SW 20th Ave & SW 38th Ter
Grade C. About 14 crashes a year, 1.3× what a similar intersection sees. Most are rear-end crashes. Suggested fix: appropriate yellow change intervals.
Crashes a year
141.3× a similar intersection
People walking or biking
3crashes since 2022 involved someone walking or on a bike
Since January 2022
63crashes 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 2 PM to 9 PM, worst on Thursdays.
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
SW 20th Ave & SW 38th Ter is a signalized intersection ranking 67 citywide in safety screening. The location recorded 63 crashes, exceeding the 50 crashes predicted for similar corners, which represents 3 excess crashes per year. Screening indicates no distinctive crash types are present, meaning the observed distribution reflects normal conditions for similar intersections. The evidence points to intersection signal countermeasures as an appropriate focus. Installing appropriate yellow change intervals provides a low-cost countermeasure associated with reductions in red-light running and total crashes.
Rear-end. Rear-end collisions represent 56% of crashes at this intersection compared to 46% at similar corners. Because this type is not listed under distinctive crash types, it is considered normal for similar corners. The evidence points to standard signalized intersection interactions rather than an elevated specific pattern.
Written by Gemini from the numbers on this page.