Product Sheet
     Product Specifications
     FHWA Acceptance

  SST® Trailer TMA Truck Mounted Attenuator














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The SST® is a trailer mounted attenuator for use on stationary or moving shadow support vehicles. The SST has passed all mandatory and optional testing and is NCHRP Report 350 Test Level 3 compliant. The system is comprised of two light-weight aluminum cartridges contained in a steel support frame, heavy duty Torflex® axle and wheels, with anti-rotational dampeners which lock upon impact. The SST helps to absorb rear-end impacts at speeds up to 62 mph (100 km/h).

  • Trailer system enables rapid deployment and maximum truck fleet utilization.
  • Anti-rotational dampeners minimize rotation of unit when impacted according to NCHRP Report 350 crash test standards.
  • Heavy duty Torflex axle and wheels.
  • Optional tested arrow board mounting systems.
  • Withstands typical low-speed nuisance hits up to 6 mph (10 km/h).
  • Potentially reusable steel frame.
Mounting and Repair Advantages:
  • Easy mounting and removal.
  • Attaches to a standard minimum 20 ton pintle hook with additional mounting brackets for the anti-rotational dampeners.
  • 18'11" (5.77 m) Length
  • 7'9" (2.36 m) Width
  • 3'9" (1.14 m) Height
  • 2,606 lbs. (1,182 kg)
  • 9,920 lbs. (4,500 kg) Minimum Support Vehicle Weight
Energy Absorption Systems, Inc.