10 exam-style questions with answers and explanations. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free TMA questions are organized by exam domain, so you can see how each part of the Truck-Mounted Attenuator Operator blueprint is tested. Reveal the answer and explanation under each question.
A maintenance crew will occupy a travel lane on an Interstate highway with a 70 mph posted speed limit. To protect the crew, the truck-mounted attenuator selected should be crash-tested to which MASH test level?
Correct answer: D - Test Level 3 (TL-3)
Which statement about crash-test levels for truck-mounted attenuators is correct?
Correct answer: C - TL-3 is the highest level currently available for TMAs
A truck-mounted attenuator reduces the severity of a rear-end impact primarily by:
Correct answer: A - Crushing in stages to absorb the striking vehicle's energy
The current standard for crash-testing roadway safety hardware such as attenuators is MASH. Compared with the earlier NCHRP Report 350, MASH:
Correct answer: B - Uses heavier test vehicles and added angled/offset impact tests
A vehicle is positioned within a work zone specifically to physically stop or redirect an errant vehicle before it can reach the workers. This describes a:
Correct answer: C - Barrier vehicle
During a continuously moving operation such as pavement marking, the shadow vehicle is kept a relatively short, consistent distance behind the work vehicle. The main reason is to:
Correct answer: D - Keep motorists from driving into the gap between the two vehicles
Within the activity area of a temporary traffic control zone, the buffer space should contain:
Correct answer: B - Nothing; it must be kept clear at all times
In the direction of travel, a road user approaching and passing a work zone encounters the four temporary traffic control areas in which order?
Correct answer: B - Advance warning, transition, activity, termination
A maintenance division has only one truck-mounted attenuator available for several jobs happening at the same time. Applying priority-for-use guidance, the TMA should be assigned to the:
Correct answer: A - Lane closure on a high-speed, high-volume urban freeway
Which change would DECREASE the distance a shadow vehicle is pushed forward (rolls ahead) when struck from behind?
Correct answer: A - Increasing the weight/ballast of the shadow vehicle
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