Factors Affecting Severity of Traffic Crashes in Riyadh City
The primary objective of this paper is to explore factors affecting the severity of road injury crashes in Riyadh city, Kingdom of Saudi Arabia. Crash data for Riyadh city were collected from the Higher Commission for the Development of Riyadh (HCDR) for a period of five years from 1426H to 1429H (roughly corresponding to 2004-2008). Injury crash severity data were classified into three categories: fatal, serious-injury and slight-injury. Two nominal response models have been developed: a standard multinomial logit model (MNL) and a mixed logit model to injury-related crash data. Due to a severe underreporting problem on the slight injury crashes binary and the mixed binary logistic regression models were also estimated for two categories of severity: fatal and serious crashes. The results from both multinomial and binary response models are found to be fairly consistent but the results from the random parameters model seems more reasonable. Age and nationality of the driver, excessive speed, wet road surface and dark lighting conditions and single vehicle crashes are associated with increased probability of fatal crashes. More specifically, the probability of having a fatal crash increases with the age of the driver and Saudi drivers (relative to non-Saudi drivers) are associated with the probability of fatal crashes (relative to serious injury crashes). There is no effect of age in slight injury crashes relative to the serious injury crashes. A crash involving a single vehicle is found to be more severe than a crash involving a multiple vehicles. Based on the findings, a range of countermeasures are proposed to reduce the severity of traffic crashes in Riyadh city.
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Supplemental Notes:
- The DVD lists the title of this paper as: Factors Affecting Severity of Traffic Crashes in Riyadh City, Saudi Arabia.
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Corporate Authors:
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Authors:
- Altwaijri, Saleh
- Quddus, Mohammed A
- Bristow, Abigail
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Conference:
- Transportation Research Board 90th Annual Meeting
- Location: Washington DC, United States
- Date: 2011-1-23 to 2011-1-27
- Date: 2011
Language
- English
Media Info
- Media Type: DVD
- Features: Figures; References; Tables;
- Pagination: 19p
- Monograph Title: TRB 90th Annual Meeting Compendium of Papers DVD
Subject/Index Terms
- TRT Terms: Countermeasures; Crash causes; Crash data; Crash injuries; Crash severity; Fatalities; Human factors in crashes; Injury severity; Multinomial logits; Traffic crashes
- Geographic Terms: Riyadh (Saudi Arabia)
- Subject Areas: Highways; Safety and Human Factors; I80: Accident Studies;
Filing Info
- Accession Number: 01340574
- Record Type: Publication
- Report/Paper Numbers: 11-3368
- Files: TRIS, TRB
- Created Date: May 19 2011 9:00AM