Practice question

A digital sign lowers the speed limit and warns that a lane is closed ahead. How should you treat it?

  1. As an official traffic control that can change speed limits and warn of lane closures
  2. As a suggestion only for out-of-state drivers
  3. As a message that applies only during nighttime
  4. As permission to ignore other signs

Answer: A — As an official traffic control that can change speed limits and warn of lane closures

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