MEA refers to which of the following altitudes?

MEA stands for Minimum Enroute Altitude. This altitude is crucial for ensuring safe navigation along an airway in instrument flight. It guarantees obstacle clearance and provides adequate signal reception from navigational aids along the route. When flying at or above the MEA, pilots can expect a minimum vertical clearance over obstacles, thus enhancing safety for aircraft navigating through potentially hazardous terrain.

Furthermore, the MEA helps ensure that aircraft maintain a safe altitude, especially when transitioning between airspaces or areas with varying terrain heights. By adhering to the MEA, pilots can avoid altitudes that could potentially expose them to hazards such as unobserved terrain features or man-made structures. This regulation aids in maintaining safe flight paths and contributes to overall air traffic safety.