Every year in B.C., thousands of people operate motor vehicles while under the influence of alcohol, drugs or both. Driving while affected by alcohol or drugs is a leading cause of death on the roads.
Learn about the laws that regulate alcohol, drugs and driving, roadside screening, the consequences of failing or refusing a breath sample, and more.
The Criminal Code of Canada and the Motor Vehicle Act
Every year in B.C., thousands of people operate vehicles while under the influence of alcohol or drugs. Driving while affected by alcohol or drugs is a leading cause of death. Two major laws regulate alcohol, drugs and driving in B.C.
Under the Criminal Code it’s a crime to use a motor vehicle while impaired by alcohol, drugs or both, including when the vehicle is not in motion.
Specifically, it’s a crime to drive if you have a:
For more information, see Canada’s Blood Drug Concentration Regulations.
There are three offences for driving while impaired by tetrahydrocannabinol (THC).
Police may demand a person give a breath or blood sample. They can also demand that a person submit to an evaluation by a Drug Recognition Expert. Police can do this when they have reasonable grounds to believe:
It’s an offence to fail or refuse to follow a demand.
The Motor Vehicle Act regulates drivers and driving in B.C.
If an approved screening device shows a driver has a blood alcohol content that is equal to or greater than 0.05 police can serve them with a driving prohibition.
Indicators and roadside screening devices
Police may demand a driver give a breath sample on an approved screening device (which is sometimes referred to by its acronym, ASD.) They can do this if they have a reasonable suspicion alcohol has affected the driver's ability to operate a vehicle.
The screening device will show the driver’s blood alcohol content. If alcohol is present in the driver, the device will show Warn or Fail.
If your breath sample has a blood alcohol content equal to or greater than 0.05 you face these consequences:
First time in a five-year period
Second time in a five-year period
Third time in a five-year period
Fail, refusal or failure to provide a breath sample
Police may serve you a 90-day driving prohibition if:
Police can also recommend charges under the Criminal Code.
If you’re issued a 90-day prohibition:
See also, Immediate Roadside Prohibition Penalties.
If police charge you under the Criminal Code, they will:
If convicted, you face:
RoadSafetyBC may also refer you to the Responsible Driver Program, the Ignition Interlock Program, or both.
Read Canada’s Impaired Driving Laws for more information
Alcohol-related motor vehicle incidents and drug affected driving
Police can ask you to go to a police station if they believe you were the driver of a vehicle involved in an incident such as a collision.
After investigating the incident, police may prohibit you from driving. They may also recommend charges against you. Your prohibition is separate from any penalties a court may impose on you.
If a police officer suspects drugs have affected your driving, they can serve you with:
For more information, visit Alcohol and drug related driving prohibitions and suspensions.
Alcohol, drugs and the Graduated Licensing Program
Drivers in the Graduated Licensing Program who use a motor vehicle with any alcohol, THC or cocaine in their system will:
Novice drivers must start their 24-month (N) licensing period over again. Learners (L) must reattempt all testing.
For more information, see our Driver Improvement Program page.