The answer options
- When you are lost and travelling slowly
- When your headlights don't work in the dark
- When temporarily parked on double yellows outside a shop
- When temporarily stopped and obstructing trafficCorrect
Why that is the answer
Hazard warning lights may be used when your vehicle is stationary to warn other road users that you are temporarily causing an obstruction. The Highway Code also permits their use on high-speed roads to warn following traffic of severe congestion ahead. You must never use them while moving, nor as an excuse to park illegally, such as on double yellow lines while popping into a shop.
How this comes up in the real test
Questions from incidents, accidents and emergencies 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 incidents, accidents and emergencies questions
- After a collision, someone is unconscious in their vehicle. When should you call the emergency services?
- An adult casualty isn’t breathing. CPR should be administered to keep the blood flowing. How hard should you press against their chest?
- An injured motorcyclist is lying unconscious in the road. The traffic has stopped and there’s no further danger. What could you do to help?
- An injured person has been placed in the recovery position. They’re unconscious but breathing normally. What else should be done?
- At an incident, a casualty is unconscious but breathing. When should you move them?
- At an incident, a casualty isn’t breathing. What should you do while helping them to start breathing again?