Practice question

What mode MUST an Arrow Board display when positioned on a paved shoulder for a shoulder closure where no live traffic lane is closed?

  1. Left Flashing Arrow mode for shoulder closures on high-speed roadways.
  2. Right Flashing Arrow mode.
  3. Sequential Chevron Arrow mode.
  4. Caution mode (flashing four corners or flashing horizontal line).

Answer: D — Caution mode (flashing four corners or flashing horizontal line).

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