A single yellow line painted along the edge of the carriageway means waiting is prohibited during specified hours. The hours themselves are never on the line, they are shown on a small upright plate at the kerb.
Outside the signed hours you may park normally unless another restriction applies.
What this sign means
Waiting is banned during the times on the plate. Loading and unloading is usually still allowed unless kerb blips say otherwise.
If no plate is visible, look further along the street. Plates are placed at intervals along a controlled length.
What to do when you see it
Check the plate before you leave the vehicle.
- Read the days and times shown on the nearest plate.
- Do not wait during the restricted hours, even with someone in the car.
- Look for yellow kerb blips, which restrict loading as well.
- Never park on a yellow line where it would obstruct a junction or crossing.
How this sign is tested
Questions test whether you know the times are on a plate rather than implied by the line, and that a single line is time limited rather than permanent.
There are also questions about the difference between waiting and loading restrictions.
Common mistakes
Assuming a single yellow line always means no parking at any time.
Sitting in the car with the engine running during restricted hours, which still counts as waiting.
Test yourself on this one
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Practise road sign questionsFrequently asked questions
Can I park on a single yellow line in the evening?
Only if the times on the plate have ended. Always check the plate.
Does waiting include staying in the vehicle?
Yes. Waiting means the vehicle is stationary, whether or not the driver is present.
Can I load on a single yellow line?
Usually yes, unless yellow kerb marks show a loading ban.