The answer options
- Stop, select a low gear and apply the parking brake.
- Ensure sufficient room is left for the vehicle behind
- Position your vehicle to the left hand side
- Ensure the central reservation is wide enough for your vehicleCorrect
Why the other options are wrong
- “Stop, select a low gear and apply the parking brake.” is a distractor. It does not meet the standard the question is testing, which ensure the central reservation is wide enough for your vehicle does. Picking it in the real test costs a mark you cannot get back, and with a pass mark of 43 out of 50 you only have seven to spare.
- “Ensure sufficient room is left for the vehicle behind” is a distractor. It does not meet the standard the question is testing, which ensure the central reservation is wide enough for your vehicle does. Picking it in the real test costs a mark you cannot get back, and with a pass mark of 43 out of 50 you only have seven to spare.
- “Position your vehicle to the left hand side” is a distractor. It does not meet the standard the question is testing, which ensure the central reservation is wide enough for your vehicle does. Picking it in the real test costs a mark you cannot get back, and with a pass mark of 43 out of 50 you only have seven to spare.
Why that is the answer
The Highway Code advises that before turning right onto a dual carriageway, you must check whether the central reservation is wide enough for your vehicle. If it is, you can wait there for a safe gap in the oncoming traffic. If the gap is too narrow, your vehicle will overhang and block traffic, so you must wait until traffic in both directions is clear before moving out.
What alertness covers
- · Mirror–signal–manoeuvre and when each mirror is checked
- · Blind spots and life-saver shoulder checks
- · Correct signalling, including when not to signal
- · Tiredness, breaks on long journeys and the 15-minute rest rule
Mistakes learners repeat on this topic
- · Signalling so early that other drivers act on the wrong junction
- · Checking mirrors after starting a manoeuvre rather than before
- · Opening a window as a cure for tiredness instead of stopping
- · Answering a hands-free call and assuming it is a safe alternative
Instructor tip: If a question offers 'stop somewhere safe and rest' for a tiredness scenario, that is almost always the marked answer.
How this comes up in the real test
Questions from alertness appear throughout the 50-question multiple-choice section, and the wording changes between versions. Learn the rule rather than the sentence: the DVSA can ask the same point from the opposite direction, and a memorised answer falls over the moment the phrasing moves.
The pass mark is 43 out of 50, so seven wrong answers is your entire margin. If a whole category is shaky, run the topic practice below until you are getting every question right for the right reason, then go back to full mocks under the clock.
More alertness questions
- Before making a U-turn, what should you do?
- Before slowing or stopping your vehicle, what is something you must do?
- How can you make sure that a satellite navigation (satnav) system doesn’t distract you when you’re driving?
- How should you pass the cyclists?
- Something is hanging from your rearview mirror. Why might this pose a risk?
- The windscreen pillar is restricting your view when waiting to emerge from a junction. What should you be especially cautious of?