Which of the following statements about MEAs is true?

MEAs, or Minimum Enroute Altitudes, are designed to ensure safe navigation between waypoints in the National Airspace System. The correct statement about MEAs is that they indicate the minimum height above obstacles along a specific route. MEAs provide a level of safety by ensuring that aircraft maintain sufficient altitude to clear terrain and obstacles, which is crucial for maintaining safety during instrument flight, particularly in areas with varying topography.

This altitude is calculated to allow for a buffer above obstacles and to provide adequate navigation signal reception. It is not influenced by weather conditions; rather, MEAs are consistent altitudes that pilots must adhere to regardless of current weather factors. MEAs are also not determined solely by air traffic control, as they are published in aeronautical charts and are derived from established safety standards and regulatory requirements. Finally, MEAs are not exclusive to visual flight rules; they are specifically relevant to instrument flight rules (IFR) operations, where precise altitude and navigation are critical.