Developing an innovative policy approach for improving urban road safety: The case of Intelligent Speed Adaptation (ISA)

B. Agusdinata, V. A.W.J. Marchau, W. E. Walker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Road safety is high on the agenda of transport policymakers. When looking for policies to improve road safety, more focus should be placed on urban roads, since the accident risk is greater for urban roads than for other types of roads. One of the major contributing factors to urban road accidents is speed. Intelligent Speed Adaptation (ISA) uses an in-vehicle device to monitor local speed restrictions and support the driver in adjusting his driving speed to the posted maximum speed. The technological feasibility and potential safety impacts of ISA have been documented. Policymakers and others are now exploring possibilities for implementing ISA on a large scale. Policymaking, however, is restrained by uncertainties about the real-world impacts of ISA implementation. Concerns about acceptance among drivers, technological failures, unexpected costs, etc., are causing delays in ISA implementation. In this paper, we describe an innovative policy analysis approach that can take account of these uncertainties. In particular, using this approach, the various possible uncertainties surrounding ISA implementation are modelled and explored in-depth. Using minimization of maximum regret as a criterion, the effectiveness of six alternative ISA policies is shown across a wide spectrum of plausible futures. Our initial findings offer some counter-intuitive results concerning uncertainties related to the effectiveness of ISA policies. For example, policies to have the ISA system installed in more vehicles do not necessarily lead to a higher reduction in accident risk. We also show how to deal with uncertainty about the relationship between speed and accident risk.

Original languageEnglish (US)
Title of host publication11th International Conference on Urban Transport and the Environment in the 21st Century, Urban Transport 2005
Pages745-755
Number of pages11
StatePublished - Dec 1 2005
Externally publishedYes
Event11th International Conference on Urban Transport and the Environment in the 21st Century, Urban Transport 2005 - Algarve, Portugal
Duration: Apr 12 2005Apr 14 2005

Publication series

NameWIT Transactions on the Built Environment
Volume77
ISSN (Print)1743-3509

Other

Other11th International Conference on Urban Transport and the Environment in the 21st Century, Urban Transport 2005
CountryPortugal
CityAlgarve
Period4/12/054/14/05

Keywords

  • Exploratory analysis
  • Intelligent speed adaptation (ISA)
  • Policy analysis
  • Policy robustness
  • Urban road safety

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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