Development of Methods to Evaluate Side Impacts for Next Edition MASH

The objectives of this research are the following: (1) Building on test procedures developed under NCHRP Project 22-32, determine appropriate values for RSH performance criteria. (2) Translate research results into a new chapter or supplement in a future MASH edition. These results shall also include recommendations for enhancements to a future RDG edition. This research shall consider appropriate test vehicles and focus on terminals; however, it shall also consider additional roadside safety devices. The NCHRP is seeking insights of proposers on how best to achieve the research objectives. Proposers are expected to describe research plans that can realistically be accomplished within the constraints of available funds and contract time. Proposals must present the proposers' current thinking described in sufficient detail to demonstrate their understanding of the issues and the soundness of their approach in meeting the research objectives. Project work in NCHRP Project 22-32A shall, with some transitional activity described below, resume where work in NCHRP Project 22-32 left off, as summarized in the Background. Task 1. Review previous work and literature; recommend updates to work plan. Task 1a. Review previous work and literature. Review work completed under NCHRP Project 22-32. Conduct a literature review to identify any additional research findings or other technical progress pertinent to the project. Obtain broader technical input on the test procedures recommended in NCHRP Project 22-32 from other experts having experience with them. Task 1b. Recommend updates to work plan. Based on the findings of Task 1a, recommend any changes felt necessary to the work plan, providing justification. Submit the findings of Task 1a and the updated work plan to NCHRP for approval. NCHRP approval is required before work on Task 2 may begin. Task 2. Evaluate test procedure effectiveness via crash testing. The research team shall evaluate the procedures recommended under NCHRP Project 22-32 and confirmed in Task 1 for measuring occupant risk factors in side impacts. The testing shall include the following objectives: (a) demonstrate repeatability of the side impact testing; (b) determine the performance of current guardrail end terminals; (c) determine the performance of luminaire poles; and (d) evaluate the vulnerability of current guardrail end terminals to shallow angle impacts. The research team shall ensure that (a) critical MASH Test Level 3 vehicles are considered in the testing; (b) MASH guardrail end terminals are used in the testing; and (c) confidentiality shall be maintained for any proprietary hardware tested, e.g., by categorizing performance issues by nature rather than by specific device characteristics. Following the testing, the team shall submit an interim report summarizing Task 2 results for NCHRP approval. The team shall also present a summary of Task 2 results at an in-person meeting with NCHRP. NCHRP approval of the interim report is required before work on Task 3 may begin. Task 3. Analyze test results and develop evaluation guide. Task 3a. Analyze test results. From Task 2 results, determine the practicality of the evaluation criteria and how agencies would implement them. Develop an outline for an evaluation guide. Submit the analysis and guide outline to NCHRP for approval via technical memorandum. NCHRP approval of the memorandum is required before Task 3b can begin. Task 3b. Develop evaluation guide. Elements for the guide shall include, but not be limited to, technical considerations for public or private organizations conducting the evaluations and implementation considerations for stakeholders, e.g., modifying MASH guidelines. Task 4. Submit final report and evaluation guide. Submit a final report documenting the entire project and the research team's recommendations for implementing methods for evaluating side impact testing by the roadside safety community. Submit a standalone comprehensive evaluation methodology guide in a format suitable as a supplement or new chapter in the next MASH edition and as recommended additions to the RDG.


  • English


  • Status: Proposed
  • Funding: $530000
  • Contract Numbers:

    Project 22-32A

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Jared, David

  • Start Date: 20201116
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01757402
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 22-32A
  • Files: TRB, RiP
  • Created Date: Nov 9 2020 3:23PM