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Attenuator Truck Requirements in Texas

It’s not always easy to find the Texas TMA Regulations that pertain to your specific work zone procedures. We get that! Some states barely have guidelines. Thank goodness for Texas; they have clearly outlined the regulations around the use of TMA trucks in highway work zones. We’ve gathered all the information on attenuator truck requirements in Texas and displayed them here for you! If you have any questions, please don’t hesitate to call us!

Texas TMA Requirements

The Simple Facts:

  1. Texas traffic control plans require the use of a TMA truck.
  2. All shadow vehicles MUST be equipped with a truck mounted attenuator.
  3. The host, or shadow vehicle, must weight a minimum of 19,000 lbs.
  4. Weight used to ballast the truck must be contained from becoming a projectile.
  5. The sheeting on the TMA must be retroreflective white and retroreflective red.


Texas TMA Regulations


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Texas Attenuator Truck Regulations

Attenuator Truck Requirements in Texas

Texas' Compliant Work Zone
Traffic Control Devices

L.1. Truck-Mounted Attenuators (TMAs) and Trailer Attenuators (TAs)
      TMAs and TAs used on TxDOT facilities must be NCHRP 350 or MASH compliant. Level 2 compliant TMAs are approved for use only on roadways with regulatory speed limits of 45 mph or less. Level 3 compliant TMAs may be used on any TxDOT facility. The host vehicle for the TMA and TA shall weigh a minimum of 19,000 pounds.    *Host vehicles may be ballasted to achieve the required weight. Any weight added to the host vehicle shall be properly attached or contained within it so that it does not present a hazard, and that proper energy dissipation occurs if the attenuator is impacted from behind by a large truck. The weight of a TA shall not be considered in the weight of the host vehicle but the weight of a TMA may be included in the weight of the host vehicle. Attachment of TMA shall be in  accordance with manufacturer’s recommendations.