A Multi-level Analysis of the Relationship Between Urban Built Environment and Severe Injury Traffic Crashes
- Authors
- Jang, Kitae; Kim, Kwangho; Kim, Hwan Yong; Kang, Sanghyeok
- Issue Date
- Apr-2018
- Publisher
- 대한토목학회
- Keywords
- Geographic Information System (GIS); multilevel model; poisson regression; traffic collisions; urban built environment
- Citation
- KSCE Journal of Civil Engineering, v.22, no.4, pp 1427 - 1435
- Pages
- 9
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- KSCE Journal of Civil Engineering
- Volume
- 22
- Number
- 4
- Start Page
- 1427
- End Page
- 1435
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/7870
- DOI
- 10.1007/s12205-017-1251-0
- ISSN
- 1226-7988
1976-3808
- Abstract
- This study investigates the relationship between urban built environment and traffic crash occurrences in San Diego County by employing a multi-level Poisson regression model. This model is intended to address the so-called ‘Modifiable Areal Unit Problem’ by properly capturing the spatial correlations that might exist among crash occurrences within or across zones specified for data aggregation. A preliminary inspection based on a geographic information system reveals that the crash occurrences of Traffic Analysis Zones (TAZs) tend to show similar spatial pattern if they belong to the same city. This observation motivated us to incorporate hierarchical random components into a Poisson regression model to complement its systematic components (i.e. explanatory variables) related to socio-demographic characteristics, travel characteristics, or urban built environment. This approach turns out to improve the model’s explanatory power in assessing the relationship between urban built environment and traffic crash occurrences while controlling other variables. A key finding from this study is that crash occurrences of individual TAZs tend to decrease with the expansion of their urban portion. © 2018, Korean Society of Civil Engineers.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > MAJOR IN ARCHITECTURAL DESIGN STUDIES > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/7870)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.