N Main St & NW 8th Ave
Grade C. About 9.9 crashes a year, 1.4× what a similar intersection sees. Most are rear-end crashes. Suggested fix: appropriate yellow change intervals.
Crashes a year
9.91.4× a similar intersection
Crash rate for its traffic
1.8×the median similar intersection, per car driving through
0.8 vs 0.5 crashes per million cars
Since January 2022
45crashes in total
2 walking, 1 on a bike, none fatal
What stands out
Mostly rear-end crashes, at about the usual share for an intersection like this.
When crashes happen
Busiest 10 AM to 6 PM, worst on Wednesdays.
The fix
Appropriate yellow change intervals
- 36-50% fewer red-light running where it's been tried
- 8-14% fewer total crashes where it's been tried
- 12% fewer injury crashes where it's been tried
CostLow
How this fix worksThe intersection
- YesSignal
- YesCrosswalk
- YesLeft-turn lane
- NoMedian
Camera angles
From above, and from the street. Turn the street view to look down each road.
Read the full write-up
The signalized intersection of N Main St & NW 8th Ave ranks 68 citywide with 45 observed crashes, compared to 32 predicted for similar corners. This screening indicates excess crashes per year at the location. Rear-end collisions represent the top crash type, which remains normal for similar corners. Implementing appropriate yellow change intervals offers a low cost countermeasure for the traffic signal. FHWA reports that this countermeasure provides a reduction in total crashes, injury crashes, and red-light running at signalized intersections.
Rear-end. Rear-end collisions represent 50% of crashes compared to 46% at similar corners. Because this crash type is not listed as distinctive, it is normal for similar corners. The evidence points to common stopping conditions at this signalized intersection.
Written by Gemini from the numbers on this page.