Analysis of traffic accidents at urban intersections in Riyadh

Area of Science:

• Traffic Safety
• Urban Planning
• Accident Analysis

Background:

• Intersection accidents constitute approximately 50% of annual traffic incidents in Riyadh, Saudi Arabia.
• Over half of these intersection accidents are severe, resulting in injuries or fatalities.
• A significant portion of traffic accidents in Riyadh occur at non-intersection sites as well.

Purpose of the Study:

• To investigate the characteristics of traffic accidents at both intersection and non-intersection sites in Riyadh.
• To analyze the nature of these accidents to identify primary causes and contributing factors.
• To inform potential remedies and suggest future research directions for traffic accident mitigation.

Main Methods:

• A systematic random sample of 1774 reported traffic accidents from 1996-1998 was analyzed.
• Data included 651 severe accidents and 1123 property-damage-only (PDO) accidents.
• Conditional probability and contingency table analyses were employed for statistical inference.

Main Results:

• Improper driving behavior is identified as the leading cause of accidents at signalized urban intersections in Riyadh.
• Key contributing factors include running red lights and failure to yield the right-of-way.
• Accidents at non-intersection sites also warrant further investigation into their specific causes and characteristics.

Conclusions:

• There is an immediate necessity to reassess current intersection geometry and traffic control devices in Riyadh.
• Public education campaigns focusing on safe driving practices are crucial for accident prevention.
• Enhanced law enforcement strategies are required to address prevalent unsafe driving behaviors.