Key Takeaways:
- Euclid Avenue and D Street is the most dangerous intersection in Ontario.
- Ontario’s intersection crash rate is 23.68% lower than the average of California cities.
- The city’s fatal injury rate for intersection crashes is 13.68% lower than the cross-city average and the serious injury rate is 27.72% lower than the cross-city average.
Ontario, a growing city in the Inland Empire, serves as a key transportation and commercial center in Southern California. With its location near major highways, an international airport, and expanding residential developments, the city sees a steady flow of daily traffic. As Ontario continues to develop, understanding traffic patterns and identifying high-risk intersections provides valuable insight into road safety.
To highlight areas with frequent collisions, we analyzed crash data from the Statewide Integrated Traffic Records System (SWITRS), which was cleaned and geocoded by the Transportation Injury Mapping System (TIMS) from 2020 to 2024. This study focuses on the 10 most dangerous intersections in Ontario, examining crash frequency, severity, and how the city’s intersection-related collisions compare to other major areas in California.
It’s important to note that this analysis only includes crashes where an injury was reported or suspected. Minor incidents without reported injuries are not recorded in TIMS and, therefore, are excluded from our dataset. By identifying these intersections, we aim to provide a clearer picture of where crashes are most concentrated and how they fit into broader traffic trends.
Ranking Intersections by Danger Score
The intersections listed below are ranked by their danger score, which accounts for the total number of crashes in a five-year period, with more severe crashes carrying additional weight in the final score. This metric helps identify the intersections with the highest risk and the greatest need for safety improvements.
In Ontario, the intersection of Euclid Avenue and D Street stands at the top with 16 crashes and a danger score of 44. Its high danger score reflects not only the number of collisions but also the severity of those incidents. Following closely behind are two intersections tied for second place: San Antonio Avenue and State Street and San Antonio Avenue and Holt Boulevard, both with 28 and 16 crashes, respectively, and a danger score of 38.
Ontario’s Intersection Crash Rate vs. Other California Cities
In this section, we analyze how Ontario’s intersection crash rate compares to those of other cities across California.
While the average intersection crash rate across all studied California cities is 37.16%, Ontario’s rate of 28.37% is approximately 23.68% lower.
Crash Severity Distribution
We now present a breakdown of intersection crashes by severity, with categories including fatal, serious, minor, and possible injuries.
Ontario’s intersection fatality rate comes in at 2.02%, making it 13.68% lower than the average of 2.34%. Serious injuries are also less frequent, with a rate of 6.65%, which is 27.72% below the 9.20% average.
As for other injury categories, minor injuries represent 33.35% of crashes, while possible injuries make up 57.98%.
Conclusion
Ontario’s intersection crash data presents a positive outlook in comparison to other major California cities. The city’s intersection crash rate is significantly lower than the statewide average, and its fatal and serious injury rates are notably reduced as well. Despite the city’s steady growth and heavy traffic flow, the overall lower severity of intersection crashes points to the effectiveness of current safety measures. However, areas like Euclid Avenue and D Street, which top the list of dangerous intersections, highlight the need for continued attention. Targeted improvements in these high-risk areas could further reduce both crash frequency and severity. If you were injured, contact our Ontario personal injury lawyers today.
Methodology
The dataset used in this study comes from the Statewide Integrated Traffic Records System (SWITRS), which was cleaned and geocoded by the Transportation Injury Mapping System (TIMS) from 2020 to 2024. Only crashes with reported or suspected injuries were considered, while minor incidents with no injuries were excluded.
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