Driving Theory Test

Alertness

18 free practice questions with explanations

PassNova has 18 free Driving Theory Test practice questions on Alertness, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.

Sample questions

Alertness: example questions & answers

18 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.

  1. What should you do if you feel yourself becoming drowsy while driving on a motorway?

    • ALeave the motorway at the next exit and find a safe place to rest
    • BSpeed up to stay alert
    • COpen the windows for fresh air and continue
    • DTurn up the radio to 100% volume

    Answer: Leaving the motorway and resting is the safest action when drowsy. Opening windows or turning up the radio provides only temporary relief and does not address the underlying fatigue that impairs your reactions and decision-making.

  2. When driving at night, why is it particularly important to reduce your speed?

    • ATo save fuel
    • BTo avoid disturbing other road users
    • CBecause the car is harder to control
    • DBecause your headlights only illuminate so far ahead, limiting how much time you have to react

    Answer: Reduced visibility at night means you cannot see hazards as far ahead, so you need more time to stop. Your stopping distance increases proportionally as your braking distance (the actual stopping distance minus perception time) becomes crucial in low visibility conditions.

  3. You're driving in heavy rain at 60mph. What should you do to maintain safe alertness?

    • AReduce speed and increase your following distance
    • BIncrease speed to get through it faster
    • CFocus only on the road directly ahead
    • DTurn on your fog lights and full beam

    Answer: Reducing speed and increasing following distance is correct because rain reduces traction and visibility, requiring more distance to stop safely. Increasing speed worsens control, fog lights can dazzle in rain, and tunnel vision is dangerous.

  4. What is the main reason for using mirrors regularly while driving?

    • ATo look at advertising boards
    • BTo check your appearance
    • CTo adjust your seat
    • DTo maintain awareness of traffic behind and to the sides of your vehicle

    Answer: Regular mirror checks keep you aware of surrounding traffic, which helps you anticipate hazards and make safe lane changes. Mirrors are essential safety tools, not cosmetic features.

  5. You're approaching a bend but cannot see the road ahead. What should you do?

    • ASpeed up so that you are through the bend and past the blind section quickly
    • BMaintain your current speed and assume the road is clear
    • CReduce speed so you can stop if necessary
    • DSound your horn to warn any other vehicles that may be around the bend

    Answer: Reducing speed is essential when you cannot see ahead because you need to be able to stop within the visible area. Maintaining speed or accelerating on a bend you cannot see is dangerous as there could be stopped traffic or obstacles.

  6. What should you do if you miss a turning while driving?

    • AContinue to the next safe place to turn around
    • BReverse back to the turning
    • CStop on the hard shoulder and wait
    • DMake a U-turn immediately

    Answer: Continue to find a safe turning point ahead because reversing on main roads is dangerous and illegal in most situations. Making a sudden U-turn risks colliding with following traffic.

  7. How often should you check your mirrors when driving?

    • AOnce every minute is often enough on a quiet road
    • BOnly when changing lanes
    • COnly before turning
    • DEvery 5-8 seconds

    Answer: Checking mirrors every 5-8 seconds provides continuous awareness of traffic movements around your vehicle. This frequent checking allows you to detect hazards early and make safe decisions.

  8. You notice a car ahead has their brake lights on and off repeatedly. What might this indicate?

    • AThe driver is testing their brakes
    • BThe driver is showing off
    • CThe driver is uncertain or looking for a turning
    • DThe car has a mechanical fault

    Answer: Erratic brake light use often signals the driver is uncertain, searching for a turning, or unfamiliar with the route. This is a hazard warning that the vehicle ahead may slow suddenly or change direction unexpectedly.

  9. What is the effect of consuming alcohol on your alertness while driving?

    • AIt improves concentration
    • BIt has no effect if you only have one drink
    • CIt only affects vision
    • DIt impairs judgment, reaction time, and concentration

    Answer: Alcohol impairs all aspects of driving including judgment, reactions, and concentration, even in small amounts. No amount of alcohol improves driving ability, and even one drink reduces safe driving performance.

  10. When driving on a motorway at night, what should you do if you feel tired?

    • AIncrease your speed to maintain alertness
    • BOpen all windows and turn off the heater
    • CTake the next exit and have a 15-minute nap or stop for refreshment
    • DContinue but use high beam lights

    Answer: Stopping for rest or refreshment is the only safe option when fatigued on a motorway. Physical measures like opening windows provide only temporary relief; the underlying fatigue still impairs your reactions dangerously.

  11. What is the most likely reason for fatigue-related accidents?

    • AThe radio being turned up too loud for the driver to hear other traffic
    • BToo many passengers
    • CBright sunlight
    • DReduced alertness and slower reaction time due to tiredness

    Answer: Fatigue reduces alertness and increases reaction time, leading to poor decision-making and accidents. Drivers should take regular breaks (at least every 2 hours), get adequate sleep, and avoid driving when tired.

  12. How often should you take a break when driving long distances?

    • AEvery hour
    • BEvery 2 hours or 100 miles
    • CAs long as you still feel alert, carry on
    • DOnly when the fuel tank is empty

    Answer: Take a break at least every 2 hours or 100 miles on long journeys. A short 15-minute break can significantly reduce fatigue. Never rely solely on feeling alert, as fatigue can affect judgment.

  13. What does the acronym PUFFIN stand for in relation to road crossings?

    • APedestrian User-Friendly Intelligent Crossing
    • BPublic Utility For Foot Intersection Navigation
    • CPedestrian Using Fast-track Facilities IN junction
    • DPedestrian Universal Foot-Friendly IN crossing

    Answer: A Puffin crossing uses sensors to detect when pedestrians are on the crossing. Unlike Pelican crossings, it has no flashing amber stage as the traffic light reacts directly to pedestrian presence.

  14. What are the signs of driver fatigue?

    • AIncreased speed awareness
    • BDifficulty concentrating, yawning, drifting between lanes, and slowed reactions
    • COnly heavy eyelids
    • DBetter vision at night

    Answer: Signs of fatigue include difficulty concentrating, frequent yawning, drifting between lanes, slower reactions, and difficulty keeping eyes open. If you notice these signs, stop driving immediately and rest.

  15. What can you do to help maintain alertness on a long journey?

    • ADrink more coffee at each service area and keep driving straight through
    • BRegular breaks, keep the car well-ventilated, and vary your speed
    • CDrive faster to finish sooner
    • DTurn the radio up loud and open a window to keep yourself awake at the wheel

    Answer: Maintain alertness by taking regular breaks, keeping your vehicle well-ventilated, varying your speed safely, avoiding heavy meals, and ensuring good sleep the night before. Coffee provides temporary relief but is not a substitute for rest.

  16. How might prescription medicines affect your driving?

    • ASome medicines can cause drowsiness, dizziness, or impaired vision
    • BOnly painkillers affect driving; other prescription medicines are safe
    • CAll medicines improve concentration by treating the underlying condition
    • DThey never affect driving once a doctor has prescribed them for you

    Answer: Some prescription medicines can cause drowsiness, dizziness, blurred vision, or impaired reactions. Always check medicine labels and ask your pharmacist if a medicine could affect driving. Do not drive if unsafe.

  17. When you see a Pelican crossing light showing amber and flashing, what does it mean?

    • AGive way to pedestrians still crossing
    • BStop immediately
    • CThe light is faulty
    • DAccelerate to clear the crossing before the red light shows

    Answer: A flashing amber light at a Pelican crossing means give way to pedestrians who are still on the crossing. You may proceed if the crossing is clear. This stage does not exist at Puffin crossings.

  18. How long does alcohol stay in your system after drinking?

    • AAbout 30 minutes, whatever you have drunk
    • BIt never leaves your system
    • C1 hour per unit of alcohol
    • DIt is absorbed and cleared almost instantly

    Answer: As a rough guide, one unit of alcohol takes about 1 hour to leave your system. The body can only process alcohol at a fixed rate, so drinking large amounts means it stays in your system for many hours.

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