Final answer:
Unsafe speed and not following stop signs, signals, and signs are both common causes of collisions. Unsafe speeds prevent timely reactions and control, while ignoring traffic signals disrupts traffic flow and safety, often leading to accidents and the necessity for additional safety measures like installing traffic signals.
Step-by-step explanation:
Both unsafe speed and not following stop signs, signals, and signs are considered common causes of collisions. Unsafe speeds increase the likelihood of accidents because drivers may have less time to react to traffic changes and are more likely to lose control of their vehicles. In addition, when drivers ignore traffic signals and signs, they disrupt the flow of traffic and create unpredictable situations, further elevating the risk of collisions.
The impact of these behaviors on safety can be dire. For example, at intersections where many vehicles disregard speed limits, the installation of traffic signals might be necessary to compel drivers to slow down and thereby reduce accidents. Furthermore, ensuring that pedestrians have a safe way to cross the road by obeying traffic signals is crucial, especially in areas with high pedestrian traffic like school zones.
Ultimately, exhibiting safe driving habits by adhering to speed limits and signals is crucial to preventing accidents. Violating these rules serves as a recipe for increased collisions, putting both drivers and pedestrians at risk.