Transportation5.doc - 1 DISTANCE AND TIME BASED ROAD...

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DISTANCE AND TIME BASED ROAD PRICING TRIAL IN DUBLIN O’Mahony, M, Geraghty, D. and Humphreys, I. School of Engineering, Trinity College Dublin, Dublin 2, Ireland. Tel: 353 1 6082084, Fax: 353 1 6773072, Email: [email protected] (Author for correspondence: M. O’Mahony) ABSTRACT The objective of the work was to evaluate the potential user response to distance and time based road pricing of a sample of individuals drawn randomly from a group of volunteers in Dublin. The road use pricing charge levels were selected to match the marginal external costs of car transport i.e. those costs not currently paid by the car user. Such costs include marginal external costs of congestion, air pollution and noise. The project formed part of the EU DGXVII EUROPRICE project where one of the objectives was to evaluate the impact of road use pricing on private transport demand. Estimates of the marginal external costs of car travel had been previously made for Dublin in an EU DGVII project entitled TRENEN II STRAN and the results were used to select the road pricing charges in the trial. The distance travelled and travel time of a particular individual’s work trip were noted. Charges per unit distance and time were applied so that the individual would incur a total charge for their average peak period work trip of 6.4 euro; the average marginal external cost of a peak period trip in Dublin, as estimated by the TRENEN model. Keywords: road pricing, external costs, internalisation, distance and time based pricing 1
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Although the sample of individuals was relatively small, the indications from the results are worthy of note and further investigation on a larger sample. A significant reduction in the number of peak period trips was evident; of the order of 22%, resulting from trip suppression and transfer to other modes. ACKNOWLEDGEMENT The authors wish to thank the EU DGXVII SAVE II Programme for funding the EUROPRICE project. INTRODUCTION Road use pricing has only recently appeared on the transport agenda in Dublin. It has been the subject of a scoping study to evaluate its potential as part of the integrated set of measures, currently under implementation in Dublin. Although the proposed measures including light rail transit, quality bus corridors, stricter parking constraints, environmental traffic cells and enhanced priority for pedestrians are going someway to redress the balance between transportation demand and supply, there still remains a serious shortfall. This is primarily due to unprecedented car ownership and usage levels as a result of increased economic activity in Ireland in recent years. The levels of congestion predicted by the Dublin Transportation Initiative (DTI, 1994) have now been exceeded and hence the search for additional measures to help address the resulting traffic problems in the city.
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  • Fall '17
  • Pricing, Congestion pricing, Road pricing, Traffic congestion

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