It’s illegal to drive if either:
- you’re unfit to do so because you’re on legal or illegal drugs
- you have certain levels of illegal drugs in your blood (even if they haven’t affected your driving).
Legal drugs are prescription or over-the-counter medicines. If you’re taking them and not sure if you should drive, talk to your doctor, pharmacist or healthcare professional.
The police can stop you and make you do a ‘field impairment assessment’ if they think you’re on drugs. This is a series of tests, e.g. asking you to walk in a straight line. They can also use a roadside drug kit to screen for cannabis and cocaine.
If they think you’re unfit to drive because of taking drugs, you’ll be arrested and will have to take a blood or urine test at a police station.
You could be charged with a crime if the test shows you’ve taken drugs.
Prescription medicines
It’s illegal in England and Wales to drive with legal drugs in your body if it impairs your driving.
It’s an offence to drive if you...
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