Road marking
Single yellow line
What does a single yellow line mean?
No waiting during the times shown on nearby signs. Outside those times you may wait or park there.
What it means
Waiting is restricted during the days and times shown on a nearby yellow plate or zone entry sign.
A single yellow line is only part-time. The plate nearby, or the sign at the entry to a controlled parking zone, tells you when the restriction applies.
If the plate does not show any days, the restriction applies every day, including Sundays and bank holidays.
Tip: One line, check the time: a single yellow line always has times somewhere nearby.
Where you'll see it
On busy streets and in town centres, often next to parking bays or in controlled parking zones.
Rules to know
You must not wait or park on yellow lines during the times of operation shown on nearby time plates, or on zone entry signs in a controlled parking zone.
The Highway Code, Rule 238
If no days are shown on the signs, the restrictions are in force every day including Sundays and bank holidays.
The Highway Code, Road markings
Where the yellow plate does not show the days of the week, the restrictions apply at the same times every day, including Sunday.
Know Your Traffic Signs, p. 44
Common mistakes
Mistake: Parking on a single yellow line because there is no plate right next to your car.
Instead: The plate may be further along the street, or on the zone entry sign. Check before you leave the car.
Mistake: Assuming the restriction does not apply on Sundays.
Instead: If no days are shown, it applies every day, including Sundays and bank holidays.
Test yourself
Recalling the answer helps it stick. Pick an answer to see how you did.
Question 1 of 2
What does this marking mean?
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Related markings and signs
Often confused with
Double yellow lines
Road marking
Two lines: no waiting at any time.
Used with
No waiting
Road sign
The plate showing when waiting is not allowed.
More road markings
All road markingsSources
- The Highway Code, Road markings
- The Highway Code, Rule 238
- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), On-street parking control, p. 44
The diagram is our own illustration of the marking, not to scale. Official drawings are in Know Your Traffic Signs and the Highway Code.
Last reviewed 6 October 2026. This page explains the marking in our own words; for the full rules, see The Highway Code. How we source and check content