Extension of Safety Assessment Tool for Construction Work Zone Phasing Plans

Engineering practitioners must balance safety and mobility when evaluating different construction phasing alternatives for highway work zones. There is a need for practitioner guidance and practical tools to assess work zone safety impacts as such resources are currently lacking. The objective of the study was to extend a structured safety assessment tool that was previously developed for freeways, expressways, and rural two-lane highways to include other facilities such as arterials, signalized intersections, unsignalized intersections, multi-lane highways, and ramps. Using Missouri data, this study introduces five new crash prediction models for work zones on urban multi-lane highways, arterials, ramps, signalized intersections, and unsignalized intersections. All the work zone models in this report are proposed for the first time. These work zone models are implemented in a user-friendly spreadsheet tool that automatically selects the appropriate model based on user input. The tool predicts crashes by severity, and computes the crash costs for each construction phasing alternative.

• Record URL:
  http://publications.iowa.gov/29689/1/Final_Report_extended_safety_assess_tool_for_WZ_phasing_w_cvr.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/66529
• Corporate Authors:

  University of Missouri, Columbia

  Department of Civil and Environmental Engineering
  Columbia, MO  United States  65211-2200

  Iowa Department of Transportation

  Smart Work Zone Deployment Initiative
  800 Lincoln Way
  Ames, IA  United States  50010

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Iowa State University, Ames

  Ames, IA  United States  50011
• Authors:
  • Brown, Henry
  • Sun, Carlos
  • 0000-0002-8857-9648
  • Edara, Praveen
  • Rahmani, Roozbeh
• Publication Date: 2018-8

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 97p

Subject/Index Terms

• TRT Terms: Arterial highways; Construction scheduling; Crash risk forecasting; Interchange ramps; Multilane highways; Signalized intersections; Software; Unsignalized intersections; Urban highways; Work zone safety; Work zones
• Geographic Terms: Missouri
• Subject Areas: Construction; Highways; Planning and Forecasting; Safety and Human Factors;

Filing Info

• Accession Number: 01693063
• Record Type: Publication
• Report/Paper Numbers: InTrans Project 18-535
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Feb 19 2019 11:52AM