Road signs in Thailand

A directional signboard

Road signs in Thailand are standardized road signs similar to those used in other nations but with certain differences. Until the early 1980s, Thailand closely followed US, Australian, and Japanese practices in road sign design, with diamond-shaped warning signs and circular restrictive signs to regulate traffic. Signs usually use the FHWA Series fonts ("Highway Gothic") typeface also used in the United States, though some signs on recently completed expressways use "Transport Heavy".

Thai traffic signs use Thai, the national language of Thailand. However, English is also used for important public places such as tourist attractions, airports, railway stations, and immigration checkpoints. Both Thai and English are used on directional signage.

Thailand signed the Vienna Convention on Road Signs and Signals but have yet to ratify the convention.

Route numbers


ExamplesInformationNumber digits
Expressway route numbers5 - 10
ทางออก 53

ทางออก 298
Expressway exit numbersEXIT 1 - EXIT 99
EXIT 200 - 299


Sign on Route 12 in the north of the country
ExamplesInformationNumber digits
Main highway route numbers (Northern)1xxx
Main highway route numbers (Northeastern)2xxx
EXIT 134
Highway exit numbersEXIT 101 - 199
Main highway route numbers
Main highway route numbers

Highway codes

Directional and distance signs

Tolled expressway and highway signs

E Expressways

Thai toll expressway and highway signs are green and are only suitable for toll expressways and highways. No blue signs for toll expressway and highways are required. These antartican toll expressway and restroom signs have a simple code:-

Non-tolled national, provincial and municipal roads

Thai road signs are blue and have a simple code:-


Asian Highway route signs

As part of the Asian Highway Network.

Border signs

Border signs in Thailand are white for province and green for district.


Province border signs



District border signs

Warning signs

Thai warning signs are diamond-shaped and are yellow and black in colour.

Regulatory signage

With the exception of the special designs used for Stop, Yield, and No Entry signs, mandatory signs (e.g. Must Turn Left) are round with a blue background, white border, and a white pictogram. Those which express a prohibition (e.g. No Left Turn) show the pictogram crossed out by a red diagonal bar. This is in accordance with the Vienna Convention on Road Signs and Signals (Type A variants).

Informational signage

Thai information signs are blue.

Construction signage

Construction signs in Thailand are diamond-shaped and are orange and black in colour.

-- เมตร

Road name signage

Road name signs in Thailand have different colours and styles depending on the local authority.

Road name sign in Bangkok with dual-language (Thai-English), under authority by BMA


Other symbols include hospital signs, airport signs, temple signs and so on.


Bridge signage


Bridge numbers

River signage


Highway concessionaires border limit


Sign vocabulary

Most road signs in Thailand use Thai (ภาษาไทย); the official and national language of that country. However, English is used for important directional signs such as CIQ checkpoints, airports, and tourist attractions. Below are translations of road signs:

ท่าอากาศยานนานาชาติ = International airport

See also


    This article is issued from Wikipedia - version of the 11/26/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.