Final answer:
At highway speeds, the correct following distance to look ahead of your vehicle is approximately ¼ mile. This corresponds to option 3) 1/4 and ensures adequate time to respond to road hazards, considering the speed limit and conversion from kilometers to miles.
Step-by-step explanation:
The safe following distance at highway speed is a crucial factor for ensuring safety while driving. When traveling at highway speeds, a good rule of thumb for the distance you should look ahead of your vehicle is about ¼ mile. This distance allows for adequate time to perceive and react to hazards on the road, making it possible to avoid potential collisions or other driving-related incidents. This recommended distance corresponds to option 3) in your multiple-choice question.
On highways where speeds can reach approximately 100 km/h (which is about 62 miles per hour, considering 1.0 mile is roughly 1.609 kilometers), having a ¼ mile forward observation gives drivers enough forward visibility and time to respond to changing traffic conditions or obstacles that may appear in their path. It is important to adjust this distance accordingly in poor visibility or adverse weather conditions, where increased following distance is advised for extra safety.