Key Framework Criteria & Principles
Section 67 Alcohol Concentration Offence
35 µg / 80 mg LimitsA driver commits the alcohol-concentration offence when the proportion of alcohol exceeds the prescribed limit of 35 microgrammes per 100 ml of breath or 80 milligrammes per 100 ml of blood.
Section 67 Unfit-to-Drive Offence
Actual ImpairmentA person can also be convicted where alcohol causes the driver to be incapable of having proper control of the vehicle, even apart from the measured alcohol-concentration offence.
Mandatory Disqualification
2 / 5 YearsThe court generally must disqualify a first offender for at least 2 years and a repeat offender for at least 5 years, subject to the statutory special-reasons exception. Life disqualification applies after two or more earlier qualifying convictions unless shortened for special reasons.
Specimen Refusal
Separate OffencesRefusal of a preliminary breath test under section 69 has its own punishment. Refusal without reasonable excuse to provide a specimen under section 70 can be punished as the underlying section 67 or 68 offence.
Offences
Section67
Heading
Driving Under the Influence of Alcohol
Subsections
Limits
Breath
35 microgrammes of alcohol per 100 millilitres of breath
Blood
80 milligrammes of alcohol per 100 millilitres of blood
Important
The law contains two distinct section 67 routes. A person does not need to rely solely on the measured alcohol concentration where the facts establish that the person was unfit to drive.
Section69
Heading
Preliminary Breath Test
Purpose
Section 69 allows a police officer, where the statutory conditions are met, to require a person who is driving, attempting to drive or in charge of a motor vehicle to provide a preliminary breath specimen. Since 3 October 2025, immigration officers at authorised checkpoints also have specified powers under section 69.
Refusal Penalty
First
Fine of S$1,000 to S$5,000 or imprisonment up to 6 months, or both.
Repeat
Fine of S$3,000 to S$10,000 or imprisonment up to 12 months, or both.
Arrest
A police officer or immigration officer can arrest in the circumstances specified by section 69, including where a preliminary breath test indicates reasonable cause to suspect that the alcohol concentration exceeds the prescribed limit or where the person fails to provide a required specimen.
Section70
Heading
Specimen for Analysis
Description
After an arrest under section 69(5), a police officer may require a specimen of breath for testing under section 70 or, where the statutory conditions apply, a blood specimen for laboratory analysis.
Refusal
A person who, without reasonable excuse, fails to provide a required specimen under section 70 commits an offence. If the person was driving or attempting to drive when the relevant circumstances arose, the person can be punished as if convicted under section 67.
Important
Section 70 refusal is not the same offence as refusing the preliminary breath test under section 69 and should not be given the section 69 penalty.
Drink-Driving Penalties
First Offence
Fine
S$2,000 to S$10,000
Imprisonment
Up to 12 months
Structure
Fine or imprisonment, or both
Disqualification
At least 2 years, unless the court finds special reasons to order a shorter period or no disqualification where the statute permits.
Second Or Subsequent
Fine
S$5,000 to S$20,000
Imprisonment
Up to 2 years
Structure
Fine and imprisonment
Disqualification
At least 5 years, subject to the statutory special-reasons exception.
Third Or More
Trigger
The current section 67(2A) applies where the offender has been convicted on two or more earlier qualifying occasions.
Disqualification
Life disqualification, unless the court has special reasons to impose a shorter period.
Repeat Definition
For section 67, repeat-offender treatment includes certain previous convictions under section 67 or section 68, including qualifying convictions under earlier versions of the law.
Important
The statutory fine and imprisonment ranges are not predictions of the sentence in an individual case. The court considers the specific facts and applicable sentencing law.
Driving Disqualification
First
Minimum 2 years for a first offender.
Repeat
Minimum 5 years for a repeat offender.
Life
Life disqualification where the offender has at least two earlier qualifying convictions, subject to the statutory special-reasons exception.
Start Date
The disqualification period generally starts on conviction, or on release from prison where imprisonment is imposed, according to the statutory rule.
All Classes
A drink-driving disqualification can affect the offender's entitlement to hold or obtain a driving licence and therefore is not limited to the particular vehicle driven during the offence.
Appeal
A person who intends to challenge a conviction or sentence should obtain legal advice promptly because appeal deadlines and procedural requirements apply.
How Singapore Drink-Driving Testing Works
Steps
Initial Stop and Screening
Step 1Where the statutory grounds exist, a police officer can require a preliminary breath test. The current law also gives specified immigration-officer powers at authorised checkpoints.
Arrest Where Statutory Conditions Are Met
Step 2A positive preliminary test or failure to provide a required specimen can provide the statutory basis for arrest in the circumstances set out in section 69.
Further Evidential Testing
Step 3After arrest, section 70 permits a further breath test and, where the statutory conditions apply, a blood specimen for laboratory testing.
Investigation and Charge
Step 4The police investigate the alleged offence and the Public Prosecutor determines the appropriate charge and prosecution course.
State Courts Proceedings
Step 5The matter proceeds in the State Courts criminal process. The accused may plead guilty or claim trial and the court determines the sentence if convicted.
Disqualification and Sentence
Step 6On conviction, the court applies the statutory disqualification rules and determines any fine or imprisonment.
Device
The Act defines a breath test by reference to an approved breath analysing device. Specific police equipment names should therefore not be treated as fixed statutory terminology unless confirmed by the current operational guidance.
What Happens if You Refuse a Breath or Blood Test?
Preliminary
Refusing a required preliminary breath specimen under section 69 without reasonable excuse is a separate offence carrying a first-offence fine of S$1,000 to S$5,000 or imprisonment up to 6 months, or both.
Analysis
Refusing a required section 70 specimen without reasonable excuse is also an offence. Where the person was driving or attempting to drive, the law can punish the person as if the underlying offence were under section 67.
Reasonable Excuse
Whether an excuse is legally reasonable depends on the circumstances and the statutory requirements. Medical or other grounds should be addressed through the prescribed legal process rather than assumed to excuse refusal.
Practical Point
Refusal is therefore not a safe alternative to testing and can create a separate criminal exposure.
Important Clarifications
Items
- The statute does not create a general rule that every positive preliminary breath test automatically proves the section 67 offence; the evidential and statutory process still matters.
- The first-offence imprisonment term is not mandatory under section 67; the section provides a fine or imprisonment, or both.
- For second or subsequent section 67 convictions, the statutory wording requires both a fine and imprisonment, subject to the applicable sentencing framework.
- The 2-year and 5-year figures are minimum disqualification periods, not fixed automatic bans in every case.
- Life disqualification applies after two or more earlier qualifying convictions, subject to the court's special-reasons power.
- A drink-driving conviction does not automatically establish a separate immigration or work-pass outcome; any effect on a foreigner's immigration or employment status depends on the applicable MOM, ICA or other rules.
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Common Mistakes & Legal Misconceptions
Frequently Asked Questions (FAQ)
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