Final answer:
Cars on the freeway have the right of way, with merging vehicles needing to yield and accelerate appropriately for safety. Calculating the time to merge is valuable for traffic engineering. A rabbit crossing a freeway is at risk, regardless of traffic lanes and vehicle positions.
Step-by-step explanation:
When entering a freeway from a merging lane, the cars on the freeway have the right of way. The vehicles entering from the merge lane must yield and adjust their speed to safely merge into the flow of traffic. This often requires drivers to accelerate to match the freeway traffic speed. Traffic engineers may calculate the necessary time and distance required for a car to accelerate on an on-ramp to merge safely, considering factors such as the car's initial velocity and acceleration rate.
Regarding the safety of a rabbit crossing a freeway, it would be risky and could depend on variables such as the speed of the traffic and the rabbit's own speed. Even if a car is traveling in the furthest lane from the rabbit, other vehicles or unforeseen circumstances could pose a danger to the rabbit attempting to cross multiple lanes of fast-moving freeway traffic.