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The New Italian Road Code and the virtues of the ‘shame lane’

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Author Info
Matteo Richiardi (LABORatorio Revelli Centre for Employment Studies)

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Abstract

In July 2003 a new Road Code was approved by the Italian parliament. Among many reforms whose validity is not questioned here, the new law states that on three-lane motorways the right lane should not be reserved anymore to slow vehicles alone. As in two-lane roads, all vehicles must now drive on the right lane, as long as it is not occupied by other vehicles. The model developed in this paper casts doubts on the validity of such a change, suggesting that the old rule generally performs better, in terms of number of accidents, average speed and motorway capacity, than the new one. This conclusion is shown to be extremely robust to refinements of the main assumptions concerning driving attitudes and the stochastic arrival of accidents.

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File URL: http://129.3.20.41/eps/comp/papers/0401/0401002.pdf
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Paper provided by EconWPA in its series Computational Economics with number 0401002.

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Length: 21 pages
Date of creation: 07 Jan 2004
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Handle: RePEc:wpa:wuwpco:0401002

Note: Type of Document - pdf; prepared on WinXP; pages: 21
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Web page: http://129.3.20.41

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Keywords: Traffic; Simulation; Italian Road Code;

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Find related papers by JEL classification:
C8 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs

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References listed on IDEAS
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  1. Arnott, Richard & de Palma, Andre & Lindsey, Robin, 1990. "Economics of a bottleneck," Journal of Urban Economics, Elsevier, vol. 27(1), pages 111-130, January. [Downloadable!] (restricted)
    Other versions:
  2. Vickrey, William S, 1969. "Congestion Theory and Transport Investment," American Economic Review, American Economic Association, vol. 59(2), pages 251-60, May. [Downloadable!] (restricted)
  3. C. Robin Lindsey & Erik T. Verhoef, 1999. "Congestion Modelling," Tinbergen Institute Discussion Papers 99-091/3, Tinbergen Institute. [Downloadable!]
  4. Erik T. Verhoef, 2002. "Inside the Queue," Tinbergen Institute Discussion Papers 02-062/3, Tinbergen Institute, revised 27 May 2003. [Downloadable!]
  5. Gipps, P. G., 1986. "A model for the structure of lane-changing decisions," Transportation Research Part B: Methodological, Elsevier, vol. 20(5), pages 403-414, October. [Downloadable!] (restricted)
  6. Alvin E. Roth & Elliott Peranson, 1999. "The Redesign of the Matching Market for American Physicians: Some Engineering Aspects of Economic Design," American Economic Review, American Economic Association, vol. 89(4), pages 748-780, September. [Downloadable!] (restricted)
    Other versions:
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