(plural single yellow lines)
- (UK) A single yellow line painted at the side of a road to show that parking is permitted only at specified times.
- 1989 Melvin Dixon, "Trouble the water"
- 1999 Ruth Rendell, "A site for sore eyes"
- He knew it would be risky parking on a double yellow line, or even a single yellow line, at this hour, but in a side street off the back of Kensington Church Street he found areas demarcated on the roadway with white lines.
- 2006 Peter James, "Looking good dead"
- 2007 Barrie Segal, "The Parking Ticket Awards: Crazy Councils, Meter Madness and Traffic Warden Hell"
- The postman in question was parked on a single yellow line with parking-time restrictions.