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Title:

Factors Affecting Severity of Traffic Crashes in Riyadh City

Accession Number:

01340574

Record Type:

Component

Abstract:

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.

Supplemental Notes:

The DVD lists the title of this paper as: Factors Affecting Severity of Traffic Crashes in Riyadh City, Saudi Arabia.

Monograph Accession #:

01329018

Report/Paper Numbers:

11-3368

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Altwaijri, Saleh
Quddus, Mohammed A
Bristow, Abigail

Pagination:

19p

Publication Date:

2011

Conference:

Transportation Research Board 90th Annual Meeting

Location: Washington DC, United States
Date: 2011-1-23 to 2011-1-27
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (3) ; References (37) ; Tables (3)

Geographic Terms:

Riyadh (Saudi Arabia)

Subject Areas:

Highways; Safety and Human Factors; I80: Accident Studies

Source Data:

Transportation Research Board Annual Meeting 2011 Paper #11-3368

Files:

TRIS, TRB

Created Date:

Feb 17 2011 6:29PM