Final answer:
Reducing speed on hills is critical for safety due to limited visibility and the need to react to obstacles. Constant mirror checking ensures awareness of surrounding traffic and promotes better situational responses.
Step-by-step explanation:
The question pertains to the importance of reducing speed and the necessity of frequent checking of rearview and side mirrors when navigating hills. This practice is crucial for the safety of motorists as it provides better control and preparation time in the event of obstacles or sudden changes in traffic conditions. It is essential to slow down when approaching hills because a vehicle's visibility is often compromised. Checking the mirrors regularly helps ensure that you are aware of other vehicles around you, giving drivers the ability to react properly to unexpected situations such as slower cars, animals on the road, or debris. Since reaction times are proportional to speed, a higher speed implies a longer distance to stop the vehicle, making it necessary to reduce speed in uncertain conditions like hilly terrains.
Several scenarios illustrate the importance of this approach. For instance, when driving through intersections where others may speed or when driving behind slower-moving vehicles, the need arises to be vigilant and patient. Moreover, the perception of being watched, as if by a police car, increases safe driving behaviors. All these points underscore the necessity to adjust speed and stay observant for the safety of oneself and others on the road.