Cannabis Driver's Licence Revocation Switzerland: FiaZ, Assessment, Re-issuance 2026 | CannabisClub.ch
Complete guide: FiaZ, road-medical assessment level 3/4, suspension cascade, abstinence proof, CBD pitfalls and your rights after a positive THC test in Switzerland.
After a positive THC test in a Swiss police check, over 5,000 people per year lose their driver's licence — often for months, sometimes years. This guide walks through what happens step by step: driving under the influence (FiaZ), the road-medical assessment (level 3/4), suspension cascade, re-issuance, CBD pitfalls and your rights.
TL;DR — Licence revocation for cannabis
- THC limit: 1.5 µg/L blood = driving-unfit (Art. 91 SVG).
- Immediate: licence seized at the stop; canton issues precautionary revocation within days.
- Warning revocation: minimum 3 months (1st offence, "medium-severity violation").
- Safety revocation: doubts about fitness → medical assessment (level 3 or 4), CHF 1,500–4,500 out of pocket.
- Re-issuance: positive assessment + typically 6 months documented abstinence (hair analysis).
- CBD trap: legal CBD can push blood THC above the limit; roadside tests don't distinguish reliably.
- Cascade: 2nd offence within 2 years = at least 12 months + assessment.
The legal framework
Switzerland enforces a near-zero-tolerance limit: 1.5 µg/L THC in blood = driving-unfit, regardless of actual impairment. Key statutes:
- Art. 91 SVG — driving under the influence.
- Art. 16b/16c SVG — warning revocation (medium-severity).
- Art. 16d SVG — safety revocation for fitness doubts.
- VZV Art. 27–33 — procedure, suspension periods, re-issuance.
- ASTRA road-medicine directive — 4-level examination framework.
Limit details in the THC limit guide.
What happens after a positive test?
Step 1: stop & pre-test
Suspicion → oral fluid or urine screening → positive → mandatory blood draw. Licence typically seized on the spot.
Step 2: blood analysis
Forensic lab measures THC (active) and THC-COOH (metabolite). Only THC ≥ 1.5 µg/L proves acute impairment; THC-COOH indicates use pattern.
Step 3: precautionary revocation
The canton issues precautionary revocation within days. Appeal window: 30 days at the cantonal administrative court.
Step 4: two parallel procedures
- Criminal (prosecutor): fine, conditional monetary penalty, prison on repeat.
- Administrative (road authority): warning or safety revocation.
FiaZ vs. FuD
- FiaZ — driving unfit right now (THC ≥ 1.5). Triggers warning revocation.
- FuD — general fitness doubt (chronic use, high THC-COOH). Triggers safety revocation and medical assessment.
Suspension cascade
- 1st offence (medium): ≥ 3 months warning revocation.
- 2nd within 2 y.: ≥ 12 months + assessment.
- 3rd within 10 y.: ≥ 24 months + assessment.
- 4th within 10 y.: indefinite revocation — re-issue only after 5 years good conduct.
- Novice drivers (< 3 y. licence): probation extension cancelled, may have to redo test.
Severe violations (accident, THC > 3 µg/L, alcohol combo) lengthen all periods substantially.
The medical assessment
Level 3 — road-medical examination (VMU)
- FMH-certified forensic/road-medicine specialist
- History, physical, lab (blood, urine, often hair)
- Cost: CHF 1,500–2,500, out of pocket
- Report in 4–8 weeks
Level 4 — road-medical expert opinion
- Institute-level (IRM, UZH, university hospital)
- Adds road-psychology testing (reaction, focus)
- Cost: CHF 3,000–4,500
- 2–4 months
Hair analysis — 3 cm = 3 months
Standard: 3 cm hair analysis = 3 months retrospective. Measured: THC-COOH pg/mg. SGRM cutoffs:
- < 0.05 pg/mg: abstinence plausible
- 0.05–0.2 pg/mg: occasional use
- > 0.2 pg/mg: regular use → fitness typically denied
Abstinence proof
Core of re-issuance: 6 months of gap-free abstinence proof via 6 cm hair or frequent urine checks. Any violation restarts the 6-month clock.
Responsible consumption cultureCannabisClub combines education, documentation and community — with clear rules on use vs. driving. No substitute for a lawyer, but a preventive environment.
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Getting the licence back
- Suspension expired
- Positive medical assessment
- Abstinence proof (typically 6 months)
- Test drive or traffic-education course if ordered
- Written application (~1 month processing)
CBD pitfalls
- Legal CBD (< 1 % THC) at high dose can push blood THC above 1.5 µg/L.
- Oral-fluid pre-tests don't reliably distinguish THC vs. CBD.
- At a stop: consenting to a blood test often proves you're below limit faster than refusing.
- Rule of thumb: no CBD flower/vape before driving. Oil (< 0.3 % THC): 12 h grace.
See CBD vs THC and drug-test guide.
What to do at a stop
- Stay calm, cooperate, but stay silent. Right to remain silent (StPO Art. 158).
- Sign nothing without a lawyer — never a "confession".
- Allow the blood test. Refusal is treated as positive.
- Contact a lawyer within 10 days. Criminal & admin deadlines run in parallel.
- Check legal-expenses insurance — traffic legal cover often applies.
Your rights
- File access: full case files including the blood report.
- Evidence requests: second opinion, witnesses, technical review.
- Appeal deadlines: penalty order 10 days, revocation order 30 days.
- Suspensive effect: appeal against safety revocation can be suspensive in hardship cases (commuting).
Cost reality
- Fine / monetary penalty: CHF 500–3,000
- Procedure costs: CHF 500–1,500
- Medical assessment: CHF 1,500–4,500
- Lawyer (average): CHF 3,000–8,000
- Traffic course: CHF 800–1,500
- Total (typical): CHF 6,000–15,000 + 3–12 months without licence
FAQ
How long is my licence gone? 1st offence: 3 months minimum. Safety revocation: until positive assessment + abstinence proof (typically 6–12 months).
Can CBD oil cost me the licence? Theoretically yes — high doses can push blood THC over the limit. No CBD flower/vape before driving.
What does a medical assessment cost? Level 3: CHF 1,500–2,500. Level 4: CHF 3,000–4,500. Out of pocket.
Do I need a lawyer? Safety revocation or repeat: yes. First warning revocation, no accident: recommended but not mandatory.
THC-COOH half-life? Chronic use: up to 30 days in urine; hair covers 3 months per 3 cm.
Is one joint enough for the limit? Yes — one joint can keep blood THC above 1.5 µg/L for 3–8 hours, longer in chronic users.
Second offence? At least 12 months + assessment + likely safety revocation.
How to become a member? Join the waitlist.
Changelog
- July 2026: Initial publication. Legal status SVG/VZV July 2026, ASTRA road-medicine directive, SGRM thresholds.
Frequently asked questions
- How long is the licence gone minimum?
- 1st offence: 3 months warning revocation. Safety revocation: until positive assessment + 6 months abstinence proof — usually 6–12 months total.
- Can CBD oil cost me the licence?
- Theoretically yes — high doses can push blood THC over 1.5 µg/L. No CBD flower or vape before driving; 12 h grace for oil under 0.3 % THC.
- What does the assessment cost?
- Level 3 (VMU): CHF 1,500–2,500. Level 4 with road-psych testing: CHF 3,000–4,500. Out of pocket.
- Do I really need a lawyer?
- For safety revocation or repeat offence: strongly recommended. First warning revocation without accident: recommended but not mandatory; check legal-expenses insurance first.
- How long is THC-COOH detectable?
- Up to 30 days in urine for chronic users. 3 months per 3 cm of hair. Blood-THC itself only hours to a few days.
- Does one joint hit the limit?
- Yes — one joint keeps blood THC above 1.5 µg/L for 3–8 hours, longer in chronic users due to fat-store release.
- Second offence?
- Within 2 years: at least 12 months + road-medical assessment. Usually safety revocation with abstinence proof before re-issuance.
- What to do at a stop?
- Cooperate but stay silent (StPO Art. 158). Allow the blood test — refusal counts as positive. Contact a lawyer within 10 days. Sign nothing.