Bottleneck Congestion: Differentiating the Coarse Charge

Jasper Knockaert, Erik Verhoef and Jan Rouwendal
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Jasper Knockaert: VU University Amsterdam

No 10-097/3, Tinbergen Institute Discussion Papers from Tinbergen Institute

Abstract: This discussion paper led to a publication in 'Transportation Research Part B: Methodological'

. The traditional bottleneck model for road congestion promotes the implementation of a triangular, fully time varying, charge as the optimal solution for the road congestion externality. However, cognitive and technological barriers put a practical limit to the degree of differentiation real world implementations can handle. The traditional approach to accommodate for this concern has been a step toll, with the single step coarse charge as its simplest case. In this paper we study how efficiency of the coarse charge can be improved by differentiating its level and timing across groups of travellers. We use the traditional bottleneck model to analyse how the coarse charge can be differentiated over two groups of travellers assuming inelastic peak-hour demand. The results of our analysis indicate that differentiating the coarse charge across two groups of travellers considerably improves its efficiency without increasing cognitive effort and decision making costs for the individual traveller. A numeric illustration reveals a welfare gain of 69% of the first best charge, up from 53% for the generic coarse charge. This increase is similar to what is obtained by moving from the coarse charge to a generic two step toll. Once different groups have been defined, one could in fact achieve the same gains by temporal separation of drivers, for example by use of licence plate numbers. The presented charging regime has a considerable degree of flexibility with respect to share of travellers to attribute to each scheme, which further adds to its merits in practical applicability.

Keywords: Traffic congestion; Road pricing; Bottleneck model; Step tolls (search for similar items in EconPapers)
JEL-codes: D62 R41 R48 (search for similar items in EconPapers)
Date: 2010-09-23
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Related works:
Journal Article: Bottleneck congestion: Differentiating the coarse charge (2016)
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Persistent link: https://EconPapers.repec.org/RePEc:tin:wpaper:20100097

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