MPS 350® X

The MPS 350® X is a galvanized, cantilevered truck mounted attenuator for use on stationary or moving shadow support vehicles. This compact TMA is tested to NCHRP Report 350 Test Level 3. Additionally, the MPS 350® X is further tested to the UK TD 49 (110 km/h) standard. The unit is made of galvanized steel components with an open frame design that helps facilitate inspection and maintenance. The MPS 350® X is designed to help absorb rear-end impacts at speeds up to 62 mph (100 km/h) when impacted within NCHRP Report 350 crash test standards.

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  • Standard galvanized system. Black and yellow powder coated systems available.
  • Open frame design helps facilitate inspection and less wind resistance.
  • Durashell® strike plate cover made of heavy-duty plastic designed to help minimize damage from nuisance hits.
  • Mounting options include fixed tailgate hitch, and socket hitch receiver.
  • In-cab control options available.
  • Warning buzzer designed to help alert crews when unit is not fully deployed or in upright position.
  • FMVSS 108 lighting system.

Assembly & Maintenance

  • Compact system for more efficient transport and staging.
  • Convenient swivel jacks and casters for more efficient mounting, dismounting, and moving to storage.
  • Open frame design helps facilitate inspection, maintenance, or repair.*
  • Replaceable bump stops.
  • Contained debris field after an impact within NCHRP Report 350 crash test standards.



*After an impact, the product must be inspected and evaluated per the direction of the specifying roadway authority. The ultimate decision on reparability rests with the specifying roadway authority and/or state DOT.


  • 14′ (4.30 m) Operating Position Length
  • 12′ 5″ (3.78 m) Raised Height
  • 69″ (1.76 m) Width
  • 1,680 lbs. (762 kg) Weight

Product Images

Product Documents

PI Sheet

MPS 350®


MPS 350® X Assembly Manual 620298

MPS 350® Manual 620262 (coming soon)