MASH Barrier Certification Testing

Highway Safety Hardware Crashwortiness

The Manual for Assessing Safety Hardware (MASH) and NCHRP 350 represent uniform guidelines for conducting full-scale crash tests for permanent and temporary highway safety features along with evaluation criteria. Products addressed in MASH and NCHRP 350 include longitudinal barriers, guardrail transitions, end terminals, crash cushions, breakaway/yielding supports, truck mounted attenuators and work zone traffic control devices, and more. MASH barrier certification testing applies to permanent installations as well as temporary plastic barriers and barricades.

These products, if manufactured on or after Dec. 31, 2019, must be successfully tested to the 2016 edition of MASH at an independent laboratory like Calspan. Devices manufactured before this date, and successfully tested to National Cooperative Highway Research Project (NCHRP) Report 350 or the 2009 edition of MASH, may continue to be used throughout their normal service lives.


The crash performance of these barriers is judged on three main principles:

  • Structural Adequacy
  • Occupant Risk
  • Vehicle Trajectory

Calspan’s independent test lab will help you from start to finish to get your barrier certification. From installation to execution of the test, our team will deliver you with the data you need to get to market.

MASH ratings start with the test level which the test article will be certified to. In MASH, there are 6 test levels which increase in test speed and vehicle size as the test level increases. Test Levels are determined by the in-field application of the traffic safety device being tested (city roads, rural roads, highways, etc). To achieve a rating, the physical crash test of a traffic safety device must have met certain criteria regarding where the car ended up, how it got there and what kind of damage occurred. The basic differences per test level are noted below:

TL-1: Cars and pick-up trucks –– 31 mph

TL-2: Cars and pick-up trucks –– 44 mph

TL-3: Cars and pick-up trucks –– 62 mph

TL-4: Cars, pick-up trucks, and single unit trucks –– 62 mph and 56 mph respectively

TL-5: Cars, pick-up trucks, and tractor trailers –– 62 and 50 mph respectively

TL-6: Cars, pick-up trucks, and tractor tank trailers –– 62 and 50 mph respectively


Do you need your barrier MASH certified? Start the conversation with our barrier experts today!

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Through our collaborative approach and expertise in MASH barrier certification testing, Calspan’s customers enjoy innumerable benefits:
  • Customer Focused - At Calspan, we understand the stress manufacturers are under when a product is being tested; that is why we take the extra time to listen to your concerns, answer your questions, and work in a collaborative manner to get tests executed properly and on time.
  • Turn Key Solution - Calspan has all the equipment, personnel and resources to take care of all the different steps involved in testing, from installation, test execution and custom test reports.
  • Accredited Facility - Calspan is accredited to ISO 17025 to perform all the various test standards for such barrier systems
  • High Precision, Accuracy and Test Data - We use the same high-quality test equipment that is common for full-vehicle crash testing in the automotive industry through NHTSA/DOT & Vehicle OEMs