Road signs in Laos generally follow those used in most European countries as set out in the Vienna Convention on Road Signs and Signals. Despite this, the country itself has never signed the Vienna Convention on Road Signs and Signal. Inscriptions on traffic signs are in Lao, the national language of Laos. However, English is also used for stop and important public places such as tourist attractions, airports, railway stations, and immigration checkpoints. Both Lao and English are used on directional signage.

Warning signs

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  Curve to left
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  Curve to right
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  Double curve, first to left
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  Double curve, first to right
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  Steep descent
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  Steep ascent
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  Road narrows
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  Road narrows on left side
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  Road narrows on right side
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  Opening bridge
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  Quayside or riverbank ahead
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  Uneven road
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  Road for bump
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  Dip
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  Soft verges
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  Slippery road
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  Loose stones
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  Falling rocks
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  Pedestrian crossing
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  Children
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  Cyclists
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  Domesticated animals
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  Wild animals
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  Traffic signals
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  Crossroads without priority
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  Crossroads with priority
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  Side road junction to left
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  Side road junction to right
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  Give way ahead
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  Stop ahead
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  Roundabout
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  Two-way traffic
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  Traffic jam ahead
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  Level crossing with barriers ahead
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  Level crossing without barriers ahead
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  Tram crossing
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  Single track level crossing
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  Multiple track level crossing
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  Level crossing countdown marker (150 m)
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  Level crossing countdown marker (100 m)
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  Level crossing countdown marker (50 m)
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  Low-flying aircraft
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  Crosswind
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  Accident
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  Other dangers
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  Traffic switchover point
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  New driver learn to drive

Priority signs

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  Stop
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  Give way
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  Priority road
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  End of priority road
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  Priority for oncoming traffic
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  Priority over oncoming traffic

Prohibition signs

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  No entry
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  Closed for all vehicles
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  No cars
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  No motorcycles
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  No cyclist
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  No mopeds
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  No trucks
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  No animal-drawn vehicles
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  No handcarts
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  No pedestrians
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  No agricultural vehicles
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  No vehicles carrying explosives
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  No vehicles carrying dangerous water pollutants
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  No vehicles carrying dangerous goods
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  No motor vehicles
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  No motor and animal-drawn vehicles
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  Maximum length
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  Maximum weight
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  Maximum width
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  Maximum height
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  Maximum speed limit
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  End of maximum speed limit
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  No left turn
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  No right turn
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  No U-turn
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  No straight
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  No overtaking
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  No overtaking by trucks
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  End of no overtaking
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  End of no overtaking by trucks
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  No parking or waiting
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  No standing or stopping
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  No parking at odd days
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  No parking at even days
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  No horns
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  End of all restrictions
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  Customs

Mandatory signs

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  Proceed straight
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  Turn left
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  Turn right
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  Proceed straight or turn left
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  Proceed straight or turn right
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  Pass onto left
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  Pass onto right
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  Roundabout
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  Bike path
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  Pedestrian path
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  Bridle path
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  Shared pedestrian and cycle path
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  Segregated pedestrian and cycle path
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  Snow chains mandatory
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  Minimum speed limit
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  End of minimum speed limit
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  Route for vehicles carrying dangerous goods (straight)
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  Route for vehicles carrying dangerous goods (left)
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  Route for vehicles carrying dangerous goods (right)

Informatory signs

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  Pedestrian crosssing
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  One-way street
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  One-way street
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  One-way street
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  Living street
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  End of living street
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  Parking
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  Bus stop
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  Tram stop
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  Tunnel
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  End of tunnel
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  Hospital
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  First aid
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  Dead end
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  Lpg station
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  Telephone
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  Emergency telephone
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  Hotel
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  Breakdown service
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  Camping or caravan
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  Restaurant
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  Road for motorized begins
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  Road for motorized ends
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  Emergency stopping lot
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  Emergency ramp
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  Minimum speed limit for different lane
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  Maximum speed limit for different lane
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  Bus only lane
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  Split traffic lane
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  Merging traffic lane
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  Preselection lane
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  Expressway begins
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  Expressway ends
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  Countdown marker
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  Countdown marker
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  Countdown marker

Temporary signs

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  Roadworks
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  Traffic lights
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  Slippery road
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  Soft verges
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  Road narrows
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  Road narrows on left side
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  Road narrows on right side
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  Two-way traffic
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  Loose gravel
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  Traffic queues
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  Other dangers
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  Preselection lane

Additional plates

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  Distance
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  Side extension
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  Side extension
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  Side extension
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  Length
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  Beginning
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  Continuation
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  End
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  Sign of applies to trucks
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  Sign of applies to tralier
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  Direction of priority road
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  Disabled parking

Traffic lights

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  Red
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  Red yellow
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  Green
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  Yellow