Final answer:
Children, elderly individuals, and distracted pedestrians are most at risk of traffic accidents due to various factors including awareness levels, reaction times, and distractions like cell phones.
Step-by-step explanation:
The three pedestrians most likely to be involved in a traffic accident are children, elderly individuals, and distracted pedestrians. Children are often less aware of their surroundings and may act unpredictably near roadways. Elderly individuals may have reduced mobility and slower reaction times, making them vulnerable when crossing streets or navigating traffic conditions.
Distracted pedestrians, including those using cell phones or other electronic devices, may not be fully attentive to traffic signals or vehicles, increasing their risk of accidents. The installation of a traffic signal at high-risk intersections, such as those near campuses where students frequently cross, can significantly reduce these incidents. Additionally, traffic signals serve as a critical control measure to prompt drivers to slow down and stop, especially in areas where reports indicate regular collisions, some with severe consequences such as loss of life.