Design and Evaluation of a Rural Intersection Conflict Warning System and Alternative Designs Among Various Driver Age Groups

Details

• Personal Author:
  Easterlund PA ; Erickson DJ ; Gerberich, Susan G. ; Kim H ; Morris NL ; Ryan, Andrew D. ; Tian D
• Description:
  Advanced Rural Intersection Conflict Warning Systems (RICWS) were deployed as countermeasures to reduce severe right-angle crashes at rural thru-STOP controlled intersections across the United States (U.S.). The simulator study designed and evaluated alternative RICWS designs to existing RICWS interventions, in varying rural driving scenarios, across age groups (N = 40 novice teenage, 40 middle-aged, and 40 older drivers). Each participant was randomly assigned to a RICWS design, either the original or an alternative, and drove through sequences of 17 thru-STOP controlled rural intersections (nine RICWS intervention and eight control intersections). Drivers' gap acceptance performance, intersection driving performance, traffic violation behaviors and self-reported workload were evaluated between intervention and control intersections. Regression models, applying the Generalized Estimating Equation (GEE), enabled efficacy determination of each RICWS design and an aggregated RICWS intervention effect, averaged across all simulated RICWS designs, among different levels of moderating factors. The safety performance and possible risks associated with the use of different RICWS designs were identified. Specifically, the original RICWS design had a significantly greater risk of STOP-sign violations at clear-view intersections with low traffic volumes, compared with control intersections (Risk Ratio = 2.18, 95% CI = 1.03 to 4.64). Except for Alternative RICWS Design 1, the alternative RICWS designs did not appear to outperform the Original RICWS Design. The moderating effects of drivers' ages and intersection types on aggregated RICWS intervention effects were also examined. This study provides important safety implications for development and evaluation of intelligent intersection warning systems, targeted to vulnerable driver populations at high-risk rural intersections. [Description provided by NIOSH]
• Subjects:
  Accident Prevention Accidents Accidents, Occupational Aging Automobiles Occupational Health Safety
• Keywords:
  Accident Prevention Age Groups Author Keywords: Intelligent Traffic Intervention System Drivers Equipment Design Intersection Gap Acceptance Motor Vehicles Novice Teenage Drivers Older Drivers Rural Thru-STOP Controlled Intersections Warning Systems

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• ISSN:
  0001-4575
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Minnesota ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  162
• NIOSHTIC Number:
  nn:20068034
• Citation:
  Accid Anal Prev 2021 Nov; 162:106388
• Contact Point Address:
  Disi Tian, Division of Environmental Health Sciences, School of Public Health, University of Minnesota, 1260 Mayo Building, Mayo Mail Code 807, 420 Delaware St. SE, Minneapolis, MN 55455, United States
• Email:
  tianx229@umn.edu
• Federal Fiscal Year:
  2022
• Performing Organization:
  University of Minnesota Twin Cities
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Accident Analysis and Prevention
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:1f512a15beef3f227dc879c6b73407d888417903077feaaa9be56cf3cc3b8347bf9370a8cdc55c4ebcfde491b71e2b0abef3233c1677dd536c32190f1dfa89cc
• Download URL:
  https://stacks.cdc.gov/view/cdc/230257/cdc_230257_DS1.pdf
• File Type:
  [PDF - 1.43 MB ]