Final answer:
Fast-moving vehicles should use the leftmost lane on a highway with three or more lanes. This practice promotes an orderly flow of traffic based on the principles of motion in one direction and is also for safety reasons.
Step-by-step explanation:
On a highway with three or more lanes going in one direction, fast-moving vehicles should use the leftmost lane, also known as the passing or fast lane, while slower vehicles should use the right lanes. This is because the motion of vehicles on a highway can be better managed when faster-moving vehicles have a designated lane, allowing them to overtake slower vehicles safely. It aligns with the principles of motion in one direction, where each lane can be seen as a path for vehicles with different velocities, ensuring a smoother flow of traffic and reducing the potential for accidents.
A rabbit crossing the freeway, it can be quite risky for an animal to cross multiple lanes of traffic, regardless of which lane vehicles are traveling in. The safety of the rabbit would depend on the speeds of the vehicles, the traffic density, and the ability of the rabbit to move quickly across the lanes.