- Source: Road signs in Thailand
Road signs in Thailand are standardized road signs similar to those used in other nations but much of it resembles road signage systems used in South American countries with certain differences, such as using a blue circle instead of a red-bordered white circle to indicate mandatory actions. Until the early 1980s, Thailand closely followed American, European, Australian, and Japanese practices in road sign design, with diamond-shaped warning signs and circular restrictive signs to regulate traffic. The Department of Railway maintains a standard on the typeface used in the sign, with custom made type for Thai text, unofficially named "Thang Luang" (อักษรทางหลวง) and a small derivation of FHWA Series fonts ("Highway Gothic") typeface, which is used on American road signage, for Latin text. In most Bangkok Metropolitan Area's routes, TS Lopburi is still used.
Thai traffic signs use Thai, the national language of Thailand, and distances and other measurements are expressed in compliance with the International System of Units. However, English is also used for important public places such as tourist attractions, airports, railway stations, and immigration checkpoints. Both Thai and romanizations are used on directional signage.
Thailand is a signatory to the 1968 Vienna Convention on Road Signs and Signals, but has yet to fully ratify the convention.
History
The first year for road signs in Thailand was largely unknown, but it can be dated back as far as the start of the 1920s.
Thailand is the first country in Asia to adopt MUTCD standard yellow diamond warning signs, in 1940. For regulatory signs, rectangular signs were first used and were similar in design to North America, but they have been replaced in the mid-1950s by European-style red-bordered white circle signs.
In 2004, mandatory signs were switched from South American design to European design.
Regulatory signs
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).
= Priority Regulating Signs
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= Prohibitory or Restrictive Signs
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= Mandatory Signs
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= Other regulatory signs
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= General regulatory signs
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= Mandatory signs for bicycle paths
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= Optional signs
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= Superseded regulatory signs
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These signs have been superseded, but are still around.
Thai warning signs are diamond-shaped and are yellow and black in colour.
= Curves and Turns
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= Intersections
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= Roundabout
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= Road narrows
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= Narrow bridge
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= Lane transitions
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= Railway crossing
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= Lane width restrictions
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= Lane height restrictions
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= Hills and Grades
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= Lane conditions
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= Opening bridge
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= Lane shiftings
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= Lane mergings
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= Divided highways
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= Turning back
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= Two-way traffic
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= Advance traffic control
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= No passing zone
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= Lane split, Curve and Hazard markers
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Lane split
Curve markers
Hazard markers
= Alternate merging
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= Supplementary plates
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= Superseded warning signs
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These signs have been superseded, but are still around.
= Speed camera zone warning signs
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= Emergency stop warning sign (Standard form of the Department of Highways)
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= Warning signs on steep slopes. for heavy trucks (Standard form of the Department of Highways)
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= High hanging warning sign (Mast arm) (Standard type of the Department of Rural Roads)
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= Water overflow warning sign (Standard form of the Department of Rural Roads)
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= Warning signs for safety facilitation and improvement of dangerous points. In the case of installing a vehicle warning device entering an intersection (Standard form of the Department of Rural Roads)
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= railway warning sign (Standard road work form for local administrative organizations, Department of Rural Roads)
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= Combination signs
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= Miscellaneous
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The Department of Highways does not provide signs dealing with some other road and highway situations. Many cities have their own sign standards dealing with these situations.
Construction signs in Thailand are diamond-shaped and are orange and black in colour.
= Superseded signs
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These signs have been superseded, but are still around.
Highways
= Tolled expressway and highway signs
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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:-
Blue with white signs for expressway names of closed toll systems.
= National Highway
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National Highway use sign
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Advance turn arrow signs
Directional arrow signs
Informational signs
Thai Informational signs are white or blue.
Informational signs
= Kilometer signs
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Kilometer signs
= Exit number signs
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Exit number signs
= Road name signage
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Road name signs in Thailand have different colours and styles depending on the local authority.
= Symbols
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Other symbols include hospital signs, airport signs, temple signs and so on.
= Curb markings
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Alternating red and white paint means "no parking". Alternating yellow and white markings mean short-term parking or a bus stop. A white rectangle painted on the road indicates a parking zone. Multiple diagonal white lines mean parking for motorbikes only.
= Sign vocabulary
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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:
See also
Integrated Transport Information System
Thai highway network
Transportation in Thailand
References
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