The side road ahead on the right sign shows a main vertical road outline with a side branch pointing right inside a red triangle.
It prepares main-road drivers for vehicles turning right across traffic or emerging from the right-hand junction.
What this sign means
This sign warns drivers that a side road joins the main carriageway from the right side.
- Red warning triangle frame
- Thick vertical bar with right branch
- Warns of vehicles crossing oncoming lanes or emerging from the right
What to do when you see it
Check your mirrors, maintain focus on the junction area, and watch for traffic turning right across your lane.
- Keep a safe distance behind traffic turning right
- Scan the side junction for emerging drivers
- Maintain a steady, controlled speed
How this sign is tested
Theory questions focus on potential hazards caused by traffic waiting in the middle of the road to turn right into side roads.
Common mistakes
Attempting to overtake a vehicle ahead that is slowing down to make a right turn.
Test yourself on this one
Road and traffic signs is the biggest category in the question bank with 102 questions, and signs turn up inside other categories too. Work through them free, no sign-up needed.
Practise road sign questionsFrequently asked questions
Who yields at a side road on the right?
Traffic on the side road must yield to all traffic on the major main road.
What hazard is unique to right-side junctions?
Vehicles turning right must cross oncoming traffic lanes, increasing collision risk.
Can I pass a right-turning vehicle on the left?
Yes, if there is sufficient room on the left and it is safe to do so.