Alcohol, drugs and medical conditions

Rules and consequences for impaired driving

Safety first

It is strictly prohibited to drive under the influence of alcohol, drugs or other impairing substances.

Drink-driving

§ 53 — It is an offence to drive a motor vehicle while under the influence of alcohol

Alcohol limits

It is an offence to drive or attempt to drive a motor vehicle if you have consumed alcohol to an extent that results in:

Alcohol concentration in the blood: Above 0.50 per mille during or after driving
Alcohol concentration in the breath: Above 0.25 mg per litre

Safe driving

Subsection 2: It is also an offence to drive or attempt to drive a motor vehicle if you have consumed alcohol to an extent that makes it impossible to drive safely.

Even below the statutory limits, driving may be an offence if the alcohol impairs your ability to drive.

Driving under the influence of impairing substances, illness, etc.

§ 54 — Comprehensive prohibition on impaired driving

Impairing substances

Subsection 1: It is prohibited to drive or attempt to drive a motor vehicle if, during or after driving, the blood contains impairing substances classified as hazardous to road safety under rules laid down by the Ministry of Transport, Building and Housing, and which have not been taken in accordance with a valid prescription.

Important: The same applies to substances taken in accordance with a valid prescription if the use does not comply with the prescription.

Illness and impairment

Subsection 2: It is also prohibited to drive or attempt to drive a motor vehicle if the driver, owing to the following, is unable to drive the vehicle safely:

Illness
Impairment
Exhaustion
Lack of sleep
The effects of stimulants or sedatives
Similar causes

Bicycles and horse-drawn vehicles

Subsection 3: Bicycles, horse-drawn vehicles or horses must not be driven or attempted to be driven by persons who, owing to the causes mentioned in subsection 2 or the influence of alcohol, are unable to control the vehicle or horse safely.

Responsibility for others

Handing over a vehicle

Subsection 4: It is prohibited to hand over control of a vehicle or a horse to a person who, owing to the causes mentioned in subsection 2 or the influence of alcohol, is unable to control the vehicle or horse safely.

Responsibility of licensed venues

Subsection 5: If a person at a restaurant or other public serving venue has consumed alcohol, and the host or their assistant knows or has reason to believe that the person is the driver of a vehicle or a horse and is unable to control it safely, the host or assistant must try to prevent the person from driving the vehicle or horse, if necessary by calling the police.