Confirm the current MASH crash-test level and host-vehicle weight requirement for a truck-mounted attenuator (TMA) before assigning a crash truck to a specific state DOT project.

domain: state DOT specifications (MnDOT / MoDOT / Maryland SHA) · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

  1. Confirm the TMA has an FHWA Hardware Eligibility Letter certifying compliance with MASH 2016 at the required Test Level (TL-1 25 mph, TL-2 45 mph, or TL-3 62.5 mph)
  2. Check the specific state's minimum test level requirement — e.g., MnDOT requires MASH-16 TL-3 or higher on its approved products list; MoDOT requires MASH 2016 TL-3 for attenuators manufactured after January 1, 2023
  3. Confirm host vehicle weight meets the commonly required minimum (approximately 19,000 lbs), with ballasting permitted to reach it
  4. For Maryland SHA projects, check Section 104.23 ('Protection Vehicle (PV)') of the Standard Specifications for Construction and Materials for state-specific placement/operation rules
  5. Verify the TMA unit is on the relevant state's current approved/qualified products list (e.g., MnDOT's Truck/Trailer Mounted Attenuators list) rather than assuming national MASH compliance alone is sufficient

Known gotchas

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