Hazmat Table & Classification
22 free questions, part of the Hazmat (H) Endorsement CDL practice test
The 49 CFR 172.101 Hazardous Materials Table tells you a material's hazard class, packing group, and ID number, and that table is what the hazmat classes questions on the test are built around. ELDT.io's free bank has 22 questions on reading the table and classifying materials correctly.
This topic has 22 questions, split into 2 tests of 11-11 questions each:
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How many hazmat classes are there under the federal system?
Nine. The CDL Manual and 49 CFR 172.101 use nine hazard classes, and several, like Class 1 explosives and Class 2 gases, are split into divisions with their own rules.
What counts as class 9 hazmat?
Class 9 is the catch-all for materials that do not fit Classes 1 through 8, including consumer commodities and some environmentally hazardous substances. It still gets a full table entry, an ID number, and required markings like any other class.
What does "Forbidden" mean in Column 3 of the Hazardous Materials Table?
It means that material cannot be shipped by that mode under any normal exception. If a shipping paper lists a material marked Forbidden, you do not load it, period.