Hazardous materials rules for all drivers: New Jersey CDL practice questions
Part of the General Knowledge test. We have 5 checked questions on this topic. Here are the key rules, and two to try.
Key facts
| Part of | the General Knowledge test (80% to pass) | NJ MVC CDL FAQ |
|---|---|---|
| Manual section | §2.23 Hazardous materials rules for all drivers | NJ CDL Manual p. 2-43 |
| Questions in CDL Mile's bank | 5 | CDL Mile, checked against NJ CDL Manual |
Key rules
- § 2.23.3p. 2-44
A tank endorsement is needed for a vehicle built to haul any liquid or gas in a tank of more than 119 gallons when the tanks total 1,000 gallons or more, mounted permanently or temporarily. A single 2,000-gallon tank is over both limits, and the cargo does not have to be hazardous.
Lists of Regulated Products
Try two questions
General Knowledge · Hazardous materials rules for all drivers
A vehicle's hazardous cargo requires placards. At a minimum, how many identical placards must it have, and where do they go?
Tap an answer to see the explanation and the manual page.
General Knowledge · Hazardous materials rules for all drivers
Why must hazardous materials shipping papers be clearly marked or kept on top of your other shipping papers?
Tap an answer to see the explanation and the manual page.
More General Knowledge topics
Sources
New Jersey Commercial Driver License Manual, version March 2025, New Jersey Motor Vehicle Commission. Page references are to its printed page numbers. CDL Mile is independent and not affiliated with the NJ MVC.
Updated for the March 2025 New Jersey CDL manual. Last checked November 5, 2026.
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