2025 Singapore BAC Laws - Legal Limits & Drink-Driving Penalties
Singapore drink-driving limit: 35µg/100ml breath or 80mg/100ml blood (~0.08% BAC). Strict penalties for first and repeat offenders. Limits under review in 2025.
Singapore Blood Alcohol Content (BAC) Legal Framework
0.08%Equivalent to 35µg/100ml breath, 80mg/100ml blood
Last Updated: 2025
Road Traffic Act (RTA) and Enforcement
Road Traffic Act (Section 67 et seq.)
It is an offence to drive while breath alcohol exceeds 35µg/100ml or blood alcohol exceeds 80mg/100ml, or when unfit to drive due to intoxication regardless of BAC.
Testing & Refusal
Police may require breath or blood samples. Refusal is an offence carrying penalties similar to drink-driving.
Penalty Bands
First-time and repeat offenders face escalating fines, disqualification, and possible imprisonment.
Penalties
| Category | Key measures |
|---|---|
| First offence | Fine: S$2,000–S$10,000 / Imprisonment up to 12 months (possible) / Mandatory disqualification (typically ≥2 years) |
| Repeat offence | Fine: S$5,000–S$20,000 / Imprisonment up to 2 years (mandatory jail possible) / Longer disqualification (≥5 years typical) |
First offence
- Fine: S$2,000–S$10,000
- Imprisonment up to 12 months (possible)
- Mandatory disqualification (typically ≥2 years)
Repeat offence
- Fine: S$5,000–S$20,000
- Imprisonment up to 2 years (mandatory jail possible)
- Longer disqualification (≥5 years typical)
Additional Information
Current Review
In 2025, authorities announced a review of breath and blood limits; changes may be introduced later.
Zero tolerance on impairment
Drivers can be charged if unfit due to alcohol even below numeric limits.