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CDL Hazardous Materials (H) Endorsement Test

Driving and parking rules: practice questions

Our CDL Hazmat bank has 26 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1

How close may you smoke to a vehicle carrying Class 1, Class 5 or flammable materials?

  1. Not within 10 feet
  2. Not within 50 feet
  3. Not within 100 feet
  4. Not within 25 feet
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D. Not within 25 feet — 49 CFR 397.13: no smoking or lighted cigarette, cigar or pipe on or within 25 feet

Question 2

When is a placarded vehicle considered attended?

  1. When the doors are locked and alarmed
  2. When the driver is within 300 feet and has the keys
  3. When the person in charge is awake in it (not in the sleeper) or within 100 feet with a clear view
  4. When the driver is asleep in the sleeper
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C. When the person in charge is awake in it (not in the sleeper) or within 100 feet with a clear view — 49 CFR 397.5(d)(1): attended means on the vehicle, awake, not in a sleeper berth, or within 100 feet with an unobstructed view

Question 3

Which of these vehicles must stop before a railroad crossing?

  1. Any pickup with a toolbox
  2. An empty dry van
  3. A flatbed hauling lumber
  4. A cargo tank used for hazmat, loaded or empty
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D. A cargo tank used for hazmat, loaded or empty — 49 CFR 392.10(a)(4): every cargo tank motor vehicle used for hazmat, loaded or empty, must stop

Question 4

May you uncouple a trailer of hazmat and leave it on a public street?

  1. Yes, if it is placarded
  2. No
  3. Yes, for less than an hour
  4. Yes, with chocks in place
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B. No — Do not uncouple a trailer and leave it with hazardous materials on a public street (CDL Manual 9.6.2)

Question 5

Whenever placarded, which areas should you avoid if possible?

  1. Heavily populated areas, crowds, tunnels, narrow streets and alleys
  2. Interstate highways and toll roads
  3. Rural two-lane roads
  4. Truck stops and weigh stations
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A. Heavily populated areas, crowds, tunnels, narrow streets and alleys — Whenever placarded, avoid heavily populated areas, crowds, tunnels, narrow streets and alleys unless there is no other way (CDL Manual 9.6.5)

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