Proactive detection of high collision concentration locations on highways
Chung, Koohong , Jang, Kitae , Madanat, Samer , & Washington, Simon (2011) Proactive detection of high collision concentration locations on highways. Transportation Research Part A : Policy and Practice, 45(9), pp. 927-934.
In previous research (Chung et al., 2009), the potential of the continuous risk profile (CRP) to proactively detect the systematic deterioration of freeway safety levels was presented. In this paper, this potential is investigated further, and an algorithm is proposed for proactively detecting sites where the collision rate is not sufficiently high to be classified as a high collision concentration location but where a systematic deterioration of safety level is observed. The approach proposed compares the weighted CRP across different years and uses the cumulative sum (CUSUM) algorithm to detect the sites where changes in collision rate are observed. The CRPs of the detected sites are then compared for reproducibility. When high reproducibility is observed, a growth factor is used for sequential hypothesis testing to determine if the collision profiles are increasing over time. Findings from applying the proposed method using empirical data are documented in the paper together with a detailed description of the method.
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|Item Type:||Journal Article|
|Keywords:||Hot spot identification, Proactive detection, Continuous risk profile|
|Subjects:||Australian and New Zealand Standard Research Classification > COMMERCE MANAGEMENT TOURISM AND SERVICES (150000) > TRANSPORTATION AND FREIGHT SERVICES (150700) > Road Transportation and Freight Services (150703)|
|Divisions:||Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)|
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > School of Urban Development
|Copyright Owner:||Copyright 2011 Elsevier.|
|Deposited On:||31 Aug 2011 08:59|
|Last Modified:||01 Sep 2011 11:29|
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