Traffic Safety Evaluation at Reduced Conflict Intersections in Minnesota

Moreland, Max; Leuer, Derek; DeVoe, Eric; Saari, Ian

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Traffic Safety Evaluation at Reduced Conflict Intersections in Minnesota

2021-08-01
By Moreland, Max ; Leuer, Derek ; DeVoe, Eric

File Language:

English

Details

Creators:

Moreland, Max ; Leuer, Derek ; DeVoe, Eric ; Saari, Ian
Corporate Creators:

Minnesota Department of Transportation
Corporate Contributors:

Minnesota. Department of Transportation. Office of Research & Innovation
Subject/TRT Terms:
Publication/ Report Number:

MN 2021-22
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

Minnesota. Department of Transportation
Abstract:

Between 2010 and 2020, 49 Reduced Conflict Intersections (RCIs) were installed on Minnesota Department of Transportation (MnDOT) roadways. The RCI is an alternative intersection layout that is intended to provide safety benefits by limiting the number of points within an intersection that two or more vehicle paths might intersect. Both a before-after analysis at RCIs and a cross-sectional analysis comparing RCIs to untreated intersections were conducted. With the installation of an RCI, both analyses yielded statistically significant decreases in fatal and serious injury crashes, angle crashes, and fatal and serious injury angle crashes. Statistically significant increases in rear-end crashes were found. Both analyses showed no significant changes to sideswipe crashes or total crashes. Based on these results, severity shift in crashes has been seen at the RCIs in Minnesota. The overall number of crashes have not changed, but the high-severity crashes have been reduced while property damage crashes have increased. The large decreases in severe crashes at RCI locations indicate the RCI can be an effective safety treatment.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/57552/dot_57552_DS1.pdf
File Type:

[PDF - 3.36 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:32e0c00833146f6c6de2dfeeb82a5551a0344b6000da1f638d46bc650252ec00

File Language:

English

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