Weed & your licence
Weed and driving: how to get your licence back
A roadside swab, a positive result, and suddenly you are off the road. What follows is not the same everywhere: in the United States you sit through DUI school and a court-ordered evaluation, in Britain a drug-driving conviction means a ban of at least a year, in Australia you cannot even apply for your licence until a behaviour change program is done. This page walks you through it, country by country, and helps you find a provider near you.
Where are you right now?
Jump straight to your situation
You do not have to read all of it. Pick the part you need.
01Find a providerPrograms, assessments and counselling near youOpen the search 
02Rules in your countryUS, UK, Australia, Canada, New ZealandSee the rules 
03What happens nextFrom the roadside stop to your licence backSee the steps 
04How long THC shows upBlood, urine, saliva and hair in one tableSee the table 
05Proving you have stoppedWhat counts as evidence, and what does notRead about testing 
06The questions you will be askedAnd what the assessor listens forSee the questions 
07Will it be used against me?What honesty actually costs youRead the answer 
08Medical cannabisA prescription is not a free passRead the exception Provider search
Find a provider near you
Programs, court-approved assessors and counselling services that work with drivers who lost their licence over drugs or alcohol. The directory is being built country by country. If you run a service like this, you can be listed for free.
The basics
Why drug driving is treated differently from drink driving
With alcohol there is one number everyone agrees on, and it drops predictably: a few hours after your last drink you are sober and the test says so. THC does not behave like that. It is stored in fat and released slowly, so a regular smoker can test positive long after the high is gone. That single fact drives almost everything that follows.
Most countries reacted by writing a fixed limit into the law and leaving impairment out of it. Britain set 2 micrograms of THC per litre of blood. Canada made 2 nanograms per millilitre a summary offence and 5 nanograms the serious one. Several Australian states and a number of US states went further and made any detectable amount an offence, which means you can lose your licence while being completely sober.
The second difference matters even more for getting the licence back. A drink-driving ban ends when it ends. A drug case tends to end with someone asking whether you still use, and that question is answered with an assessment, a program or a test result, not with a calendar.
- !Roadside tests find the drug, not the impairment. A saliva swab shows recent use. It says nothing about whether you were fit to drive.
- !The ban is only half of it. In most places the licence comes back after a program, an assessment or proof that you stopped, not simply after time.
- !Legal to buy is not legal to drive. In every legal-cannabis state and province, driving after use is still an offence.
The path
What happens, from the roadside stop to your licence back
The names change from country to country, the sequence barely does.
The stop
A saliva swab at the roadside, or field sobriety tests and an officer trained to spot drug impairment. A positive swab is not the evidence itself, it is the reason for the next step.
Blood or urine
The sample that actually counts, taken at a station or a clinic. Weeks can pass before the laboratory result arrives.
Immediate suspension
Many places take the licence there and then, before any court has looked at the case. This is an administrative step and it runs on its own track.
Court
Fine, disqualification period, sometimes a criminal record. This is also where a program or an assessment is ordered.
The program or assessment
DUI school, a behaviour change program, a remedial program, an approved assessment. Almost always at your own cost.
Proof that you stopped
Depending on the country and how serious the case was: negative tests, a medical review, an interlock, or a written report.
Reinstatement
Fees, paperwork, sometimes a new test, sometimes higher insurance for years. The licence rarely just reappears.
Start the program early. In almost every system the clock on your ban and the clock on your program run at the same time, so waiting only delays the day you drive again.
Country by country
What your country actually requires
Five systems, five different words for roughly the same thing. Rules also vary by state and province, so treat this as the shape of it, not as legal advice.
United States
DUI school and evaluation
A DUI is a criminal matter in every state, and cannabis counts. Alongside the court case the DMV runs its own suspension. Getting the licence back normally means finishing an alcohol and drug education program, known almost everywhere as DUI school, plus a substance abuse evaluation by a state-certified agency. The evaluation decides whether education is enough or whether treatment is recommended, and the DMV usually will not reinstate you until both are complete.
- !DUI school and the evaluation are separate things. Doing one does not cover the other.
- !The evaluation typically takes one to two hours and costs roughly 100 to 500 dollars.
- !Zero-tolerance THC rules apply in a number of states, so a positive test alone can be enough.
- !Expect an SR-22 insurance filing and a reinstatement fee on top.
United Kingdom
Drink Drive Rehabilitation Scheme and the DVLA
Drug driving is its own offence with fixed blood limits, 2 micrograms per litre for THC. A conviction carries a driving ban of at least twelve months, a criminal record and an endorsement that stays on your licence for eleven years. One thing catches people out: the Drink Drive Rehabilitation Scheme, which can cut a ban by up to a quarter, is only offered for drink-driving offences. If your case was drugs, that shortcut does not exist.
- !Minimum twelve-month ban, and it rises fast for repeat offences.
- !No rehabilitation course discount for drug-driving convictions.
- !The DVLA can require medical enquiries and evidence that you no longer use before it returns the licence, and it can refuse in the meantime.
- !Employers see the endorsement for years, which is often the bigger problem.
Australia
Behaviour Change Program
Rules are set by each state, but the pattern is consistent: any detectable THC is an offence, and the court will not simply hand the licence back. In Victoria you must complete a Behaviour Change Program before you can apply for a licence eligibility order. In New South Wales the Traffic Offender Intervention Program plays the same role.
- !The program is a condition of applying, not an optional extra.
- !Providers are approved by the state authority, and only approved ones count.
- !Interlocks are common for repeat and high-range offences.
- !Fees are paid by you and vary widely between providers.
Canada
Back on Track, RDP, Planning Ahead
Impaired driving is federal law, and since 2018 there are THC limits: 2 nanograms per millilitre for the summary offence and 5 for the serious one. What you have to do afterwards is provincial. Ontario runs Back on Track, British Columbia the Responsible Driver Program, Alberta the Impaired Driver Remedial Education program known as Planning Ahead.
- !A remedial program is mandatory before reinstatement in most provinces.
- !Programs are screening plus education, and a follow-up months later.
- !Costs run into the hundreds and in British Columbia over a thousand dollars.
- !An ignition interlock period often follows the program.
New Zealand
Approved assessment centre
Drug driving carries disqualification, and for the serious and repeat cases the way back runs through an assessment centre approved by the Ministry of Health. The same applies when you want to leave the alcohol interlock program and move to a zero alcohol licence, or to have an indefinite disqualification lifted.
- !Only Ministry of Health approved centres can do the assessment.
- !The assessment looks at your actual use, not only at the offence.
- !A zero alcohol licence usually follows for a period afterwards.
- !Waiting periods apply before you can even apply for the assessment.
The assessment
What actually happens in the assessment
Whatever it is called where you live, an assessment is a structured conversation with a counsellor or psychologist, usually one to two hours, often with a questionnaire beforehand. The person opposite you is not trying to catch you out. They are answering one question for the authority: is this person likely to do it again?
They form that judgement from three things. What you did, what you have changed since, and whether your account of it holds together. The third one is where most people lose. A story that does not match the file reads as denial, and denial is the single strongest predictor they have.
You will usually leave with a recommendation rather than a verdict: education only, a longer program, or treatment. That recommendation is what the court or the licensing authority acts on.
Detection windows
How long THC shows up
Ranges, not promises. Body fat, how much you smoked and for how long move these numbers a lot. If you smoked daily, assume the far end of every row.
| Sample | Occasional use | Daily use | Used for |
|---|---|---|---|
| Blood | up to about 12 hours | up to several days | the offence itself |
| Saliva | up to about 24 hours | up to 72 hours | roadside testing |
| Urine | 3 to 7 days | 3 to 6 weeks | abstinence monitoring |
| Hair | roughly one month per centimetre of growth, up to 6 months | proving a longer period | |
Evidence
Proving you have stopped
Where an authority wants proof rather than a promise, it wants results from a laboratory, not from a chemist’s shop kit. Two things make evidence count: the sample was taken under supervision, and you did not choose the day.
- !Urine screening on short notice. Called in at random, sampled under observation, usually four to six times over six or twelve months.
- !Hair analysis. Covers months in one go, but does not work if you shave or bleach, and a short crop limits the window.
- !A doctor’s letter is not proof. It records what you told them.
Two practical warnings. Passive smoking does not produce a positive laboratory result, so it is not worth offering as an explanation. And CBD products do produce them: many contain enough THC to show up, and no authority will treat that as a mistake.
Money
What it costs to get back on the road
Rough ranges in local currency, before any fine and before a lawyer.
| Country | Program | Assessment | Plus |
|---|---|---|---|
| United States | DUI school, a few hundred to over 1,000 | 100 to 500 | reinstatement fee, SR-22 insurance for years |
| United Kingdom | no course for drug cases | DVLA medical, around 100 upward | insurance premiums that often double |
| Australia | behaviour change program, several hundred | included in most programs | licence application fees, interlock rental |
| Canada | remedial program, 600 to 1,200 | part of the program | interlock, reinstatement fee |
| New Zealand | counselling if recommended | approved assessment, a few hundred | zero alcohol licence, application fees |
The number that surprises people is never the program. It is insurance. A drug-driving conviction sits on your record for years and follows you into every renewal, and in the United States an SR-22 filing alone can outweigh everything else on this page.
The exception
Medical cannabis is not a free pass
A prescription changes your legal position in some places and changes nothing in others. In the United Kingdom there is a medical defence if the drug was taken as prescribed and you were not impaired, and you have to raise it and evidence it. In Australia only Tasmania allows anything similar so far. In zero-tolerance jurisdictions a prescription is simply not a defence.
What is true everywhere: impaired is impaired. If the way you drove showed it, the prescription does not help you, and the dose and the timing become the whole argument.
If your case involves a prescription, keep every document, keep the pharmacy records, and get advice before you say anything about your dosing.
The conversation
The eight questions you will be asked
Different words, same eight questions, everywhere. Knowing them in advance is not cheating. Rehearsed answers are obvious in the room. But you can think about them in your own time instead of inventing something on the spot.
What the assessor checks
Your answer is compared with the file and the laboratory values. Someone who smoked daily for years and describes it as weekend use creates a contradiction the assessor sees immediately.
Why the date matters
A date carries weight, “a while ago” does not. Vagueness here reads as something being held back, and it colours everything that follows.
Why this question comes up
Almost nobody smokes daily for no reason. Sleep, stress, boredom, pain. Naming it shows you understand your own pattern, and it is the only way to show you replaced it with something.
What a good answer looks like
They want the thinking, not the excuse. “I felt fine” is a real answer and tells them how you judge your own state, which is exactly what they are assessing.
What counts as evidence
Concrete things. Who you stopped seeing, what you do at the time you used to smoke, how you sleep now. General insight without detail sounds learned.
Why a tested plan wins
A strategy you have already used beats a promise. If you can describe a situation where it worked, that is worth more than any declaration.
What isolation signals
People who told somebody do better, and the assessor knows the research. Handling it entirely alone is treated as a risk factor, not as strength.
Why honesty helps here
An honest answer is a strength. “It could not happen” is the wrong one, because it shows no plan for the situation that is most likely to occur.
The fear everyone has
“Will everything I admit be used against me?”
It is the question people arrive with, and the honest answer has two halves.
The assessment is not a criminal interview, and the assessor is not building a case against you. But the report goes to the authority, and what you say shapes it. So yes, it is used, just not in the way you are picturing.
What actually sinks people is the opposite of honesty. The file already says how much was in your blood. If you describe yourself as an occasional smoker and the numbers say daily, you have not protected yourself, you have told the assessor that your account cannot be trusted. From that point the recommendation is close to written.
Say what happened. Be specific about the past and specific about what changed. That combination is the one thing that consistently reads well.
Avoidable
The five reasons people get sent away again
- !Starting too late. The ban and the program run in parallel. Booking in month ten of a twelve-month ban adds months you did not have to lose.
- !Playing down the use. The laboratory report is in the file before you walk in.
- !Using a provider that does not count. Only programs approved by the relevant authority satisfy the requirement. Check before you pay.
- !A gap in the testing. One missed appointment can invalidate a whole abstinence period, and you start again.
- !Stopping only until the licence is back. Repeat offences carry far heavier consequences, and the second time around nobody believes the plan.
All five come down to the same thing: the paperwork is not the problem, the using is. That is the part our online program was built for.
Common questions
Answered briefly
Can I be over the limit the morning after?
Yes. THC clears far more slowly than alcohol, and for a daily smoker blood levels can stay above a fixed legal limit for a day or more after the last joint.
Does a passenger smoking in the car put me over the limit?
No. Passive exposure does not produce the blood levels these laws are set at. It is not a workable defence and it does not read well in an assessment.
Can CBD oil make me fail a test?
Yes. Many CBD products contain enough THC to show up in a urine or hair test, and no authority treats that as an accident. If you are being tested, stop using them.
How long will I lose my licence?
In the UK at least twelve months for a first drug-driving conviction. In the US, Australia, Canada and New Zealand it depends on the state or province, the level found and whether it has happened before, and it usually runs from several months to several years.
Does cannabis being legal where I live change anything?
Not for driving. Every legal-cannabis state and province still treats driving after use as an offence, and several of them apply a strict numeric limit.
Do I have to admit I used regularly?
You do not have to say anything that is untrue, and you should not say anything that is. If the file shows regular use and you describe occasional use, the assessor stops trusting the rest of your account.
Is the program the same as treatment?
No. A program is education plus a screening. Treatment is what gets recommended if the screening suggests dependence, and it can be a condition of getting the licence back.
Can I do the program online?
In several places, yes, including Canada and parts of Australia. It has to be an approved provider either way, so check with the authority before you book.
What if I cannot afford it?
Ask the provider about payment plans and ask the court about hardship provisions. Waiting is the expensive option, because nothing starts until the program does.
Will my employer find out?
In the UK the endorsement sits on your licence for eleven years and anyone entitled to check it will see it. In other countries a criminal record check will show the conviction.
What if I stop and then relapse during the process?
Tell the provider rather than hide it. A relapse that is disclosed and dealt with reads far better than one discovered in a test result.
How do I get listed in your directory?
If you run a program, an assessment service or counselling for drivers, write to us and we will add you free of charge, with your contact details and a link to your site.
The licence is the deadline. Stopping is the point.
Every system on this page asks the same question in the end: has this person actually changed anything? Our free e-book and our online program are built around that question, not around the paperwork.
