Guardrail/Guiderail (GRL)

This NTPEP Technical Committee is responsible for authoring the project Work Plan. Members convene annually at the NTPEP National Meeting. During this working meeting, the Project Work Plan is discussed, changes are made, and shortly thereafter, are balloted for adoption. Improvements are immediately implemented in the next available testing cycle. When compared to other standards development exercises, the NTPEP process is agile, effective, and efficient.

NTPEP Designated Lab:

  • Missouri Department of Transportation

NTPEP - Guardrail/Guiderail

Committee Name:
NTPEP-Technical Committee on Guardrails
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Work Plan

NTPEP tests products according to a Project Work Plan, which describes the laboratory and/or field test protocols used to conduct the evaluation. The Project Work Plan is a consensus-based document and includes peer review and input from industry experts. Each Project Work Plan is adopted after receiving at least two-thirds affirmative support from 52 AASHTO member states. The Project Work Plan is the basis for host states to conduct their testing and evaluation. When implemented by state DOTs, their own state standard specifications may supersede the NTPEP Project Work Plan. Industry is advised to be aware of state-level requirements, which may supersede basic NTPEP testing.


Please go to NTPEP DataMine.

Please go to NTPEP DataMine.