Practice question

When must certain hazardous-material cargo tanks stop before railroad crossings?

  1. When placarded, carrying chlorine, or using hazmat cargo tanks whether loaded or empty
  2. Only when more than 90% full
  3. Only when the crossing has a gate
  4. Never if the driver has N

Answer: A — When placarded, carrying chlorine, or using hazmat cargo tanks whether loaded or empty

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