Question

Lanes of traffic on expressways flowing in different directions are divided by?

Answer 1

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.