Thai road signs, without the guesswork.
This independent reference includes signs covered in the current DLT learner manual plus additional official road-sign references. Inclusion does not mean a sign appears in every theory test.
Prohibition signs · red circle, forbidden action
Stop
Give way
Give way to oncoming traffic
No overtaking
No entry
No U-turn to the right
No U-turn to the left
No left turn
No right turn
No changing lanes to the left
No changing lanes to the right
No right turn or U-turn
No left turn or U-turn
No cars
No trucks
No motorcycles
No trailers
No 3-wheeled motor vehicles
No tricycle
No bicycles
No carts
No agricultural vehicles
No animal-drawn carts
No motor vehicles
No tricycles, bicycles, or motorcycles
No motorcycles or 3-wheeled motor vehicles
No horn
No pedestrians
No parking
No stopping
Checkpoint stop
Speed limit (10 km/h)
Speed limit (20 km/h)
Speed limit (30 km/h)
Speed limit (40 km/h)
Speed limit (45 km/h)
Speed limit (50 km/h)
Speed limit (60 km/h)
Speed limit (70 km/h)
Speed limit (80 km/h)
Speed limit (90 km/h)
Speed limit (100 km/h)
Speed limit (110 km/h)
Speed limit (120 km/h)
Weight limit (10 tonnes)
Maximum weight 25 tonnes
Width limit (2.5 metres)
Height limit (2.5 metres)
Length limit (10 metres)
End of restrictions
Mandatory signs · blue circle, required action
Warning & work-zone signs · hazards, traffic changes and temporary controls
Left curve ahead
Curve ahead
Sharp left curve ahead
Sharp curve ahead
Reverse curve ahead
Reverse curve ahead, first to the right
Sharp reverse curves ahead — first left
Sharp reverse curve ahead, first to the right
Winding road ahead, first to the left
Winding road ahead
Crossroads ahead
Y-junction ahead
Side road ahead on the left
Side road ahead
Staggered crossroads ahead
Staggered crossroads ahead
Skewed side road ahead on the left
Skewed side road ahead
Skewed side road — ahead-left branch
Skewed side road — ahead-right branch
Roundabout ahead
Roadway narrows ahead on both sides
Roadway narrows ahead on the left side
Roadway narrows ahead on the right side
Narrow bridge ahead
Left lane ends ahead
Right lane ends ahead
Railway crossing without barrier
Railway crossing with barrier
Railway crossing on side road ahead
Width restriction ahead (2.5 metres)
Height restriction ahead (2.5 metres)
Steep climb ahead
Steep descent ahead
Speed hump
Uneven road surface ahead
Dip ahead
Slippery road
Loose road surface ahead
Danger of falling rocks ahead
Opening bridge ahead
Carriageway shifts left ahead
Carriageway shifts right ahead
Added lane ahead
Added lane ahead from the right
Side road merging from left ahead
Side road merging from right ahead
Divided road ahead
Divided road ends ahead
U-turn point ahead on the right
U-turn point ahead on the left
Two-way traffic ahead
Traffic signals ahead
Stop ahead
Give way ahead
Pedestrian crossing ahead
School zone
Animals ahead
Low-flying aircraft ahead
Dangerous zone
No-overtaking zone
Roadway splits ahead
Single chevron right marker
Multiple chevron right marker
Large arrow right marker
Single chevron left marker
Multiple chevron left marker
Large arrow left marker
Hazard chevron marker
Large left-or-right alignment marker
Obstruction marker — pass either side
Left obstruction marker
Obstruction marker — pass on right
Zipper merge ahead
T-junction ahead
Advisory speed warning — 30 km/h
City limit, reduce speed
City limit, reduce speed (Thai and English)
Use low gear
Road survey ahead
Construction ahead
Workers ahead
Construction machinery ahead
Work-zone detour to the left
Work-zone detour to the right
Traffic shifts right
Two lanes shift right
Right lane shifts; left continues
Traffic shifts left, then right
Two lanes shift left, then right
Three lanes shift left, then right
Right lane merges left
Left lane merges into two lanes
Right lane merges into two lanes
Two right lanes merge left
Work-zone direction marker — left
Work-zone direction marker — right
Road work ahead
Detour to the left ahead
Detour to the right ahead
Shoulder work ahead
Construction materials on shoulder
Use detour to the right
Use detour to the left
Right lane closed in work zone
Information & guide signs · routes, directions, services and facilities
Advance guide sign
Food
Petrol station
Destination sign
Destination direction sign
Distance sign
Village name sign
Pedestrian crossing location
Hospital
One-way street — left
Dead end
Main-road and frontage-road access
U-turn point
Controlled-access highway begins
Controlled-access highway ends
Bus lane begins
Bus lane information
Disabled-person facility
Bus lane ends
High-occupancy vehicle lane information
National highway route marker
Asian Highway route marker
Scenic area ahead — distance
Rural road route marker
Airport
Frontage road ahead
Put sign knowledge into practice.
Recognising a sign is the first step. Use broader signs-and-signals practice to apply what you reviewed here.
