Analysis of Roadway Safety under the Alternative Project Delivery Systems

In the United States, most highway projects were developed using the traditional design‐bidbuild delivery system. Following to regular conditions assessment, maintenance of a road is performed based on the availability of funds and the priorities established for road maintenance. With the scarcity of maintenance funds, serviceability of roads is impacted, which affects road safety. The new alternative project delivery systems such as design‐build‐operatemaintain, design‐build‐finance‐operate‐maintain, and other public‐private partnership (PPP) models provide for more consideration into the life cycle of highways. Particularly, under performance‐based long‐term contracts, which are the norm for PPP systems, road maintenance and performance become controlling parameters in compensating contractors for their work. With serviceable well‐maintained roads, it is expected that road safety records would improve. Through content analysis of PPP procurement documents and agreements as well as surveys, this research will investigate PPP projects for their contractual safety terms such as the design of safety payments, measurements, and safety specifications. Through statistical analysis, the research will survey target PPP states for the roadway safety records and compare them to the safety records of the localities of the respective states. Data analysis should reveal how safety was contractually managed on the PPP projects and what was the safety performance of such projects. The outcome will help local, and state transportation agencies make decisions regarding whether one delivery system would be better than others when it comes to roadway safety, and how best to manage safety through contractual terms.

Language

  • English

Project

  • Status: Completed
  • Funding: $39692
  • Contract Numbers:

    DTRT13-G-UTC40

  • Sponsor Organizations:

    Pacific Northwest Transportation Consortium

    University of Washington
    More Hall Room 112
    Seattle, WA  United States  98195-2700

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    University of Washington, Seattle

    Civil and Environmental Engineering Department
    201 More Hall, Box 352700
    Seattle, WA  United States  98195-2700
  • Project Managers:

    Abdel Aziz, Ahmed

  • Performing Organizations:

    University of Washington, Seattle

    Civil and Environmental Engineering Department
    201 More Hall, Box 352700
    Seattle, WA  United States  98195-2700
  • Principal Investigators:

    Abdel Aziz, Ahmed

  • Start Date: 20151216
  • Expected Completion Date: 20161215
  • Actual Completion Date: 20161215
  • USDOT Program: University Transportation Centers
  • Subprogram: Research
  • Source Data: http://depts.washington.edu/pactrans/research/projects/analysis-of-roadway-safety-under-the-alternative-project-delivery-systems-year-4-2015-2016/

Subject/Index Terms

Filing Info

  • Accession Number: 01629731
  • Record Type: Research project
  • Source Agency: Pacific Northwest Transportation Consortium
  • Contract Numbers: DTRT13-G-UTC40
  • Files: UTC, RiP
  • Created Date: Mar 22 2017 5:45PM