Your vehicle is carrying chlorine. You only need to stop for railroad crossings when the shipment includes which condition of chlorine?

• A. Any amount
• B. More than 100 pounds
• C. Only if the container is a certain size
• D. Never

Answer: (A)

Stopping at railroad crossings applies to toxic inhalation hazard (TIH) materials, not just large quantities. Chlorine is a TIH, so you must stop for every crossing regardless of how much you’re carrying. A small release can still pose serious danger, so quantity doesn’t change the requirement to stop and verify it’s safe before crossing. The other options imply thresholds or never stopping, which don’t apply to TIH like chlorine.