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Movement generation and trip distribution for freight demand modelling applied to city logistics
Gentile, Guido
Vigo, Daniele
2013
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.
Series
54
Publisher
EUT Edizioni UniversitĂ 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
Languages
en
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