IN15
At a glance
- Sign code
- IN15
- Type
- Guidance
- Official meaning
- Indicates that the traffic signal ahead is a multi-phase signal, operating in the number of phases shown.
What the Multi-phase traffic signals sign means
The traffic signal ahead works in several separate phases (here, three) rather than a simple stop-go cycle.
What you must do
Approach ready to obey the signal for your lane or movement, and be patient - your green may come in a later phase of the cycle.
Know the mistake this sign turns on
Full access adds the confusion Multi-phase traffic signals 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 IN15 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.