Level 3: Advanced Observation
Roundabout Lanes Guide
Mastering lane discipline and the 12 o'clock rule for any UK roundabout.
The 12 O'Clock Rule
When approaching a roundabout, look at the sign and imagine a clock face over it:
- ⬅️ Left Turn (1st Exit): Before 12 o'clock - Left Lane.
- ⬆️ Straight Ahead: At 12 o'clock - Left Lane (unless marked otherwise).
- ➡️ Right Turn: Past 12 o'clock - Right Lane.
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Roundabout Lane Diagram
Download the visual lane guide PDF.
2-Lane Roundabouts
Left Lane Usage:
Used for turning left or going straight ahead (12 o'clock). Check for signs or road markings that may change this.
Right Lane Usage:
Used for turning right or doing a full U-turn (past 12 o'clock).
3-Lane / Multi-Lane
On larger roundabouts, the Middle Lane is often dedicated to the "Straight Ahead" exit to keep traffic flowing.
Look for "Spiral" markings—these will naturally push you toward your exit lane without you having to cross lines.
The MSM Routine: At Roundabouts
- 🔍 Mirrors: Check early to judge the speed of traffic behind you.
- 💡 Signal: Indicate Left for 1st exit, Right for any exit past 12 o'clock. (No signal for straight ahead until you pass the exit before yours).
- 🚗 Manoeuvre: Position your car early in the correct lane based on the sign.