The road described is known as a boulevard, which is designed to aid in traffic fluidity and safety. Divided highways, roundabouts, and freeways are distinctly different types of roads. Safety for a rabbit crossing a freeway cannot be assured without context.
The type of road described as a multi-lane, 2-way road with a center left-turn lane is most commonly known as a boulevard. This kind of road layout allows for smoother traffic flow by providing a dedicated lane for vehicles making left turns, thus reducing the need for left-turning vehicles to block the through lanes. Such designs improve safety and reduce congestion on busy city streets.
A divided highway usually has a physical barrier or median separating opposite directions of traffic. A roundabout is a type of circular intersection or junction in which road traffic flows almost continuously in one direction around a central island. Lastly, a freeway is a type of controlled-access highway with no at-grade crossings or traffic signals.
Without additional context about traffic volume, visibility, and speeds, it would be speculative to determine if a rabbit can cross all 3 lanes of the freeway safely. This would greatly depend on various factors including the rabbit's speed and alertness, as well as driver awareness and current traffic conditions. In an ideal scenario with no vehicles on the road, a rabbit could cross three lanes with each being 3 meters wide. However, in real-life scenarios, there are no guarantees for such a crossing to be safe.