4.6 Article

Traffic Accident Risk Assessment Framework for Qassim, Saudi Arabia: Evaluating the Impact of Speed Cameras

Journal

APPLIED SCIENCES-BASEL
Volume 11, Issue 15, Pages -

Publisher

MDPI
DOI: 10.3390/app11156682

Keywords

accident hazard; accident risk assessment; hotspot identification; road accidents; road safety; speed cameras

Funding

  1. Qassim University [qec-1-3-2017-p-3057]

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Saudi Arabia has a high number of road accidents and fatalities, with speeding identified as a key cause. A traffic accident risk assessment framework was developed and implemented on the Buraydah Ring Road in the Qassim region, showing significant reductions in accident counts through the installation of speed cameras.
Saudi Arabia is one of the countries with the highest number of road accidents and associated fatalities in the world. Speeding has been identified as an important cause of increased traffic accidents, which also aggravate their severity. Road safety improvement strategies are primarily based on the accurate identification of accident hotspots. Installing speed cameras at a network level is an expensive road safety measure, and its spatiotemporal effectiveness should be assessed. In this study, a traffic accident risk assessment framework has been developed and implemented on the 84 km long Buraydah Ring Road in the Qassim region of Saudi Arabia. The selected highway was divided into 42 (x2 km long) segments using the ArcGIS software. A risk scoring scheme was developed to incorporate both the frequency and severity of road accidents. Speed cameras installation at various segments showed a 70% decline in total accident counts, 53% in accidents with property damage, 84% decline in accidents causing injury, and complete absence of accidents with fatalities. The 48% segments were identified as hotspots with risk level >= medium, while the speed cameras installation completely eliminated the hotspots from the study area. The proposed framework can be implemented on major high-speed highways, accommodating high traffic volumes, for hotspot identification and evaluation of various road safety measures in Saudi Arabia and elsewhere.

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