Final answer:
Traffic signals are vital for ensuring road safety by forcing vehicles to adhere to speed limits and facilitating pedestrian crossing. Increases in traffic accidents at an intersection warrant the installation of such signals. Overall, traffic signals contribute to reducing speed-related accidents and improving pedestrian safety.
Step-by-step explanation:
The introduction of a traffic signal at a busy intersection can significantly enhance safety for both motorists and pedestrians. It does so by controlling the flow of traffic, ensuring that vehicles slow down and adhere to the posted speed limits. This is critical because vehicles that speed through intersections without regard for speed limits pose a risk to everyone in the area.
Pedestrian safety is another crucial consideration. In the vicinity of campuses, where students and others frequently need to cross the road, having to dodge traffic adds a dangerous element to their daily commute. A well-timed traffic signal provides designated periods for pedestrians to cross safely, minimizing the risk of accidents.
Lastly, the rising number of accidents at a particular intersection is a decisive factor for the installation of a traffic signal. It is not unusual for such intersections to witness frequent traffic collisions, sometimes with fatal outcomes. The increase in accidents is a clear indicator that traffic control measures are needed to prevent loss of life and ensure safer road conditions for all.