UK Driving Theory Practice Exam

When should warning triangles be used on the road?

1. When driving in foggy conditions

2. When broken down

3. When parked at night

4. When approaching a roundabout

The correct answer is: When broken down

Using warning triangles is essential for alerting other road users to potential hazards on the road, particularly when a vehicle has broken down. In such situations, placing a warning triangle behind your vehicle helps to warn oncoming traffic, giving them advanced notice of your presence and encouraging them to proceed with caution. This can significantly enhance safety for both the driver and other road users, reducing the risk of accidents. While driving in foggy conditions requires additional precautions (like using fog lights), a warning triangle is not specifically used in that scenario. Similarly, parking at night calls for vehicle lights to be used to increase visibility, but again, warning triangles are not standard practice. Approaching a roundabout also does not necessitate the use of a warning triangle, as it relates more to direction and traffic management rather than a hazard. Thus, the correct context for deploying a warning triangle is indeed when a vehicle is broken down.