries are organized in tours. This approach has been successfully applied to the case of Emilia - Romagna Region in Italy, where an extensive campaign of surveys has permitted to calibrate both models for several towns and cities with various dimensions and vocations.
ISSN: 1825-3997
Appears in Collections:European Transport / Trasporti Europei (2013) 54

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