What drug and alcohol tests are required for a CDL license?

Drug and alcohol tests are required in the following situations:

References

Overview of Drug and Alcohol Rules: What CDL Drivers Need to Know
Federal Motor Carrier Safety Administration (FMCSA)

Information for Motorists Who Have Received an Order of Suspension or Revocation (Form MV-1192) for an Alcohol-Related Conviction (P-71) (pdf)
Information for Motorists Who Have Received an Order of Suspension (Form MV-510D) for a Drug-Related Conviction (P-71D) (pdf)
New York State Department of Motor Vehicles

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