Practice question

What is the purpose of a blue Emergency Notification System sign at a highway-rail grade crossing?

  1. It gives a 24/7 telephone number to report crossing problems or emergencies
  2. It tells drivers the crossing is closed forever
  3. It marks a bus-only lane
  4. It replaces all railroad warning signs

Answer: A — It gives a 24/7 telephone number to report crossing problems or emergencies

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