Practice question

When deploying a Truck-Mounted Attenuator (TMA) in a stationary freeway lane closure, what state should the TMA shadow truck be in during active work?

  1. Parked in neutral with parking brake released.
  2. Parked in gear (or Park) with parking brake firmly set and wheels straight.
  3. Idling in low gear with driver riding the clutch pedal.
  4. Jacked up on hydraulic wooden blocks to prevent tire roll while unattended overnight.

Answer: B — Parked in gear (or Park) with parking brake firmly set and wheels straight.

The correct answer is shown above. Try the full quiz for additional practice.

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