Under Ontario's zero-tolerance law, you are not permitted to have any alcohol in your system if you are:

• Age 21 or under
• A driver of any age who holds a G1, G2, M1, or M2 licence
• Driving a vehicle that requires an A-F driver’s licence
• All of the above
  Explanation:

  "Under Ontario’s zero tolerance law for young, novice, and commercial drivers, you cannot have any alcohol in your system if you are: age 21 or under a driver of any age who holds a G1, G2, M1, or M2 licence driving a vehicle that requires an A-F driver’s licence or Commercial Vehicle Operator’s Registration (CVOR)."