Prohibition sign · R204
Height restriction sign (R204)
Vehicles higher than the displayed limit may not proceed.
What does the height restriction sign mean?
Vehicles higher than the displayed limit may not proceed.
What should you do?
Check the height of the whole vehicle and load.
| Sign code | R204 |
|---|---|
| Sign group | Prohibition signs |
| Applies to | All learner codes (1, 2 and 3) |
| Test section | Road signs and markings |
How to recognise the height restriction sign
A red-bordered disc showing a height in metres with arrows above and below it.
Where you will see it
On any public road with a low structure such as a bridge.
What to do when you see it, step by step
- If your vehicle or its load is taller than the height shown, use a different road.
- Measure from the ground to the highest point, including the load.
The common mistake
The matching warning (W320) tells you the structure is ahead; this sign is the actual restriction.
About prohibition signs
Prohibition signs show what you may not do, such as overtaking, parking or turning. They are red-ringed circles. The K53 learner's test asks you to recognise signs like the height restriction sign (R204) 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: prohibition signs for this one.
- Recall what the sign asks of you: check the height of the whole vehicle and load.
- 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 Prohibition signs and restricted movements.
Signs it is often confused with
Learners mix up signs that look or sound similar. Compare the height restriction sign with these:
Gross mass restriction (R202)A red-bordered disc showing a mass figure in tonnes.
Axle mass restriction (R203)A red-bordered disc showing a figure for the mass on a single axle.
Length restriction (R205)A red-bordered disc showing a length in metres between arrows.Test yourself: Height restriction sign questions
1 What does this sign mean?
- Vehicles higher than the displayed limit may not proceed.
- You must come to a complete stop.
- Your road ends at an angled T-junction ahead.
Show the answer
Answer A: Vehicles higher than the displayed limit may not proceed.
Check the height of the whole vehicle and load.
Memory tip: R204 · Height restriction
All vehicle codes
2 Which response fits this sign?
- Prepare to turn as shown by the junction layout.
- Check the height of the whole vehicle and load.
- Stop behind the stop line. Look for traffic and pedestrians, then continue when safe.
Show the answer
Answer B: Check the height of the whole vehicle and load.
Height restriction: Vehicles higher than the displayed limit may not proceed.
Memory tip: Check the height of the whole vehicle and load.
All vehicle codes
Height restriction sign: quick questions
What does the height restriction sign (R204) mean?
Vehicles higher than the displayed limit may not proceed.
What should you do at the height restriction sign?
If your vehicle or its load is taller than the height shown, use a different road. Measure from the ground to the highest point, including the load.
Where will you see the height restriction sign?
On any public road with a low structure such as a bridge.
What is the common mistake with the height restriction sign?
The matching warning (W320) tells you the structure is ahead; this sign is the actual restriction.
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.