The ALPHA 70K TMA® is a truck mounted attenuator for use on stationary or moving shadow support vehicles. It is tested to NCHRP Report 350 Test Level 2. The unit is comprised of a crushable aluminum body with a Durashell® nose. The ALPHA 70K TMA® is designed to help absorb rear-end impacts at speeds up to 45 mph (70 km/h) when impacted within NCHRP Report 350 crash test standards.

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  • Durashell® nose may regain its original shape after low-speed nuisance hits.*
  • Tapered nose designed to help minimize corner damage and streamline appearance.
  • Cab control hydraulics allow cartridge to be lowered by driver.
  • Hydraulic system tilts to 90° position for storage.


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

Assembly & Maintenance

  • Optional receiver hitch helps facilitate TMA mounting.
  • Jacks help facilitate removal.



  • 990 lbs. – 1,200 lbs. (450 kg – 550 kg) Depending On Options
  • 11,025 lbs. (5,000 kg) Minimum Support Vehicle Weight

Cartridge only:

  • 8.4′ (254 cm) Long
  • 7′ 9″ (236 m) Wide
  • 22.5″ (57 cm) High

Product Images

Product Documents

PI Sheet



ALPHA 70K TMA® (Model 7000) Product Description Assembly Manual 620528
ALPHA 70K TMA® Model 7190 Product Description Assembly Manual
ALPHA 70K TMA® (Model 7590) Assembly Manual
LS-Pro Manual
ALPHA 70K TMA® Manual Mode 7000 24 Volt International

(Coming Soon)
Aluminum TMA (Truck Mounted Attenuator) Cartridge Patch Guide 618145 (Coming soon)
ALPHA 70K TMA® Manual For Models 7190TG Tailgate-Mount Systems (Coming soon)
Alpha 60 MD® TMA (Model 6190 International) Product Description Assembly Manual (Coming soon)
Alpha 100K TMA [Model 8190] Manual (coming soon)
Alpha 100K TMA [Model 8190C] Manual (coming soon)
TMA Model 7000l(Coming soon)