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Thailand traffic law report

Source agencyDepartment of Land Transport (DLT)

Last updated12 February 2026

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Key findings

Theory test pass rate is 62% (2023, Department of Land Transport)
Road fatalities: 17,497 deaths in 2023 — Down 5% from 2022
4.2 million tests administered per year by Department of Land Transport
Most challenging topic: Traffic Signs (28% fail rate)

Quick facts

Theory test questions50 questions, 45 correct required to pass

Driving sideLeft-hand traffic

License validity5 years (2 years for first license)

Color reaction testColor blindness and reaction time tests required

Training requirement15 hours minimum at DLT-approved school

BAC limit0.05% general, 0.02% for commercial/new drivers

Test statistics

Pass rate65% or higher50–64%Below 50%

Theory test pass rate

62%Department of Land Transport (2023)

Practical test pass rate

55%Department of Land Transport (2023)

Tests administered per year

4.2 millionDLT Thailand (2023)

Speed limits

Urban50-80 km/h

Rural / national roads90 km/h

Motorway / highway120 km/h

Most challenging topics

1. Traffic Signs
28% fail rate
Thai and international signage recognition
2. Right-of-Way
25% fail rate
Priority rules at intersections and U-turns
3. Speed Regulations
23% fail rate
Variable speed limits by road type and zone
4. DUI Laws
20% fail rate
Strict alcohol limits and checkpoint procedures
5. Motorcycle Rules
18% fail rate
Helmet laws, lane usage, and passenger limits

Road safety

Road fatalities17,497 deathsThai Road Safety Centre (ThaiRSC) (2023)

TrendDown 5% from 2022

Penalties & fines

Speeding: Up to THB 4,000 fine (amended 2024)
Driving under influence: THB 5,000-20,000 fine, imprisonment up to 1 year, license revocation
Points system: 12 points system; suspension at 0 points
Mobile phone use: Up to THB 4,000 fine (increased under recent amendments)

Recent law changes

2024
Stricter DUI enforcement with random breathalyzer checkpoints expanded
2023
New point-based license system (12 points) fully implemented
2022
Mandatory rear seatbelt enforcement with fines (Road Traffic Act No.13, effective September 2022)

Sources & methodology

All statistics in this report are sourced from official government agencies and publicly available data. AutoviaTest is an independent educational platform and is not affiliated with any government testing agency.

Data last verified: 2026-02-12

Primary sources

Test statistics · 2023Department of Land Transport Road safety data · 2023Thai Road Safety Centre (ThaiRSC)Official regulatory bodyDepartment of Land Transport (DLT)

Cite this report

AutoviaTest. (2026, February 12). Thailand traffic law report: Driving test statistics. https://autoviatest.com/en/traffic-law-reports/thailand

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Thailand Driving Stats

Theory pass rate62%Practical pass rate55%Motorway speed limit120 km/hRoad fatalities (2023)17,497 deaths

Source: AutoviaTest | CC BY 4.0

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