Final answer:
Caution signs are used to alert drivers of areas where animals, people, and vehicles may be crossing. These signs help drivers anticipate potential hazards ahead and promote road safety.
Step-by-step explanation:
The signs that alert drivers in advance of areas where animals, people, and vehicles may be crossing are called caution signs. These signs are usually yellow and have pictograms of the hazards that drivers should watch out for. For example, the sign may show pictures of animals, pedestrians, or vehicles crossing the road.
Caution signs help drivers anticipate potential hazards ahead and adjust their speed or take necessary precautions. They are important for promoting road safety and preventing accidents.