Warning sign · W330
Road narrows on left sign (W330)
The road narrows from the left ahead.
What does the road narrows on left sign mean?
The road narrows from the left ahead.
What should you do?
Check traffic and adjust position safely as the road narrows.
| Sign code | W330 |
|---|---|
| Sign group | Warning signs |
| Applies to | All learner codes (1, 2 and 3) |
| Test section | Road signs and markings |
How to recognise the road narrows on left sign
A triangle showing the road narrowing from the left.
Where you will see it
On any road before the left-hand edge closes in.
What to do when you see it, step by step
- Slow down and adjust your lane position as the space on your left reduces.
The common mistake
Do not drift into the opposite lane; reduce speed and keep a straight line.
Why this sign matters
When the left edge closes in, your lane position has to change. The sign tells you to adjust gently instead of finding the narrowing at speed.
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 road narrows on left sign (W330) 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: check traffic and adjust position safely as the road narrows.
- 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 road narrows on left sign with these:
Road narrows (W328)A triangle showing the road narrowing symmetrically from both sides.
Road narrows on right (W329)A triangle showing the road narrowing from the right.
Side road ahead (W107)A triangle showing your road continuing straight with a side road joining from the left.Test yourself: Road narrows on left sign questions
1 What does this sign mean?
- Your road ends at an angled T-junction ahead.
- You may not exceed 40 km/h.
- The road narrows from the left ahead.
Show the answer
Answer C: The road narrows from the left ahead.
Check traffic and adjust position safely as the road narrows.
Memory tip: W330 · Road narrows on left
All vehicle codes
2 Which response fits this sign?
- Slow down and look carefully in both directions before turning.
- Stay at or below 40 km/h and drive more slowly if conditions require it.
- Check traffic and adjust position safely as the road narrows.
Show the answer
Answer C: Check traffic and adjust position safely as the road narrows.
Road narrows on left: The road narrows from the left ahead.
Memory tip: Check traffic and adjust position safely as the road narrows.
All vehicle codes
Road narrows on left sign: quick questions
What does the road narrows on left sign (W330) mean?
The road narrows from the left ahead.
What should you do at the road narrows on left sign?
Slow down and adjust your lane position as the space on your left reduces.
Where will you see the road narrows on left sign?
On any road before the left-hand edge closes in.
What is the common mistake with the road narrows on left sign?
Do not drift into the opposite lane; reduce speed and keep a straight line.
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.