BTT Lane Discipline 1 — Questions and Answers
Question 1: On a three-lane road in Singapore, what is the right-most lane primarily used for?
- Normal driving
- Overtaking only (Correct answer)
- Heavy vehicles only
- Emergency vehicles only
Correct answer: Overtaking only
The right-most lane is the overtaking lane. Drivers should use it to pass slower vehicles and return to the left lane once overtaking is complete.
Question 2: What is 'lane straddling'?
- Driving with wheels on two lanes simultaneously (Correct answer)
- Changing lanes without signalling
- Driving in the centre lane permanently
- Using the emergency lane
Correct answer: Driving with wheels on two lanes simultaneously
Lane straddling is when a vehicle drives with its wheels on or across the lane markings, occupying parts of two lanes simultaneously. This is dangerous and illegal.
Question 3: Before changing lanes, what is the correct sequence of actions?
- Signal, mirror, move
- Mirror, signal, mirror (blind spot), move (Correct answer)
- Move, then signal
- Check blind spot only, then move
Correct answer: Mirror, signal, mirror (blind spot), move
The correct sequence is: check mirrors, signal your intention, check mirrors again including blind spots, then move when safe.
Question 4: When driving on a two-lane road, which lane should you normally occupy?
- The right lane
- The left lane (Correct answer)
- Either lane
- The lane with less traffic
Correct answer: The left lane
In Singapore, the left lane is the normal driving lane. The right lane should be used primarily for overtaking.
Question 5: What does a solid white line between lanes mean?
- Lane change is permitted
- Lane change is discouraged — stay in your lane (Correct answer)
- Road edge
- Bus lane boundary
Correct answer: Lane change is discouraged — stay in your lane
A solid white line between lanes discourages lane changing. While not absolutely prohibited, you should remain in your lane unless necessary.
Question 6: You need to exit the expressway but you are in the right lane. What should you do?
- Cut across all lanes to reach the exit
- Signal and gradually move to the left lane well before the exit (Correct answer)
- Stop and wait for a gap to cross
- Use the emergency lane to reach the exit
Correct answer: Signal and gradually move to the left lane well before the exit
Plan ahead and move to the left lane well before your exit. Cutting across multiple lanes at the last moment is extremely dangerous.
BTT Lane Discipline 1
On a three-lane road in Singapore, what is the right-most lane primarily used for?