Final answer:
Headlights that are too strong can cause glare and interfere with other drivers' vision.
Step-by-step explanation:
Headlights that are too strong are prohibited because they can cause glare and interfere with the vision of other drivers. When headlights are too intense, they can create a blinding effect, making it difficult for other drivers to see the road clearly. This is especially dangerous at night or in adverse weather conditions.