Truck Mounted Attenuator

Ledwell understands the importance of safety, which is why we work directly with customers to build and customize TMAs that cater to their specific needs down to the last detail. We offer multiple chassis options and arrow board options, either hydraulic or electric-powered, to pair with the Truck Mounted Attenuator.

Our commitment to safety is reflected in our equipment, and we prioritize safety as the highest concern. To learn more about our safety-focused equipment and how it can benefit your operations, contact our Ledwell experts today! 

SKU: TMA Category: Tags: , , ,


Ledwell prioritizes the safety of employees and motorists, especially during on-road or on-site collisions. Our Truck Mounted Attenuator (TMA) Truck is designed with safety as the topmost consideration. We collaborate with customers to build, design, and customize Attenuator Trucks, also known as Crash Trucks, that cater to their specific requirements.

We offer multiple chassis options and arrow board options, either hydraulic or electric-powered, to pair with the TMA Truck. Our equipment exemplifies our commitment to safety, which is a top priority at Ledwell.

To learn more about our safety-focused equipment, contact our Ledwell experts today!


16′ or 20′ bed length
Attenuator – MASH certified
15 light arrow board


Removable stake sides
Work light package
Full-function wireless remote


Non-slip protective surface coating
DOT-approved lights and reflectors
Conspicuity tape


Cone seat with safety gate
25 light arrow board
Ballast box
Multi-view camera system

TMA Truck Resources




Attenuator Truck

How do I operate a TMA Crash Truck?

Operating your Ledwell Attenuator Truck correctly is important to extend the life of your equipment. Watch this operational series video or follow the steps below.

To get started, walk around the entire truck to inspect the following:

Overhead and ground obstructions, Lights, Wheels & Tires, and Attenuator.

If needed, toggle the switch to turn on strobes and work lights.

Push the button on the in-cab control tower to raise the lightboard.

Set the light configuration as needed.

Deploy the Attenuator by pushing button on the in-cab control tower.

 To use Cone Seat, remove the safety latch and slide open the gate. Enter workspace. Close the gate and install safety latch.

 To remove Stake Side, release the latch and the lift panel up.

 When finished with job, reverse the process to stow all equipment.

What does an attenuator truck do?

An attenuator is a crash cushion mounted to a truck’s rear. This type of truck is called an Attenuator Truck or sometimes a Crash Truck. These trucks can be seen in roadway work zones to protect workers from moving traffic. The attenuator absorbs impact when hit by a vehicle.

What is the purpose of a ballast box on an attenuator truck?

A ballast box is typically an empty metal box at the front of the bed. The box is used to provide the counterweight needed for proper usage of the attenuator based on state regulations. It is usually filled with heavy materials such as gravel or sand.

What does TMA stand for?

TMA stands for Truck Mounted Attenuator.