Does a DOT Drug or Alcohol Violation Bar a Driver From Operating Any CMV?
In his July 2025 article in NDASA’s newsletter, Tim Thoelecke (CSAPA, InOut Labs) addresses a common question within the drug-and-alcohol testing industry: If a driver fails a DOT-regulated drug or alcohol test, is he or she barred from all commercial vehicle operation, even small non-CDL ones? (NDASA) Key Insights 1) FMCSA Rule § 382.501 Applies Broadly [...]
















