What can be the consequence of wrongly setting the headlamp levelling control?

The correct combination of answers is essential because it reflects the potential consequences of incorrectly setting the headlamp levelling control.

Firstly, dazzling oncoming traffic with your dipped headlights can lead to dangerous situations. According to German traffic rules, drivers must ensure their headlights are properly adjusted to avoid impairing the vision of other road users.

Secondly, if your car's headlamp range is too short, you might not see obstacles or road signs clearly, which can increase the risk of accidents. Proper headlamp adjustment is vital for safe night-time driving.

The third option regarding the life-cycle of the light bulb is less critical in the context of immediate road safety but is still relevant in terms of car maintenance and cost efficiency.

In summary, understanding all these aspects helps ensure the safety of all road users, which is a primary principle in traffic regulations.