CDL Hazardous Materials Endorsement

First published: September 2, 2026Last verified: September 2, 2026Reviewed by the CertQuestUSA team

TL;DR

CDL Hazardous Materials Endorsement: a 111-question practice bank for the real CDL Permit & Endorsement Exams standard, 2 full papers of 50 questions each with no repeats, every question citing the real regulation it comes from.

Where these questions come from

Every question in this bank cites a real source -- primarily 49 CFR (100%) of this exam's citations.

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2

full papers, no repeats

50

questions per paper

111

questions in the bank

What this exam covers

Driver Responsibilities & Security9%
Emergency Response & Communication6%
Hazardous Materials Table9%
Labeling9%
Loading, Unloading & Segregation11%
Marking9%
Packaging9%
Placarding13%
Route Restrictions & Tunnels8%
Shipping Papers11%
Cargo Tank Marking6%

5 real sample questions

For a shipment of hazardous waste, the shipping paper retention period is extended to how long after acceptance by the initial carrier?

A. 375 days

B. 1 year

C. 3 years

D. 5 years

Source: 49 CFR 172.201

A shipment of a hazardous substance in a quantity that equals or exceeds its reportable quantity (RQ) must show what additional notation on the shipping paper description?

A. "HOT" before the shipping name

B. The letters "RQ"

C. The word "URGENT"

D. A red diagonal stripe symbol

Source: 49 CFR 172.203

When a shipper offers a hazardous material for transportation, who must receive and retain a copy of the shipper's certification required by § 172.204?

A. Only the consignee

B. Only the initial carrier

C. Any carrier in the chain of custody

D. No one; certification is not retained

Source: 49 CFR 172.204

Column 6 of the § 172.101 table lists which required element for each hazardous material entry?

A. Emergency response telephone number

B. Label codes

C. Cargo tank specification number

D. Segregation group letter

Source: 49 CFR 172.101

A cargo tank built of quenched and tempered steel must be marked near the specification plate with which letters?

A. "QT"

B. "NQT"

C. "HT"

D. "CT"

Source: 49 CFR 172.328

Real-world data for this exam

Heavy and Tractor-Trailer Truck Drivers: real median wageMay 2025$58,640/yr Hazardous Materials Compliancesince 2023-01-0129,960 violations Part of the real CDL Driver career pathExplore ›

Frequently asked questions

How many questions are on the CertQuestUSA CDL Hazardous Materials Endorsement practice test?

111 questions total, split into 2 full papers of 50 each with no repeats across papers.

What topics does the CDL Hazardous Materials Endorsement test cover?

11 domains, with the heaviest weight on Placarding (13%), Loading, Unloading & Segregation (11%), and Shipping Papers (11%).

Where do CertQuestUSA's CDL Hazardous Materials Endorsement questions come from?

Primarily 49 CFR (100%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.

Is there a free diagnostic for CDL Hazardous Materials Endorsement?

Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.

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