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In search of surrogate safety indicators for vulnerable road users : a review of surrogate safety indicators

Johnsson, Carl LU ; Laureshyn, Aliaksei LU and De Ceunynck, Tim LU (2018) In Transport Reviews
Abstract

Surrogate indicators are meant to be alternatives or complements of safety analyses based on accident records. These indicators are used to study critical traffic events that occur more frequently, making such incidents easier to analyse. This article provides an overview of existing surrogate indicators and specifically focuses on their merit for the analyses of vulnerable road users and the extent to which they have been validated by previous research. Each indicator is evaluated based on its ability to consider the collision risk, which can be further divided into the initial conditions of an event, the magnitude of any evasive action and the injury risk in any traffic event. The results show that various indicators and their... (More)

Surrogate indicators are meant to be alternatives or complements of safety analyses based on accident records. These indicators are used to study critical traffic events that occur more frequently, making such incidents easier to analyse. This article provides an overview of existing surrogate indicators and specifically focuses on their merit for the analyses of vulnerable road users and the extent to which they have been validated by previous research. Each indicator is evaluated based on its ability to consider the collision risk, which can be further divided into the initial conditions of an event, the magnitude of any evasive action and the injury risk in any traffic event. The results show that various indicators and their combinations can reflect different aspects of any traffic event. However, no existing indicator seems to capture all aspects. Various studies have also focused on the validity of different indicators. However, due to the use of diverse approaches to validation, the large difference in how many locations were investigated and variations in the duration of observation at each location, it is difficult to compare and discuss the validity of the different surrogate safety indicators. Since no current indicator can properly reflect all the important aspects underlined in this article, the authors suggest that the choice of a suitable indicator in future surrogate safety studies should be made with considerations of the context-dependent suitability of the respective indicator.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
near-accidents, surrogate indicators, traffic conflicts, Traffic safety, vulnerable road users
in
Transport Reviews
pages
21 pages
publisher
Routledge
external identifiers
  • scopus:85042355548
ISSN
0144-1647
DOI
10.1080/01441647.2018.1442888
language
English
LU publication?
yes
id
d0269df8-dc1c-471b-9499-7861f2ce5ea3
date added to LUP
2018-03-06 07:29:46
date last changed
2018-05-29 11:32:26
@article{d0269df8-dc1c-471b-9499-7861f2ce5ea3,
  abstract     = {<p>Surrogate indicators are meant to be alternatives or complements of safety analyses based on accident records. These indicators are used to study critical traffic events that occur more frequently, making such incidents easier to analyse. This article provides an overview of existing surrogate indicators and specifically focuses on their merit for the analyses of vulnerable road users and the extent to which they have been validated by previous research. Each indicator is evaluated based on its ability to consider the collision risk, which can be further divided into the initial conditions of an event, the magnitude of any evasive action and the injury risk in any traffic event. The results show that various indicators and their combinations can reflect different aspects of any traffic event. However, no existing indicator seems to capture all aspects. Various studies have also focused on the validity of different indicators. However, due to the use of diverse approaches to validation, the large difference in how many locations were investigated and variations in the duration of observation at each location, it is difficult to compare and discuss the validity of the different surrogate safety indicators. Since no current indicator can properly reflect all the important aspects underlined in this article, the authors suggest that the choice of a suitable indicator in future surrogate safety studies should be made with considerations of the context-dependent suitability of the respective indicator.</p>},
  author       = {Johnsson, Carl and Laureshyn, Aliaksei and De Ceunynck, Tim},
  issn         = {0144-1647},
  keyword      = {near-accidents,surrogate indicators,traffic conflicts,Traffic safety,vulnerable road users},
  language     = {eng},
  month        = {02},
  pages        = {21},
  publisher    = {Routledge},
  series       = {Transport Reviews},
  title        = {In search of surrogate safety indicators for vulnerable road users : a review of surrogate safety indicators},
  url          = {http://dx.doi.org/10.1080/01441647.2018.1442888},
  year         = {2018},
}