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.
Alertness: example questions & answers
12 worked examples with answers and explanations below. Practise all 18 Alertness questions free in the browser, with instant feedback on every answer.
What should you do if you feel yourself becoming drowsy while driving on a motorway?
- AOpen the windows for fresh air and continue
- BLeave the motorway at the next exit and find a safe place to rest✓
- CSpeed up to stay alert
- 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.
When driving at night, why is it particularly important to reduce your speed?
- ATo save fuel
- BBecause your headlights only illuminate so far ahead, limiting how much time you have to react✓
- CTo avoid disturbing other road users
- DBecause the car is harder to control
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.
You're driving in heavy rain at 60mph. What should you do to maintain safe alertness?
- AIncrease speed to get through it faster
- BReduce speed and increase your following distance✓
- CTurn on your fog lights and full beam
- DFocus only on the road directly ahead
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.
What is the main reason for using mirrors regularly while driving?
- ATo check your appearance
- BTo maintain awareness of traffic behind and to the sides of your vehicle✓
- CTo look at advertising boards
- DTo adjust your seat
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.
You're approaching a bend but cannot see the road ahead. What should you do?
- AMaintain your current speed and assume the road is clear
- BSpeed up to get through the bend quickly
- CReduce speed so you can stop if necessary✓
- DSound your horn to warn other vehicles
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.
What should you do if you miss a turning while driving?
- AReverse back to the turning
- BMake a U-turn immediately
- CContinue to the next safe place to turn around✓
- DStop on the hard shoulder and wait
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.
How often should you check your mirrors when driving?
- AOnly before turning
- BEvery 5-8 seconds✓
- COnly when changing lanes
- DOnce every minute
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.
You notice a car ahead has their brake lights on and off repeatedly. What might this indicate?
- AThe driver is showing off
- BThe driver is testing their brakes
- 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.
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 impairs judgment, reaction time, and concentration✓
- DIt only affects vision
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.
When driving on a motorway at night, what should you do if you feel tired?
- AContinue but use high beam lights
- BOpen all windows and turn off the heater
- CTake the next exit and have a 15-minute nap or stop for refreshment✓
- DIncrease your speed to maintain alertness
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.
What is the most likely reason for fatigue-related accidents?
- ABright sunlight
- BToo many passengers
- CReduced alertness and slower reaction time due to tiredness✓
- DRadio being too loud
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.
How often should you take a break when driving long distances?
- AEvery hour
- BEvery 2 hours or 100 miles✓
- COnly when the fuel tank is empty
- DNever, if you feel alert
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.