Warning signs

What do warning signs look like?

Warning signs are triangular with a white background, red border and black symbols. There are exceptions to this rule of thumb. They alert you to particular dangers — places on the road where you need to be extra attentive and drive at a low enough speed to handle the hazard.

Warns of traffic lights

The sign warns that traffic lights are ahead. The lights may appear very abruptly, or be in a place where there are not normally traffic lights. The sign is often used in connection with roadworks where only one usable lane remains.

Warns of traffic lights

Is the traffic signal warning sign important for the theory test and the practical driving test?

Yes, the traffic signal warning sign is important both on the theory test and during the practical driving test. On the theory test you may be asked what the sign means and when it is used. If you encounter the sign on the practical driving test you must show that you recognize it and adjust your speed so you can stop safely if the light changes.

What does the traffic signal warning sign mean?

The traffic signal warning sign warns that you are about to reach a place with traffic lights. This can be at an intersection, at a signal-controlled pedestrian crossing, or at a road narrowing with light control. The sign is used when the traffic light can be hard to see in time, for example due to curves, hills, sun glare, or high speed.

When do you encounter the traffic signal warning sign?

You can encounter the sign in places such as:

Outside built-up areas – where traffic lights can appear unexpectedly.
Where visibility is poor – for example behind a curve or hilltop.
At ramp metering – on motorway on-ramps with lights that release cars in batches.
At temporary signal control – for example at roadworks with a narrowing.

In the picture you see a traffic signal warning sign placed along a country road. It is there to warn drivers that a traffic light is coming up that can be hard to see due to a curve. The sign gives you time to slow down and be ready to stop.

Picture of a traffic signal warning sign along a country road

What happens if you ignore the traffic signal warning sign?

If you ignore the sign, you may arrive at a red light too fast and not be able to stop in time. This can lead to dangerous situations, especially if there are pedestrians in the crossing or crossing traffic. You can also get a fine and demerit points on your driver's license for running a red light.

Why is this sign important?

The traffic signal warning sign gives you time to react and adjust your speed before you meet a traffic light. It helps prevent sudden braking, rear-end collisions, and dangerous intersection situations. Respecting the sign is an important part of safe and predictable driving.

Frequently asked questions (FAQ) about the traffic signal warning sign

Does the sign always apply? – Yes, the sign always applies when it is in place, regardless of time of day.
Can the sign be placed at temporary lights? – Yes, it can be placed at temporary signal controls, for example at roadworks.
How far before the traffic light is the sign placed? – The distance varies with the speed limit. For example it can be placed 50–150 meters before at 50–60 km/h, and up to 300 meters before at higher speeds.