Thailand license plates explained

Reading a plate: three parts

Every standard Thai car and motorbike plate has the same three parts, and once you can read them the rest is just memorizing a color code. At the top is the registration ID — usually two Thai consonant letters followed by up to four digits (for example กข 1234), with a leading number added in front once a province exhausts a letter pair (Bangkok has done this since 2012, giving formats like 1กข 1234). Underneath that is the province of registration, printed in full in Thai script. And wrapping the whole thing is the plate color — background and lettering — which is what actually tells you what kind of vehicle you're looking at. The dimensions, colors and layout are all set by Ministry of Transport regulation, not by the dealer or the owner.

White plates — private cars, vans, pick-ups & motorbikes

White is the plate you'll see on the overwhelming majority of private vehicles, but the lettering color splits it into three distinct sub-categories:

• White background, black lettering — private passenger cars seating up to seven (including four-door pick-up trucks), and private motorcycles. This is the everyday plate.
• White background, blue lettering — private vans and other vehicles seating more than seven people.
• White background, green lettering — private two-door pick-up trucks.

None of these are for hire — if a white-plated vehicle is being used to carry paying passengers commercially, it's operating outside its registered category.

Yellow plates — taxis & commercial passenger transport

Yellow is the commercial-passenger color, and again the lettering does the real work of telling categories apart:

• Yellow, black lettering — taxis and hired vehicles/motorcycles carrying up to seven passengers.
• Yellow, red lettering — inter-provincial taxis.
• Yellow, blue lettering — metered four-wheel taxis (the standard Bangkok meter taxi).
• Yellow, green lettering — three-wheeled tuk-tuk taxis.
• Yellow, blue lettering (mini trucks) — public "Subaru"-type mini-truck taxis, a regional shared-transport style.

Hired motorcycles (the vest-wearing motorbike taxis common in Bangkok) also carry a yellow plate with black lettering, distinguishing them from the white plates on private bikes.

Green plates — tourist, rental & business-service vehicles

An aquamarine-green background with white or black lettering marks business-, tourist- and rental-service vehicles — this is the category that covers car rental company fleets, limousine and hotel/airport transfer services, and pre-booked tourist transport that isn't a metered street taxi. It's a separate rule from the green lettering used on white-background private pick-up trucks (section 02) — the background color and the lettering color trigger different classifications, so it's worth double-checking which one you're actually looking at.

Red plates — temporary trade plates, and their restrictions

A red background with black lettering is a temporary trade (dealer) plate, most often seen on a car in the weeks between purchase and the arrival of its permanent registration — new-car buyers commonly drive on red plates while paperwork is processed. Unlike every other plate on this page, red plates come with real, enforceable restrictions:

• The vehicle generally cannot be driven outside the province where it was purchased without prior permission, and each trip out of the specified area needs separate authorization with dates and destination.
• Expressways are off-limits to red-plated vehicles.
• Driving after dark may require separate permission from the authorities.
• The driver must carry all vehicle documents, a valid driving licence and ID at all times — police are authorized to stop a red-plated vehicle for a document check even with no traffic offense.

If you're buying a car in Thailand, budget for a short red-plate window and don't plan a cross-province trip on one without checking the rules first — see our companion guide on buying a car in Thailand.

Orange, blue & black plates — agricultural, government & diplomatic

• Orange background, black lettering — small trailers, road rollers, tractors and other agricultural vehicles.
• Blue background, white lettering — special-status vehicles including consular delegation cars, embassy special-agency vehicles and international organization vehicles, each distinguished by a specific leading Thai letter.
• Black background, white lettering (non-reflective) — diplomatic agents' vehicles, formatted differently from ordinary plates (a status letter, a country/organization code, and a serial number). Honorary consuls' vehicles use black lettering on a gray background instead.

Government ministries and state enterprises also use distinctly colored plates outside the standard private/commercial system. If you see a plate that doesn't match any color combination on this page, it's most likely one of these specialist categories, or a royal, police or military vehicle — all of which fall outside the DLT's normal registration system and are governed by their own regulations.

The province name underneath

Below the letters and numbers, every standard plate shows the province of registration written out in full in Thai script — for example เชียงใหม่ for Chiang Mai, ภูเก็ต for Phuket, ชลบุรี for Chonburi, or กรุงเทพมหานคร for Bangkok. This tells you only where the vehicle is registered, not where the owner currently lives or drives — a huge share of vehicles registered in one province operate daily in another, especially around Bangkok. Bus and truck plates instead show a numerical provincial code, and diplomatic plates use a country/organization code rather than a province at all.

Auction 'Super Number' plates

Occasionally you'll spot a plate with a colorful decorative background instead of the plain reflective color — that's a "Super Number" (ทะเบียนรถเลขสวย) plate. Since 2003 the DLT has auctioned off registration numbers considered auspicious or in demand — repeated digits, straight runs, round thousands and matched pairs — with winning bidders receiving a decorative province-specific background alongside the number. These auctions have produced some of the highest prices ever paid for a license plate anywhere in the world, with Bangkok plates selling for tens of millions of baht. The decorative background is purely cosmetic; the vehicle underneath is still registered and regulated the same way as any other private car.

Motorcycle plates: a different layout

Motorcycle plates are physically smaller than car plates and lay information out in three horizontal rows instead of two: the series letters and any leading number on top, the province of registration in the middle row, and the serial number on the bottom. The color rule is simpler than for cars — black lettering on a white background for private motorcycles, and black lettering on a yellow background for hired (taxi) motorcycles. If you're buying or renting a bike, see buying a motorbike in Thailand and renting a motorbike in Thailand for the registration and insurance side of things.

Newcomer mistakes to avoid

Frequently asked

Sources & References

• Department of Land Transport, Thailand

Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.