What are TMA trucks?
The truck mounted attenuator (TMA) is a safety apparatus welded or bolted on the rear side of a work truck. The sizes of the TMA vary but most are at least 1.5 meters wide as the purpose is to reduce the impact of an automobile collision.
What is an attenuator on a truck?
THE ANSWER: An Attenuator Truck reduces injuries and saves lives of motorists and construction workers in work zones. It acts as a protective cushion device intended to absorb high-energy kinetic impact.
What is an attenuator on a vehicle?
An impact attenuator, also known as a crash cushion, crash attenuator, or cowboy cushion, is a device intended to reduce the damage to structures, vehicles, and motorists resulting from a motor vehicle collision. Impact attenuators are designed to absorb the colliding vehicle’s kinetic energy.
How long is a TMA truck?
When fully deployed, the Scorpion II TMA is only 13′ (4 m) in length, compared to other manufacturers units which are over 19′ (5.8 m), thus giving the Scorpion II the shortest overall length of any MASH Eligible Truck Mounted Attenuator on the market.
What is TMA driver?
Traffic Controllers and TMA Drivers Required Ability to read a traffic guidance scheme and confidently implement a traffic control set up. We provide traffic control solutions to various clients in the Sydney metro area.
What’s the definition of attenuator?
Definition of attenuator : a device for attenuating especially : one for reducing the amplitude of an electrical signal without appreciable distortion.
What is a 3dB attenuator?
An attenuation of 3dB corresponds to cutting power in half, while a gain of 3 db corresponds to a doubling of the power level. A gain of -3 dB is the same as an attenuation of +3 dB, corresponding to half the original power level.
What are Scorpion trucks?
The Scorpion II Truck Mounted Attenuator (TMA) is a mobile crash cushion attached to the rear of a support vehicle’s frame. The TMA may be used on moving shadow trucks, stationary block vehicles, or advanced warning vehicles upstream of a moving or stationary operation.
What does attenuator mean?
How much does a TMA weigh?
TMA trucks must be a minimum of 21,000 lbs. The weight must be attached to the truck in a manner that does not allow it to turn into a projectile if the truck is hit. All of the controls for the attenuator and arrow board must be in the cab so the driver does not have to step into traffic to operate them.
What is a scorpion truck?