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

Details

• Creators:
  Singleton, Patrick A. ; Mekker, Michelle ; Gaither, Alyssa ; Subedi, Atul ; Islam, Ahadul
• 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
• Subject/TRT Terms:
  • Best practices
  • Channelized intersections
  • Highway design
  • Pedestrian safety
  • Persons with disabilities
  • Right turn lanes Pedestrian-vehicle crashes
  • Bicycle crashes
• Publication/ Report Number:
  UT-23.09
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States;Utah
• 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
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/72595/dot_72595_DS1.pdf
• File Type:
  [PDF - 3.74 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:d77cba7f80b3f41acd5fce3095a15c97f605b6fc8bf7bf6655255b7d208128125af4cf7d5bcdf846224e72adb3497bb9c9b93366ab5f62404d1dc2c6db7b366d