Warning sign · W319
Tunnel ahead sign (W319)
A tunnel lies ahead.
What does the tunnel ahead sign mean?
A tunnel lies ahead.
What should you do?
Prepare for changing light and visibility; observe any tunnel controls.
| Sign code | W319 |
|---|---|
| Sign group | Warning signs |
| Applies to | All learner codes (1, 2 and 3) |
| Test section | Road signs and markings |
How to recognise the tunnel ahead sign
A triangle showing a tunnel entrance.
Where you will see it
On any road, especially in mountain areas.
What to do when you see it, step by step
- Slow down and switch on your dipped headlights.
- Study references also advise against overtaking in or near tunnels.
The common mistake
Your eyes need time to adjust to the dark inside a tunnel.
Why this sign matters
Moving from daylight into a tunnel makes it hard to see for a moment. The sign gives you time to slow and put on your headlights first.
About warning signs
Warning signs tell you about a hazard ahead so you can slow down and prepare. They are red-bordered triangles. The K53 learner's test asks you to recognise signs like the tunnel ahead sign (W319) and choose the correct response, so learn both the picture and the action.
How to answer a test question about this sign
- Look at the shape and colour first. They tell you the group: warning signs for this one.
- Recall what the sign asks of you: prepare for changing light and visibility; observe any tunnel controls.
- Remove the options that describe a different group of sign, then choose the response that matches the action.
Want the full explanation? Read the chapter Warning signs and temporary road controls.
Signs it is often confused with
Learners mix up signs that look or sound similar. Compare the tunnel ahead sign with these:
Crossroad ahead (W101)A triangle with a plain cross showing a road crossing yours.
T-junction ahead (W104)A triangle showing your road ending against a road that runs across it.
Skewed T-junction (W105)A triangle showing a T-junction whose cross-road meets yours at an angle (one of a left/right pair).Test yourself: Tunnel ahead sign questions
1 What does this sign mean?
- A tunnel lies ahead.
- The road narrows from the right ahead.
- Vehicles exceeding the displayed gross mass may not proceed.
Show the answer
Answer A: A tunnel lies ahead.
Prepare for changing light and visibility; observe any tunnel controls.
Memory tip: W319 · Tunnel ahead
All vehicle codes
2 Which response fits this sign?
- Prepare for changing light and visibility; observe any tunnel controls.
- Check traffic and prepare for less road space.
- Check the permitted mass shown and the applicable mass of your vehicle.
Show the answer
Answer A: Prepare for changing light and visibility; observe any tunnel controls.
Tunnel ahead: A tunnel lies ahead.
Memory tip: Prepare for changing light and visibility; observe any tunnel controls.
All vehicle codes
Tunnel ahead sign: quick questions
What does the tunnel ahead sign (W319) mean?
A tunnel lies ahead.
What should you do at the tunnel ahead sign?
Slow down and switch on your dipped headlights. Study references also advise against overtaking in or near tunnels.
Where will you see the tunnel ahead sign?
On any road, especially in mountain areas.
What is the common mistake with the tunnel ahead sign?
Your eyes need time to adjust to the dark inside a tunnel.
Sign artwork: Southern African Development Community (SADC), public domain. AceK53 is an independent study aid. Always confirm test requirements with your driving licence testing centre.