This article covers traffic warning signs. We’ll look at warning signs and what they mean. They’re made up of warning symbols drawn on a white background inside a red triangle. Traffic signs can be studied in three categories.
- Warning signs
- Regulatory signs
- Informational signs
Warning Signs
Traffic signs that warn of hazards are shown with specific symbols inside a red triangle.

Dangerous Right Bend
A curve bending right inside a red triangle.
Warns of an approaching dangerous right bend.
Reduce speed. Shift to a lower gear. Do not overtake the vehicle ahead. No stopping or parking.

Dangerous Left Bend
A curve bending left inside a red triangle.
Warns of an approaching dangerous left bend.
Reduce speed. Shift to a lower gear. Do not overtake the vehicle ahead. No stopping or parking.

Series of Dangerous Bends, First to the Right
Warns of an approaching series of dangerous bends, the first one to the right.
Reduce speed. Shift to a lower gear. Do not overtake the vehicle ahead. No stopping or parking

Series of Dangerous Bends, First to the Left
This sign warns of an approaching series of dangerous bends, the first one to the left.
Reduce speed. Shift to a lower gear. Do not overtake the vehicle ahead. No stopping or parking.

Steep Descent
There’s a dangerously steep downhill section of road ahead. Reduce speed. Descend in the gear you ascended with. Follow any other posted signs. Do not brake hard. Turning off the engine and shifting to neutral is dangerous and prohibited.

Steep Ascent
An uphill slope and “10%” inside a red triangle. This traffic sign warns of a dangerously steep uphill section of road ahead. When you see this sign, drive in the appropriate gear. Follow other traffic signs.

Road Narrows on Both Sides
This warning sign shows the road narrows from both sides. Reduce speed. Follow any restrictions indicated by other signs (such as give way to oncoming traffic, or which direction has priority).

Road Narrows on the Right
This warning sign shows the road ahead narrows from the right. Reduce speed. Follow any restrictions indicated by other signs (such as give way to oncoming traffic, or which direction has priority).

Road Narrows on the Left
This warning sign shows the road ahead narrows from the left. Reduce speed and follow the restrictions and rules indicated by other signs.

Opening (Draw)bridge
A drawbridge inside a red triangle frame. This traffic sign indicates a drawbridge on the road ahead. Slow down when you see this sign. Stop if necessary.

Road Ends at a Sea or River Shore
A car falling into water. This traffic sign shows the road ahead ends at a river or the sea. Extra caution is needed since it can be hard to tell the water from the road at night or in bad weather.

Approach to an Uneven Bridge
Indicates an uneven bridge ahead, caused by a difference in level between the road surface and the bridge deck.
Reduce speed and follow other posted signs.

Uneven Road Surface
This warning sign indicates surface irregularities ahead, such as bumps, humps, or potholes.
Reduce speed, and do not brake suddenly or hard. Sudden braking can damage the cargo, passengers, or vehicle.

Slippery Road
Indicates this section of road has become slippery due to rain, snow, or similar causes. Reduce speed, avoid sudden or hard braking, and avoid sudden steering movements.

Loose Surface Material
There’s loose material on the road surface, and it could be thrown up by traffic. When you see this sign, reduce speed and increase the following distance to other vehicles. Do not brake suddenly or hard.

School Crossing Sign
Meaning: You’re approaching a school crossing. Reduce speed. Do not overtake the vehicle ahead. If there are students or pedestrians crossing or about to cross, stop; students and pedestrians have priority.

Falling Rocks
Rocks falling from a mountainside inside a red triangle. Warns that material may have fallen or spilled onto the road. Reduce speed and increase following distance. Do not stop or park.

Pedestrian Crossing Sign
Warns drivers they’re approaching a pedestrian crossing. Reduce speed. Do not overtake the vehicle ahead. This sign means that if there are pedestrians crossing or about to cross, drivers must stop. Pedestrians have priority.

Cyclists Crossing Sign
Meaning: warns that cyclists may cross the road ahead, perpendicular to the road. Reduce speed and watch out for cyclists when passing through.

Road Works Ahead Sign
Warns of approaching road works. Reduce speed. Follow any instructions from traffic personnel and any restrictions indicated by other traffic signs.

Low-Flying Aircraft (Airport) Sign
Indicates that aircraft fly low over this stretch of road near an airport during takeoff and landing. Be prepared for sudden, loud noise.

Domestic Animals Crossing
Meaning: warns that domestic animals may cross the road. When you see this sign, reduce speed and drive accordingly.

Traffic Light Ahead Sign
Red, yellow, and green circles inside a red triangle. Warns of an approaching intersection controlled by traffic lights. Proceed according to the conditions at the intersection.

Crosswind Traffic Sign
Warns of strong crosswinds affecting the lane. Reduce speed, do not overtake other vehicles. Keep firm control of the steering wheel and steer against the wind.

Two-Way Traffic Sign
Forward and backward arrows inside a red triangle frame. Generally warns of a transition from a divided or one-way road to a two-way, two-lane section of road. Indicates that a normally one-way road has been temporarily opened to two-way traffic.

Caution Sign
An exclamation mark inside a red triangle. Warns of other hazards not covered by the standard warning signs. What the hazard is will be specified by a supplementary sign (such as low shoulder, etc.). Drive with care for the specified hazard.

Uncontrolled Intersection Sign
An X mark inside a red triangle frame. Warns of an approaching intersection not controlled by traffic police, traffic lights, or traffic signs. Reduce speed. Proceed with caution for vehicles on the minor roads.

Major Road / Minor Road Intersection Sign
Meaning: this sign warns of an approaching intersection where a minor road meets the major road ahead. When you see this sign, reduce speed. Proceed with caution for vehicles on the minor road.

Minor Road Merging from the Right
Meaning: warns of a minor road ahead merging into the major road from the right. Proceed with caution for vehicles on the minor road. Vehicles on the major road have priority.

Entering the Major Road from the Right
Meaning: on divided roads and at bridge intersections, warns that vehicles are joining the one-way flowing traffic from the right via a connecting road. Pass with caution for vehicles on the connecting road.

Entering the Major Road from the Left
Meaning: on divided roads and at bridge intersections, warns that vehicles are joining the one-way flowing traffic from the left via a connecting road. Pass with caution for vehicles on the connecting road.

Controlled Railway Crossing Sign
A symbol resembling a garden fence inside a triangle. This traffic sign indicates a barrier-controlled level (railway) crossing ahead. Reduce speed. Stop if the barrier is down; if it’s up, cross carefully.

Approach to a Roundabout
Rotating arrows inside a red triangle. Meaning: warns of an approaching roundabout ahead. Reduce speed as you approach. Vehicles already in the roundabout have priority.

Minor Road Merging from the Left
Meaning: warns of a minor road ahead merging into the major road from the left. Proceed with caution for vehicles on the minor road. Vehicles on the major road have priority.

Uncontrolled Railway Crossing Sign
A train symbol inside a red triangle. There’s an uncontrolled railway crossing ahead. Stop at an appropriate distance when reaching the crossing. Cross carefully only after making sure no train is coming.

Approach to a Tunnel Sign
Warns of an approaching tunnel ahead. Reduce speed and follow any restrictions posted by other signs.

Uncontrolled Railway Crossing (Single Track)
Warns of a railway crossing with a single track ahead. When you see this sign, stop; if a train is crossing, give it priority before proceeding.

Uncontrolled Railway Crossing (At Least Two Tracks)
Warns of a railway crossing with at least two tracks ahead. When you see this sign, stop; if a train is crossing, give it priority before proceeding.

Intersection or Crossing Approach Signs
Indicates an intersection or railway crossing at the distance shown on the sign. Reduce speed and follow other restrictions. Meaning of the red diagonal lines: each line represents 100 meters.

Bridge Approach Markers
Indicates you’re arriving at a bridge. Mounted on the left and right railings of the bridge, they give an idea of the bridge’s width and make the railings visible.

Dangerous Bend Direction Markers
Indicates you’ve entered a bend with limited visibility, previously warned about by a hazard sign, and shows the direction the bend turns.

Median-Head Supplementary Marker
A yellow-and-black traffic sign. Placed at the head of a median on divided roads. Reinforces the meaning and visibility of the mandatory direction sign.
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