No driver may be on duty and possess, or be under the influence of, any of the following types of drugs or substances:
- Any 21 CFR 1308.11 Schedule I substance;
- Any type or formulation of an amphetamine;
- Any type or derivative of a narcotic; or
- Any other substance that would impede a driver’s ability to safely operate a vehicle, including misused or abused prescription drugs, or marijuana, medicinal, or otherwise.
These rules do not apply to prescription drugs or substances given to a driver under the instruction of a licensed medical practitioner as noted in 49 CFR 382.107, so long as the substance does not impede the driver’s ability to safely operate a vehicle.
The term “possession” does not apply to substances manifested and transported as part of a shipment.