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A disaggregate stochastic freight transport model for Sweden
World Bank.
Statens väg- och transportforskningsinstitut, Samhälle, miljö och transporter, SAMT, Transportekonomi, TEK.ORCID-id: 0000-0001-6401-6536
Statens väg- och transportforskningsinstitut, Samhälle, miljö och transporter, SAMT, Trafikanalys och logistik, TAL.
University of Leeds.
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2018 (Engelska)Ingår i: Transportation, ISSN 0049-4488, E-ISSN 1572-9435, s. 1-26Artikel i tidskrift (Refereegranskat) In press
Abstract [en]

This paper presents estimation results for models of transport chain and shipment size choice, as well as an implementation of the estimated disaggregate models (for two commodity groups), in the context of the national freight transport model for Sweden. The new model is a disaggregate and stochastic (logit) model, whereas the existing Swedish national model is deterministic. One advantage of the new approach is that it bases the underlying behavior of shippers on a stronger empirical foundation (that is micro-data from the Swedish Commodity Flow Survey, CFS). Another advantage is that it overcomes a well-known disadvantage of deterministic models that lead to implausibly large responses to changes in scenario or policy variables. Although estimation and implementation of aggregate stochastic models were done before, in the context of a national freight transport forecasting model, we think this is the first implementation of disaggregate freight transport chain and shipment size models estimated on choice data for individual shipments, certainly in Europe. We carried out a number of model runs with both versions of the implemented model to compare elasticities and found that transport cost and time elasticities for tonne-km are smaller (in absolute values) in the disaggregate stochastic model than in their deterministic counterparts.

Ort, förlag, år, upplaga, sidor
Springer New York LLC , 2018. s. 1-26
Nyckelord [en]
Freight transport, Freight, Size, Mathematical model, Stochastic, Transport operator, Behaviour, Cost, Time, Elasticity
Nationell ämneskategori
Transportteknik och logistik
Forskningsämne
10 Road: Transport, society, policy and planning, 12 Road: Freight transport
Identifikatorer
URN: urn:nbn:se:vti:diva-13537DOI: 10.1007/s11116-018-9856-9Scopus ID: 2-s2.0-85040766219OAI: oai:DiVA.org:vti-13537DiVA, id: diva2:1284160
Tillgänglig från: 2019-01-31 Skapad: 2019-01-31 Senast uppdaterad: 2019-03-15Bibliografiskt granskad

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Abate, MegersaVierth, IngeKarlsson, Rune

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