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Defining and applying surrogate safety measures and behavioural indicators through site-based observations

de Ceunynck, Tim LU (2017)
Abstract
This dissertation looks into surrogate safety measures and behavioural indicators that are collected through site-based observations. Surrogate safety measures are defined as measurements that are used to describe the relationship between two road users in a traffic event for the purpose of quantifying the crash probability and/or the potential crash severity in a meaningful way. The main goal of this dissertation is to contribute to filling methodological knowledge gaps in site-based observations of surrogate safety measures and road users’ behaviour, and to investigate how such observations can be used to study road safety issues for which crash data appear to be less suitable.
The dissertation includes a scoping review that... (More)
This dissertation looks into surrogate safety measures and behavioural indicators that are collected through site-based observations. Surrogate safety measures are defined as measurements that are used to describe the relationship between two road users in a traffic event for the purpose of quantifying the crash probability and/or the potential crash severity in a meaningful way. The main goal of this dissertation is to contribute to filling methodological knowledge gaps in site-based observations of surrogate safety measures and road users’ behaviour, and to investigate how such observations can be used to study road safety issues for which crash data appear to be less suitable.
The dissertation includes a scoping review that investigates in a comprehensive and quantitative way how surrogate safety measures have been applied so far. The theoretical framework and first implementation of a new indicator, Extended Delta-V, are presented. Three case studies have been conducted that aim to further investigate how site-based observations of road users’ behaviour and interactions could supplement or even replace surrogate safety measures, especially when severe events take place infrequently and/or dispersed. The case studies relate to: 1) the safety of bicyclists on bus lanes shared with bicyclists, 2) drivers’ behavioural adaptions caused by wind turbines alongside the roadway, and 3) differences in drivers’ interactions at right-hand priority intersections and priority-controlled intersections. The case studies provide some safety-relevant insights into topics that have rarely been addressed in scientific literature before. Policy and design implications are discussed.
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Please use this url to cite or link to this publication:
author
supervisor
opponent
  • Dr Ekman, Lars, Swedish Transport Administration (Trafikverket), Kristianstad
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Surrogate safety measures, behavioural indicators, traffic safety, site-based observations, traffic conflicts, traffic conflict techniques, road user interactions
pages
185 pages
publisher
Department of Technology and Society, Lund University
defense location
Hasselt University, Campus Diepenbeek, Agoralaan building D, H3, Diepenbeek, Belgium.
defense date
2017-09-29 16:00
ISBN
9789089130587
9789089130587
language
English
LU publication?
yes
id
7f7f7952-2b51-40ca-bb33-a551427ed6e8
date added to LUP
2017-08-27 14:00:51
date last changed
2017-09-05 15:01:49
@phdthesis{7f7f7952-2b51-40ca-bb33-a551427ed6e8,
  abstract     = {This dissertation looks into surrogate safety measures and behavioural indicators that are collected through site-based observations. Surrogate safety measures are defined as measurements that are used to describe the relationship between two road users in a traffic event for the purpose of quantifying the crash probability and/or the potential crash severity in a meaningful way. The main goal of this dissertation is to contribute to filling methodological knowledge gaps in site-based observations of surrogate safety measures and road users’ behaviour, and to investigate how such observations can be used to study road safety issues for which crash data appear to be less suitable.<br/>The dissertation includes a scoping review that investigates in a comprehensive and quantitative way how surrogate safety measures have been applied so far. The theoretical framework and first implementation of a new indicator, Extended Delta-V, are presented. Three case studies have been conducted that aim to further investigate how site-based observations of road users’ behaviour and interactions could supplement or even replace surrogate safety measures, especially when severe events take place infrequently and/or dispersed. The case studies relate to: 1) the safety of bicyclists on bus lanes shared with bicyclists, 2) drivers’ behavioural adaptions caused by wind turbines alongside the roadway, and 3) differences in drivers’ interactions at right-hand priority intersections and priority-controlled intersections. The case studies provide some safety-relevant insights into topics that have rarely been addressed in scientific literature before. Policy and design implications are discussed.<br/>},
  author       = {de Ceunynck, Tim},
  isbn         = {9789089130587},
  keyword      = {Surrogate safety measures,behavioural indicators,traffic safety,site-based observations,traffic conflicts,traffic conflict techniques,road user interactions },
  language     = {eng},
  month        = {09},
  pages        = {185},
  publisher    = {Department of Technology and Society, Lund University},
  school       = {Lund University},
  title        = {Defining and applying surrogate safety measures and behavioural indicators through site-based observations},
  year         = {2017},
}