When taking the first exit (turning left) at a roundabout in Brunei, a driver must:

1. Approach in the left-hand lane, signal left on approach, keep to the left inside the roundabout, and indicate left until exiting
2. Approach in the right lane and swerve left across all lanes without indicating
3. Stop completely inside the roundabout to check for left-turning traffic
4. Signal right on approach and signal left only after exiting