Thailand's Motorway Limit Reaches 120 km/h in 2026

Thailand’s motorway limit reaches 120 km/h, dropping to 90 km/h on rural roads and 80 km/h in towns. Speeding by more than 30 km/h over the limit can bring a fine as high as THB 5,000, roughly EUR 130, with a possible court appearance for serious cases. The minimum driving age is 18, and traffic keeps to the left.

Speed limits are 80 km/h in urban areas, 90 km/h on rural roads, and 120 km/h on motorways. The blood alcohol limit is 0.05% BAC. You must be at least 18 to drive.

Unlike neighboring Vietnam, Thailand drives on the left — take extra care if crossing the border.

Emergency Numbers in Thailand

General Emergency: 191 | Police: 191 | Ambulance: 1669 | Fire: 199

Save these numbers before you start driving. In Thailand, emergency calls are free from any phone.

Speed Limits in Thailand

The default speed limits for passenger cars in Thailand are 80 km/h in built-up areas, 90 km/h on rural roads, and 120 km/h on motorways (WHO 2023 Thailand profile). Many town streets carry lower signed limits.

Trucks and vehicles over 3.5 tonnes have lower limits: 50 km/h urban, 80 km/h rural, and 100 km/h on motorways.

For comparison, motorway limits in nearby countries: Cambodia (100 km/h), Malaysia (110 km/h).

Important: Posted signs always override default limits. Watch for temporary restrictions in construction zones, near schools, and in residential areas.

Speeding Fines and Penalties

Speeding fines in Thailand escalate based on how far you exceed the limit. Exceeding by up to 10 km/h: THB 500-1,000 (approx. EUR 13-26). Exceeding by 11-20 km/h: THB 1,000-2,000 (approx. EUR 26-52). Over 20 km/h: THB 2,000-5,000 (approx. EUR 52-130) + possible court appearance or more.

Other common fines:

• Mobile phone use while driving: THB 400-1,000 (approx. EUR 10-26)
• Running a red light: THB 1,000 (approx. EUR 26)
• Seatbelt violation: THB 500 (approx. EUR 13)

Traffic Rules and Regulations

Drive on the left side of the road. Overtake on the right. At roundabouts, traffic flows clockwise — give way to vehicles already in the roundabout.

Seatbelts are mandatory for all occupants. Children must use appropriate restraint systems based on their age and height.

Using a hand-held phone while driving is illegal. The fine is THB 400-1,000 (approx. EUR 10-26). Use hands-free devices only.

Use headlights in poor visibility, tunnels, and at night. Some areas require headlights at all times.

At unmarked junctions, slow right down and be ready to give way: the “priority to the right” rule used in much of continental Europe is not the rule here, so follow the signs and the local highway code.

Drink-Driving Laws and Alcohol Limits

The legal blood alcohol limit in Thailand is 0.05% BAC. This is higher than Vietnam (0.00% (zero tolerance) BAC). Exceeding this limit results in fines, licence suspension, and possible criminal charges. For novice drivers and professional drivers, stricter limits may apply.

The safest approach is to not drink at all if you will be driving. Alcohol affects reaction time and judgement regardless of the legal limit.

Tyre Requirements and Regulations

Due to Thailand’s tropical climate, winter tyres are not required. Standard tyres suitable for wet and dry conditions are appropriate year-round.

The legal minimum tread depth is 1.6 mm.

Studded tyres are prohibited in Thailand.

For detailed tyre law information, see our Tyre Laws in Thailand guide.

Mandatory Vehicle Equipment

Vehicles in Thailand must carry the following:

Required:

• Warning triangle

Recommended:

• First aid kit
• Fire extinguisher

Keep all equipment accessible — not buried under luggage. Police may check during routine stops.

Driving License Requirements

An International Driving Permit (IDP) is required for foreign drivers in Thailand. Always carry your original driving licence — photocopies are not accepted. Your foreign licence is valid for up to 3 months.

The minimum driving age is 18 years.

IDP required. Valid for the period of your entry permit. Drives on the left.

Parking and Fuel

Parking in major cities can be limited and expensive. Shopping centres and commercial areas usually have dedicated car parks. Read signs carefully to avoid towing.

The box at the top shows the Bangkok retail prices published by the Energy Policy and Planning Office (EPPO) for Gasohol 95 E10 and diesel, with their date.

Most fuel stations accept major credit and debit cards. In rural areas, keep your tank above half — stations may be far apart.

Seasonal Driving Conditions

Thailand has a tropical heat and monsoon rains. The main driving hazard is heavy rainfall — roads can flood quickly and visibility drops sharply during downpours. Reduce speed in rain and avoid crossing flooded sections. Road surfaces may deteriorate during the wet season.

Useful Driving Phrases in Thai

Knowing a few phrases in Thai helps at fuel stations, toll booths, and during police checks:

Download the Thai language pack in your translation app for offline use.

Practical Driving Tips for Thailand

• If switching from right-hand traffic, concentrate on turns and roundabouts — these are where most mistakes happen.
• Download offline maps of Thailand before your trip — mobile signal can be unreliable on rural roads.
• Take a break every 2 hours on long drives. Fatigue is a leading cause of road accidents.
• Use our interactive tools on this page — compare rules with your home country and calculate potential fines before you set off.