Final answer:
Warning signs on roads are intended to alert drivers to potential safety hazards ahead. They play a critical role in preventing accidents by ensuring that drivers are aware of and can prepare for dangerous road conditions.
Step-by-step explanation:
The purpose of warning signs on roads is to warn of existing or possible hazards. These signs are designed to alert drivers to potential dangers ahead, such as sharp turns, steep descents, or areas where animals might cross. Understanding these signs is crucial for road safety and helps to prevent accidents. While other signs might indicate amenities like gas stations or rest areas, warning signs specifically focus on safety by informing drivers of road conditions that require caution.