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Driving Under the Influence (DUI)

Driving Under the Influence (DUI) commonly called “drunk driving”, is the offense of driving or operating a motor vehicle while one’s blood alcohol content (BAC) is more than the amount of the set legal limit, which makes you unable to operate your vehicle safely.

What is the legal Blood Alcohol Content in Thailand?

Thailand’s legal Blood Alcohol Content (BAC) is 0.05% or 0.5 grams per liter of blood for drivers who have had their licenses for over five years, and 0.02% or 0.2 grams for the following:

  1. Newer drivers who have possessed their license for less than five years
  2. Drivers under 20 years of age
  3. Holding temporary driving license
  4. Drivers who has a driving license for another type of vehicle that is not interchangeable
  5. Driving without a driving license or drivers license has been suspended or revoked

 

A person is considered to be drunk if the amount of alcohol measured is more than the legal BAC.

 

Breath testing stops are becoming more common to try to reduce drunk driving. Police Officers have the authority to test any driver at any time. They are using a Breathalyzer to detect the BAC at traffic stops. This device uses the amount of alcohol in exhaled breath to calculate the amount of alcohol in a person’s blood.

 

Do I face jail time for Drunk Driving?

Violators will face a heavy fine and/or imprisonment, license suspension or permanent license revocation. You may also need to undergo community service.

Am I going to lose my license?

A person charged with Driving Under the Influence may have their license confiscated for some period of time. Revocation of Driving License is possible especially in the event of causing death of another person.

What are the penalties for Driving Under the Influence?

The penalties for DUI is an imprisonment for a term not exceeding 1 year and/or a fine from 5,000 to 20,000 Baht. Moreover, suspension of driving license for at least 6 months or license revocation.

 

If the offence causes physical or mental injury to another person, the offender shall be liable to an imprisonment for a term of at least 1 to 5 years, and to a fine from 20,000 to 100,000 Baht, driving license suspension for a period of not less than 1 year or license revocation.

 

For causing serious injury to another person, the offender shall be liable to an imprisonment from 2 to 6 years, and to a fine from 40,000 to 120,000 Baht, and driving license suspension for a period of not less than 2 years or license revocation.

 

If the offence causes death to another person, the offender shall be liable to an imprisonment from 3 to 10 years, and to a fine from 60,000 to 200,000 Baht, and the Court shall order the revocation of his or her license.

 

Apart from the penalties mentioned above, they authorities may also require community service. If a driver is a Foreign National, they may also risk deportation, depending on the severity of the case.

 

What should I do if I am charged with Driving Under the Influence?

It is advisable that you comply and not refuse the Breathalyzer test. If your test results indicate that you have exceeded the maximum blood alcohol limit, the Police will ask you for your driver’s license and you then have to make yourself ready to pay a fine. Violent behavior may result to greater penalties. Therefore, it would be best to cooperate and not to fight with the Police Officers. Depending on the severity of your charge, you may be given a court date and/or be asked to spend the night in jail. It is best to contact a DUI lawyer who can assist you with your case.

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DO I FACE JAIL TIME FOR DRUNK DRIVING?

Violators will face a heavy fine and/or imprisonment, license suspension or permanent license revocation. You may also need to undergo community service.

AM I GOING TO LOSE MY LICENSE?

A person charged with Driving Under the Influence may have their license confiscated for some period of time. Revocation of Driving License is possible especially in the event of causing death of another person.

WHAT ARE THE PENALTIES FOR DRIVING UNDER THE INFLUENCE?

The penalties for DUI is an imprisonment for a term not exceeding 1 year and/or a fine from 5,000 to 20,000 Baht. Moreover, suspension of driving license for at least 6 months or license revocation. If the offence causes physical or mental injury to another person, the offender shall be liable to an imprisonment for a term of at least 1 to 5 years, and to a fine from 20,000 to 100,000 Baht, driving license suspension for a period of not less than 1 year or license revocation. For causing serious injury to another person, the offender shall be liable to an imprisonment from 2 to 6 years, and to a fine from 40,000 to 120,000 Baht, and driving license suspension for a period of not less than 2 years or license revocation. If the offence causes death to another person, the offender shall be liable to an imprisonment from 3 to 10 years, and to a fine from 60,000 to 200,000 Baht, and the Court shall order the revocation of his or her license. Apart from the penalties mentioned above, they authorities may also require community service. If a driver is a Foreign National, they may also risk deportation, depending on the severity of the case.

WHAT SHOULD I DO IF I AM CHARGED WITH DRIVING UNDER THE INFLUENCE?

It is advisable that you comply and not refuse the Breathalyzer test. If your test results indicate that you have exceeded the maximum blood alcohol limit, the Police will ask you for your driver’s license and you then have to make yourself ready to pay a fine. Violent behavior may result to greater penalties. Therefore, it would be best to cooperate and not to fight with the Police Officers. Depending on the severity of your charge, you may be given a court date and/or be asked to spend the night in jail. It is best to contact a DUI lawyer who can assist you with your case.

WHAT IS THE LEGAL BLOOD ALCOHOL CONTENT IN THAILAND?

Thailand’s legal Blood Alcohol Content (BAC) is 0.05% or 0.5 grams per liter of blood for drivers who have had their licenses for over five years, and 0.02% or 0.2 grams for the following: Newer drivers who have possessed their license for less than five years Drivers under 20 years of age Holding temporary driving license Drivers who has a driving license for another type of vehicle that is not interchangeable Driving without a driving license or drivers license has been suspended or revoked A person is considered to be drunk if the amount of alcohol measured is more than the legal BAC. Breath testing stops are becoming more common to try to reduce drunk driving. Police Officers have the authority to test any driver at any time. They are using a Breathalyzer to detect the BAC at traffic stops. This device uses the amount of alcohol in exhaled breath to calculate the amount of alcohol in a person’s blood.
Driving Under the Influence (DUI)

FAQs Relating to Driving Under the Influence

Driving Under the Influence (DUI), commonly known as “drunk driving,” is the offense of operating a motor vehicle with a blood alcohol content (BAC) above the legal limit, which impairs your ability to drive safely.

DO I FACE JAIL TIME FOR DRUNK DRIVING?

Yes. Depending on the severity of the offence, violators may face a fine and/or imprisonment, driver’s license suspension or permanent revocation, and may also be required to perform community service. Penalties are more severe if the offence causes injury, serious injury, or death.

AM I GOING TO LOSE MY LICENSE?

Yes. If you are charged with Driving Under the Influence, your license may be suspended for a period of time, and in severe cases — such as causing injury, serious injury, or death — it may be permanently revoked.

WHAT ARE THE PENALTIES FOR DRIVING UNDER THE INFLUENCE?

Penalties in Thailand vary depending on the severity of the offence:

Basic offence (no injury)
  • Imprisonment: up to 1 year
  • Fine: 5,000–20,000 Baht
  • Driver’s license: suspension for at least 6 months or revocation

Offence causing injury
  • Imprisonment: 1–5 years
  • Fine: 20,000–100,000 Baht
  • Driver’s license: suspension for at least 1 year or revocation

Offence causing serious injury
  • Imprisonment: 2–6 years
  • Fine: 40,000–120,000 Baht
  • Driver’s license: suspension for at least 2 years or revocation

Offence causing death
  • Imprisonment: 3–10 years
  • Fine: 60,000–200,000 Baht
  • Driver’s license: mandatory revocation

Additional notes:
  • Authorities may also require community service.
  • Foreign nationals may risk deportation, depending on the severity of the case.
  • Repeat offences within 2 years carry higher penalties: imprisonment up to 2 years, fine 50,000–100,000 Baht, and license suspension for at least 1 year or revocation.

WHAT SHOULD I DO IF I AM CHARGED WITH DRIVING UNDER THE INFLUENCE?

  • Comply with the police and take the Breathalyzer test. Refusing the test is treated as a DUI offence and may result in the same penalties as a positive result.

  • Be cooperative and calm. Avoid arguing or behaving violently, as this can lead to harsher penalties.

  • Prepare to pay fines or face imprisonment. For a first offence without injury, penalties may include imprisonment up to 1 year, a fine of 5,000–20,000 Baht, and suspension or revocation of your driver’s license.

  • Seek legal assistance. A DUI lawyer can guide you through the process and help protect your rights.

WHAT IS THE LEGAL BLOOD ALCOHOL CONTENT IN THAILAND?

  • 0.05% BAC (0.5 g/L) — for drivers who have held their license for more than 5 years.
  • 0.02% BAC (0.2 g/L) — for:
    • New drivers (<5 years licensed)
    • Drivers under 20 years old
    • Drivers with a temporary license
    • Drivers using a license for a different vehicle type
    • Drivers without a license or whose license is suspended/revoked

A driver is considered over the limit if their measured BAC exceeds these thresholds.

Enforcement:

  • Police can test any driver at any time using a Breathalyzer, which estimates BAC from exhaled breath.
  • Breath-testing checkpoints are increasingly common to reduce drunk driving.

Need Help with a DUI Case in Thailand?

If you are facing a DUI charge, it is important to act quickly and seek professional legal assistance. An experienced lawyer can guide you through the process, protect your rights, and help you minimize penalties such as fines, imprisonment, or license suspension. Contact our legal team today to discuss your case and get expert advice tailored to your situation.

LEGAL DISCLAIMER: This content is for general informational purposes only and does not constitute legal advice. Laws and regulations may change, and outcomes depend on specific circumstances. Always consult a qualified lawyer for advice regarding your individual case.

This content has last been been reviewed and verified on January 2026 by:
Picture of  Noppadol Paiviroj (Barrister)
Noppadol Paiviroj (Barrister)

Licensed Attorney-At-Law | Licensed Notarial Services Attorney, The Lawyers Council of Thailand
Specialization: Civil Thai Law and Litigation for more than 30 Years