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Forecasting effects of congestion charges

Jens West (), Maria Börjesson () and Leonid Engelson ()
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Jens West : KTH/Sweco, Postal: Centrum för Transportstudier (CTS), Teknikringen 10, 100 44 Stockholm, Sweden
Maria Börjesson : KTH, Postal: Centrum för Transportstudier (CTS), Teknikringen 10, 100 44 Stockholm, Sweden
Leonid Engelson : KTH, Postal: Centrum för Transportstudier (CTS), Teknikringen 10, 100 44 Stockholm, Sweden

No 2016:9, Working papers in Transport Economics from CTS - Centre for Transport Studies Stockholm (KTH and VTI)

Abstract: This paper performs an ex-post evaluation of the transport model forecast of the effects of the Gothenburg congestion charges, implemented in 2013. We find that the predicted traffic reductions across the cordon and travel time gains were close to those observed in the peak. However, the reduction in traffic across the cordon was under-predicted in off-peak. The design of the charging system implies that the path disutility cannot be computed as a sum of link attributes. The route choice model is therefore implemented as a hierarchical algorithm, including a continuous value of travel time (VTT) distribution. The VTT distribution was estimated from stated choice (SC) data, but had to be adjusted to be consistent with observed outcome. One reason for the discrepancy may be that VTT inferred from SC data does not reveal travellers’ long-term preferences. Another reason may be that apart from distance, travel time and charge there are other factors that determine drivers’ route choice.

Keywords: Congestion charges; Transport model; Validation; Value of time; Volume delay function; Decision support (search for similar items in EconPapers)
JEL-codes: R41 R42 R48 (search for similar items in EconPapers)
Pages: 18 pages
Date: 2016-03-29
New Economics Papers: this item is included in nep-dcm, nep-tre and nep-ure
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