Answer: Median
Explanation:
The median is the center divider in highways. The median separates traffic that travels in opposite directions to prevent collisions. The median could be a concrete barrier or it could be unpaved grass, or perhaps a combination of both. Other median types are possible as well. Metal guardrails may be present on either side of the median.
Side note: The word median comes from the Latin medius which translates to middle or central.
