R139
At a glance
- Sign code
- R139
- Type
- Regulatory
- Official meaning
- Indicates a lane or carriageway that may only be used by buses and trams; other classes of vehicle are not permitted to use it.
What the Buses and trams only sign means
This blue command sign means the lane or roadway ahead is reserved for buses and trams only.
What you must do
If you are not driving a bus or a tram, do not enter or use this lane or roadway; stay in the general-traffic lanes.
Know the mistake this sign turns on
Full access adds the confusion Buses and trams only is most often mistaken for and the hint for the test, on this sign and every other one — plus practice questions and timed mock papers. The practice sample and the readiness test are free.
See the free practice testSources
- Road Traffic Signs chart, National Department of TransportThe official chart. Sign R139 was checked against it, artwork and meaning, before being published here.
- National Road Traffic Regulations, 2000 — Schedule 1Where the prescribed meaning of each road traffic sign is set out.
Last updated 2026-08-23.