Final answer:
Pentagonal signs signal school crossings. These signs aim to protect students in school zones by warning drivers and decreasing traffic-related accidents.
Step-by-step explanation:
Pentagonal signs are used to indicate areas where school crossings are present. They are designed to alert drivers to potential hazards of children crossing the road. In situations where pedestrian safety is a concern, especially in school zones where students are often crossing streets to come to or leave campus, traffic signals and signs play a vital role in ensuring safety by allowing pedestrians to cross at designated times and making drivers aware of the need to slow down.
Implementing such measures not only reduces the need for pedestrians to dodge traffic but can also significantly decrease the risk of accidents. This is crucial in areas with a high incidence of traffic accidents, as the safety measures aim to protect lives and prevent tragedies that have occurred in places without proper signals or signage.