General Knowledge · Hazardous Materials Rule for All Commercial Drivers
What must a driver hold to operate a commercial motor vehicle used to transport hazardous materials as defined by federal regulation?
1.A hazardous materials (H) endorsement; a standard CDL with only the general knowledge test passed does not authorize hauling a placarded loadCorrect answer
2.Any valid CDL, without any additional endorsement, regardless of the quantity of material being transported on the load
3.The H endorsement is only required for interstate hauls, and never for hauls kept entirely within a single home state
4.The endorsement is optional and affects only insurance rates, rather than the legal authorization to drive the load
Explanation
A driver must hold a hazardous materials (H) endorsement to operate a commercial motor vehicle used to transport hazardous materials as defined in 49 CFR 383.5, under the endorsement requirement in 49 CFR 383.93(b)(4); passing the general knowledge test alone does not authorize hauling a placarded load. The wrong options each remove a real legal requirement: no endorsement is not sufficient regardless of cargo, the requirement is not limited to interstate hauls, and the endorsement is a legal authorization requirement, not merely an insurance consideration.
Source: 49 CFR 383.93(b)(4)
Related Hazardous Materials Rule for All Commercial Drivers questions
- For CDL purposes, what makes a material a "hazardous material" requiring an endorsement to transport?
- How does federal regulation organize hazardous materials for shipping and placarding purposes?
- Where must placards be displayed on a vehicle or container carrying a quantity of hazardous material that requires placarding?
- What does federal regulation require before a driver may receive a hazardous materials endorsement and transport hazardous cargoes?