Which is an indicated scenario where danger on the road is present?

The scenario that indicates danger on the road is when a driver is driving without lights at night. This situation poses a significant risk not only to the driver but also to other road users. Without the proper illumination, a vehicle becomes less visible to others, increasing the likelihood of collisions. Utilizing headlights is crucial for ensuring visibility and safety during nighttime driving, as it allows other drivers and pedestrians to see the vehicle and understand its movements.

Sounding the car horn during the daytime can be a warning signal to alert other drivers or pedestrians of potential danger, but it is not inherently dangerous itself. Driving with loud music may distract the driver, but it does not directly impact visibility or presence on the road as the lack of lights does. Ignoring traffic signals represents a serious traffic violation and can lead to dangerous situations, but it is the absence of lights at night that critically compromises safety on the road.