CDL · Hazardous materials
You are carrying a Division 4.3 material labeled "DANGEROUS WHEN WET," and the shipment weighs 100 pounds. Are you required to stop at railroad-highway grade crossings?
Correct answer: Only if the vehicle is placarded, has chlorine aboard, or uses cargo tanks for hazmat.
Answer options
- AYes, any amount of any hazard class always means a stop at the tracks
- BNo, that stop is required only for vehicles hauling explosives or radioactive loads
- COnly if the vehicle is placarded, has chlorine aboard, or uses cargo tanks for hazmat Correct
Why
Placards, any quantity of chlorine, or cargo tanks used for hazmat (even empty ones) are what make the railroad stop mandatory; a hazmat load that meets none of these conditions does not by itself require it.
About this question
Topic: Hazardous materials License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of HazMat Routes, Crossings and Checks (23 questions). Take the full set and check your score.
Practice HazMat Routes, Crossings and ChecksMore questions from HazMat Routes, Crossings and Checks
- A placarded trailer you are pulling rides on dual tires. When are you required to inspect those tires?
- You are hauling hazardous materials and must stop for a railroad crossing ahead. What is the farthest from the nearest rail that you may stop?
- You haul radioactive materials that must stay on a required route. How recently must the carrier have given you special training?
- During a hazmat haul, you notice that one tire is losing air. What does the rule require you to do?
- During a hazmat trip you find an overheated tire. What must you do?
- Federal rules say a placarded hazmat vehicle should avoid tunnels. When may it still use one?
- Partway through a hazmat trip, your en route inspection turns up an overheated tire. What are you required to do?
- What is a driver required to keep on hand while transporting Division 1.1 or 1.2 explosives?
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