Alcohol and Drugs Rules for Professional HGV Drivers
Scope
This article covers alcohol and drugs fitness to drive for professional HGV drivers. It is not medical advice and not a full criminal-law textbook. Limits and prescribed medicines need current official / company guidance.
Why professionals face a harder edge
- Roadside limits still apply — and a conviction can end vocational entitlement and employment
- Many operators run zero-tolerance policies stricter than the criminal limit
- Client sites may require testing; refusing or failing can remove you from that work immediately
Overnight and “I feel fine”
Residual alcohol the morning after is a classic career-ender. If you drank heavily the night before a early start, assume risk until you are sure you are clear. “I feel okay” is not a breath test.
Medicines and drugs
- Check labels and GP / pharmacist advice for drowsiness and driving warnings
- Illegal drugs and many impairing substances are incompatible with professional driving — company policies often ban them outright
- Declare relevant prescriptions through the channels your operator requires before a random test surprises you
If you are unfit
Do not start the shift. Call the office, follow sickness / unfit procedures, and protect the licence you still have. Driving anyway to “save the load” risks the load, the public, and your livelihood.
If stopped or tested
Comply with lawful testing. Notify the operator as policy requires. Do not invent explanations on the hard shoulder.
Driver habit
Plan nights before early starts as dry nights. Know your company’s drug and alcohol policy the same way you know drivers’ hours — it is part of staying employed.
