The answer options
- To avoid the wind
- To be able to corner quicker
- To allow the large vehicle to stop easier
- To allow the driver to see you in their mirrorsCorrect
Why the other options are wrong
- “To avoid the wind” is a distractor. It does not meet the standard the question is testing, which to allow the driver to see you in their mirrors 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.
- “To be able to corner quicker” is a distractor. It does not meet the standard the question is testing, which to allow the driver to see you in their mirrors 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.
- “To allow the large vehicle to stop easier” is a distractor. It does not meet the standard the question is testing, which to allow the driver to see you in their mirrors 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
Large vehicles have significant blind spots, especially directly behind them. Staying a good distance back ensures you remain visible in the driver's side mirrors. It also dramatically improves your own view of the road ahead, giving you more time to react to hazards. Dropping back does not help the large vehicle stop or let you corner faster, but it keeps you safe.
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?