To be authorized to drive a heavy vehicle, a driver must hold the appropriate class of licence and be in good health.
Alcohol: 0.5 mg for drivers of heavy vehicles
It is prohibited to drive or have the care or control of a heavy vehicle with a blood alcohol concentration equal to or higher than 50 mg of alcohol per 100 mg of blood (0.05).
If you drive a bus or a minibus, it's zero alcohol.
To find out more, go to the Alcohol page.