What is true about Military Training Routes (MTR)?

Military Training Routes (MTR) are specifically designed for military aircraft to conduct training operations, allowing them to fly at various altitudes and speeds while avoiding interference with civilian aircraft.

The identification of MTRs is visually represented on aeronautical charts with shaded black lines, which makes them easily recognizable to pilots, both military and civilian. This visual cue signifies that the area is designated for military training and alerts other aircraft to exercise caution when flying in or near these routes.

Understanding the visual representation (shaded black lines) is crucial for navigational awareness and situational safety for all airspace users. The other aspects, such as speed limits, permission to enter, and altitude restrictions, can vary based on specific circumstances and are not universally applicable to all MTRs, making the identification method the most universally true characteristic.