Rules of the road · about 3 min read
Intersections, traffic circles and right of way
Understand where vehicle paths meet
What you will learn
- Identify the control on your approach.
- Apply all-way-stop arrival order.
- Distinguish a roundabout from a mini-circle control.
What an intersection is
An intersection is the place where two or more public roads join or cross. Your path may meet vehicles from the sides, opposing vehicles turning across you, and pedestrians crossing the road. The surfaced conflict area is often called the junction.
As you approach, identify the layout and the control applying to you: stop, yield, traffic lights or an officer’s direction. A warning sign announcing a T-junction or crossroad prepares you for the layout; it does not by itself authorise entry.
Check the exit as well as the entry. There must be room to clear the junction without obstructing other traffic. A turn signal communicates your plan, but it does not give you priority.
Key idea: Know the layout, the controlling instruction and the space available beyond it.
A known order at an all-way stop
At a three-way or four-way stop, bring the vehicle to a complete standstill behind the line. Watch the other approaches so you know which vehicles stopped first. They normally proceed first.
In the illustrated example, A stopped before B, and B before C. A checks and moves first; B checks and then moves; C follows only after another observation. This order depends on the stated arrival times, not on the colour or size of the vehicles.
If another driver enters out of order, avoid the conflict. Do not accelerate simply because it was “your turn”. Where order is unclear, remain stopped and proceed only when safe.
Key idea: Every vehicle stops, then uses the observed arrival order and a fresh safety check.
A yield-controlled roundabout
A roundabout routes traffic around a central island. In South Africa movement is clockwise. The blue roundabout command sign indicates that circulation direction; entry signs and markings tell you how to give way.
At an ordinary yield-controlled roundabout, look right and yield to circulating traffic approaching from your right when it is close enough to create a hazard. Slow down before the yield line and stop when needed. Do not enter because the vehicle ahead of you found a gap: check your own opportunity.
Choose and follow the lane appropriate to your route and the markings. Watch pedestrians and cyclists at entries and exits. A change of lane inside the circle still needs observation and a safe gap.
Key idea: Circulate clockwise and obey the entry control; circulating traffic may have priority.
Mini-circle control and T-junctions
The specific “Yield at traffic circle” control, R2.2, is commonly used at mini circles. The reference manual says to yield to traffic already in the circle and to a driver who reaches or crosses their yield line before you reach yours. This is not a reason to apply a blanket “always go if nobody is on your right” shortcut to every small circle.
At a T-junction, your road ends at a through-road. If your approach has a stop or yield control, give way as instructed and turn only when the chosen route is clear. Check both directions, including the lane you intend to join.
Across all layouts, an officer or a different signed control can change the required procedure. Read the controls at the actual junction rather than relying only on its shape.
Key idea: Different circles and junction controls can require different priority decisions.
Waiting at a roundabout entry
A vehicle is circulating towards your entry from the right. Your approach has a yield line.
- Reduce speed and remain before the yield line.
- Judge whether entry would force the circulating vehicle to brake or change course; if so, wait.
- Check for pedestrians and any following circulating traffic.
- Enter clockwise only when there is a safe gap.
Quick recap
- A warning of a junction is not permission to enter.
- At all-way stops, vehicles normally follow their stopping order.
- Roundabout movement is clockwise.
- Read the specific entry control, especially at mini circles.
Practice questions on intersections, traffic circles and right of way
1 A traffic officer tells you to stop, but the light is green. What do you do?
- Sound the horn and continue
- Stop as directed by the officer
- Continue because the light is green
Show the answer
Answer B: Stop as directed by the officer
An authorised traffic officer’s directions take priority over traffic lights and signs.
Memory tip: An authorised traffic officer’s directions take priority over traffic lights and signs.
All vehicle codes
2 Your light turns green but vehicles block the exit. What should you do?
- Drive around the vehicles on the pavement
- Wait until there is room to clear the junction
- Enter and stop in the middle
Show the answer
Answer B: Wait until there is room to clear the junction
A green light does not make it safe to block an intersection. Wait until you can clear it.
Memory tip: A green light does not make it safe to block an intersection. Wait until you can clear it.
All vehicle codes
Part of the guide: Four-way stops and right of way, Traffic circles
More rules of the road chapters
- Speed, following distance and stopping
- Keeping left, lane changes and overtaking
- Vehicle safety before and during a journey
- Parking, towing and everyday responsibilities
- Overtaking and passing safely
- Parking places and required clearances
Sources: NaTIS Road Traffic Signs, PDF pp. 5–6, 11, 24–26; NaTIS Rules of the Road, PDF pp. 34–35.
AceK53 is an independent study aid based on public road traffic manuals and is not an official test. Always confirm requirements with your driving licence testing centre.