BTT Lane Discipline 3 — Questions and Answers
Question 1: What is the correct lane position when driving straight through a roundabout?
- Right lane throughout
- Left lane throughout
- Left lane to enter, signal left before your exit (Correct answer)
- Right lane to enter, move left to exit
Correct answer: Left lane to enter, signal left before your exit
For going straight through a roundabout, use the left lane to enter and signal left as you approach your exit to leave the roundabout.
Question 2: When turning left at a roundabout, which lane should you use?
- The right lane
- The left lane — signal left on approach (Correct answer)
- Either lane
- The centre lane
Correct answer: The left lane — signal left on approach
For a left turn (first exit) at a roundabout, approach in the left lane and signal left as you enter the roundabout.
Question 3: When turning right at a roundabout, which lane should you enter?
- Left lane
- Right lane — signal right, then signal left before exiting (Correct answer)
- Any available lane
- The emergency lane
Correct answer: Right lane — signal right, then signal left before exiting
For a right turn, enter the roundabout in the right lane signalling right. Switch to signalling left as you pass the exit before yours, then exit.
Question 4: What does a 'Keep Left' sign with a white arrow on a blue circular background mean?
- The left lane is reserved
- All vehicles must keep to the left of the sign or obstacle (Correct answer)
- Left turn only
- Merge left
Correct answer: All vehicles must keep to the left of the sign or obstacle
A 'Keep Left' sign instructs you to pass to the left of the sign or traffic island. It is a mandatory directional instruction.
Question 5: Two lanes are merging into one. Who has right of way?
- The vehicle in the left lane
- Vehicles should take turns (zipper merge) when safe (Correct answer)
- The faster vehicle
- The vehicle that signals first
Correct answer: Vehicles should take turns (zipper merge) when safe
When two lanes merge, drivers should cooperate using a zipper merge — alternating one vehicle at a time when safe to do so.
Question 6: You are driving in the centre lane of a three-lane road. The vehicle behind is flashing its headlights. What should you do?
- Slow down
- Speed up
- Move to the left lane if safe to do so (Correct answer)
- Ignore them — you are entitled to the centre lane
Correct answer: Move to the left lane if safe to do so
If you are not overtaking and a faster vehicle wants to pass, move to the left lane when safe. The centre lane should not be occupied unnecessarily.
BTT Lane Discipline 3
What is the correct lane position when driving straight through a roundabout?