Hazmat Transportation Compliance Guides for CDL Drivers and Carriers

These guides cover the operational compliance requirements for transporting hazardous materials by highway under the Hazardous Materials Regulations (HMR) in 49 CFR Parts 171–180. The H endorsement allows a CDL driver to transport placardable quantities of hazmat — these pages cover what that entails on every trip.

Hazmat Route Restrictions for CMV Drivers

Federal and state route restrictions for hazmat highway transport: tunnel restrictions, preferred NRHM routes, and how to identify applicable restrictions.

Updated 2026-05-29