Right-Turn Safety for Walking/Bicycling: Impacts of Curb/Corner Radii and Other Factors

Singleton, Patrick A.; Mekker, Michelle; Gaither, Alyssa; Subedi, Atul; Islam, Ahadul; Utah State University. Department of Civil and Environmental Engineering

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Right-Turn Safety for Walking/Bicycling: Impacts of Curb/Corner Radii and Other Factors

2023-09-01
By Singleton, Patrick A. ; Mekker, Michelle ; Gaither, Alyssa ; ...

[PDF-3.74 MB]

English

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Details:

Creators:

Singleton, Patrick A. ; Mekker, Michelle ; Gaither, Alyssa ; Subedi, Atul ; Islam, Ahadul

Singleton, Patrick A. ; Mekker, Michelle ; Gaither, Alyssa ; Subedi, Atul ; Islam, Ahadul Less -
Corporate Creators:

Utah State University. Department of Civil and Environmental Engineering
Corporate Contributors:

Utah Department of Transportation ; United States. Department of Transportation. Federal Highway Administration

Utah Department of Transportation ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Best Practices Bicycle Crashes Channelized Intersections Highway Design Pedestrian-vehicle Crashes Pedestrian Safety Persons With Disabilities Right Turn Lanes
Publication/ Report Number:

UT-23.09
Resource Type:

Tech Report
Geographical Coverage:

United States ; Utah

United States ; Utah Less -
Edition:

Final Dec 2020 to Sept 2023
Corporate Publisher:

Utah Department of Transportation
Abstract:

The objective of this research project is to understand factors (especially curb/corner radii) affecting safety at intersections involving right-turning vehicles and pedestrians/bicyclists. A mixed-methods approach was used, combining crash data analysis with analysis of observational video data. For the crash analysis, data were assembled about more than 1,000 pedestrian and nearly 1,200 bicycle crashes with right-turning vehicles at signalized intersections in Utah from 2010 to 2019, and analyses involved comparisons using chi-square tests and multivariate zero-inflated negative binomial regression models. For the observational analysis, data were transcribed from videos recorded at 34 signalized intersections in Utah in 2021 and 2022 capturing more than 1,500 pedestrian conflicts with right-turning vehicles, and analyses involved correlations as well as multilevel regression models. Too few bicyclists were observed to be able to analyze bicycle–vehicle conflicts.
Format:

PDF
Funding:

21-8540
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:945c1c6d985d804a625826ad71425fe2014a43074fa87ec31eb459a13b2481e9
Download URL:

https://rosap.ntl.bts.gov/view/dot/72595/dot_72595_DS1.pdf
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Right-Turn Safety for Walking/Bicycling: Impacts of Curb/Corner Radii and Other Factors

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