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Towards exposure-based time-space pedestrian crash analysis in facing the challenges of ageing societies in Asia

Towards exposure-based time-space pedestrian crash analysis in facing the challenges of ageing... The global ageing phenomenon leads to major road safety concerns. This paper represents a pioneer but preliminary attempt to propose an exposure-based time-space approach to examine elderly pedestrians' crashes in a district in Hong Kong. A disaggregate Geographical Information Systems (GIS)-based three-dimensional (3D) time-space framework is used to relate individual travel activities with crash patterns. In an attempt to integrate the activity-based and spatial crash analysis models, this study combines three rich relational databases to better describe elderly pedestrian behavior in a road network. In the model calibration, space-time paths of the elderly were first generated, they were then superimposed on crash data which were snapped to the link-node system in a 3D environment, with the additional dimension of the time to supplement the traditional 2D analysis. Finally, one- and four-hourly snapshots of vehicle-pedestrian crashes involving the elderly within the district are derived to identify possible associations between the space-time slices of crash frequency and crash risk. The results show that the district's center during the afternoon rush hours was the most hazardous for elderly pedestrians. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Geographer Taylor & Francis

Towards exposure-based time-space pedestrian crash analysis in facing the challenges of ageing societies in Asia

Asian Geographer , Volume 30 (2): 21 – Dec 1, 2013
21 pages

Towards exposure-based time-space pedestrian crash analysis in facing the challenges of ageing societies in Asia

Abstract

The global ageing phenomenon leads to major road safety concerns. This paper represents a pioneer but preliminary attempt to propose an exposure-based time-space approach to examine elderly pedestrians' crashes in a district in Hong Kong. A disaggregate Geographical Information Systems (GIS)-based three-dimensional (3D) time-space framework is used to relate individual travel activities with crash patterns. In an attempt to integrate the activity-based and spatial crash analysis models,...
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Publisher
Taylor & Francis
Copyright
© 2013 Hong Kong Geographical Association
ISSN
2158-1762
eISSN
1022-5706
DOI
10.1080/10225706.2012.735436
Publisher site
See Article on Publisher Site

Abstract

The global ageing phenomenon leads to major road safety concerns. This paper represents a pioneer but preliminary attempt to propose an exposure-based time-space approach to examine elderly pedestrians' crashes in a district in Hong Kong. A disaggregate Geographical Information Systems (GIS)-based three-dimensional (3D) time-space framework is used to relate individual travel activities with crash patterns. In an attempt to integrate the activity-based and spatial crash analysis models, this study combines three rich relational databases to better describe elderly pedestrian behavior in a road network. In the model calibration, space-time paths of the elderly were first generated, they were then superimposed on crash data which were snapped to the link-node system in a 3D environment, with the additional dimension of the time to supplement the traditional 2D analysis. Finally, one- and four-hourly snapshots of vehicle-pedestrian crashes involving the elderly within the district are derived to identify possible associations between the space-time slices of crash frequency and crash risk. The results show that the district's center during the afternoon rush hours was the most hazardous for elderly pedestrians.

Journal

Asian GeographerTaylor & Francis

Published: Dec 1, 2013

Keywords: Elderly; pedestrian crash; activity-based approach; pedestrian exposures

References