Effects of Changing MASH Injury Occupant Criteria on Roadside Barrier Designs Deemed Acceptable--UMTRI Assistance in Full Vehicle Crash Testing

The Manual for Assessing Safety Hardware (MASH) defines crash tests to assess the impact performance of highway safety features in frontal and oblique impact events using criteria that are based on the structural adequacy of the safety feature, post-impact behavior of the test vehicle, and risks of injury for the occupants of the impacting vehicle. MASH occupant injury criteria are considered conservative, as they are based on injury potential for unrestrained occupants in vehicles that are more that 20 years old and lack current safety features like airbags. One commonly cited concern with the MASH injury criteria is that identify many barrier systems that must fit within geometric site constraints as having inadequate length to redirect test vehicles. The goal of this project, which is being led by Texas Tech Transportation Research Institute (TTI), is to explore how updating MASH criteria to account for improvements in vehicle structures, occupant restraint systems, and increased seat belt use would affect the design space of roadside barriers deemed acceptable. A combination of computational simulation and physical testing using crash test dummies as human surrogates is proposed. All simulations and whole vehicle crash testing will be performed at TTI. University of Michigan Transportation Research Institute's (UMTRI's) role in this project will be to assist TTI with whole vehicle testing. Deliverables for UMTRI will include: (1) Providing a Hybrid III midsize male ATD instrumented with all the standard set of sensors used in FMVSS 208 barrier impact testing and associated data acquisition for use in a single whole vehicle crash test performed at TTI. (2) Sending a staff member to TTI to assist with dummy operation and data collection. (3) Assist in the dummy data including, calculating all injury metrics for subsequent comparison to flail space model predictions.


  • English


  • Status: Completed
  • Contract Numbers:


  • Sponsor Organizations:

    Department of Transportation

    Office of the Assistant Secretary for Research and Technology
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Performing Organizations:

    Center for Advancing Transportation Leadership and Safety (ATLAS Center)

    University of Michigan
    2901 Baxter Road
    Ann Arbor, MI  United States  48109
  • Principal Investigators:

    Rupp, Jonathan

  • Start Date: 20140902
  • Expected Completion Date: 0
  • Actual Completion Date: 20150902
  • Source Data: RiP Project 37446

Subject/Index Terms

Filing Info

  • Accession Number: 01543046
  • Record Type: Research project
  • Source Agency: Center for Advancing Transportation Leadership and Safety (ATLAS Center)
  • Contract Numbers: DTRT13-G-UTC54
  • Files: UTC, RiP
  • Created Date: Nov 4 2014 1:00AM