Practice question

On Caltrans Standard Plan T9 (Multi-lane Freeway Lane Closure), where must the primary Truck-Mounted Attenuator (TMA) shadow vehicle be positioned?

  1. Upstream of the advance warning signs outside the highway shoulder.
  2. Inside the merging taper adjacent to the arrow board.
  3. In the longitudinal buffer space upstream of the work activity area.
  4. In the termination area downstream of the buffer zone.

Answer: D — In the termination area downstream of the buffer zone.

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

Practice more: C-31 Traffic Control Practice Questions - California CSLB C-31 Construction Zone Traffic Control Examination Exam →