The Commercial Vehicle Safety Alliance (CVSA) conducted unannounced hazardous materials/dangerous goods (HM/DG) inspection initiative on June 21-25, 2021. Inspectors stationed in the United States, Canada, and Mexico inspected more than 13,000 vehicles throughout the five-day initiative.

The three most common violations found during this initiative were non-bulk/small means of containment packaging violations, shipping papers violations, and placarding violations. The least common — but most dangerous — violation identified was package integrity (leaking) violations.

During the five-day initiative, enforcement officers sidelined any vehicles and drivers with any out-of-service violations, including HM/DG. These drivers and vehicles were not allowed to resume travel until the violations had been corrected.