When can a driver use hazard lights?

Using hazard lights is specifically intended to alert other road users of unexpected or dangerous situations. When a driver activates hazard lights, it signals to others that they should be aware of potential hazards ahead, such as a vehicle that has stalled, an accident scene, or any situation that might cause a slow-down or stop. This is crucial for maintaining safety on the roadway, as it helps prevent collisions by warning other drivers to exercise caution.

In contrast, while hazard lights can be seen in situations like being parked on the road, signaling a traffic stop, or during a roadblock, these usages are not the primary or correct purpose for activating hazard lights. Each of those scenarios has specific signaling methods or safety protocols that are more effective and compliant with traffic regulations. Therefore, the correct context for using hazard lights primarily revolves around warning others of danger, ensuring a safer driving environment for everyone.