How is a Route defined in air traffic procedures?

A Route in air traffic procedures is specifically defined as a path that consists of one or more horizontal courses. This describes how aircraft navigate through controlled airspace and maintain separation from one another while following a predetermined course. The definition emphasizes the importance of horizontal navigation, which is crucial for maintaining safe distances and ensuring efficient traffic management.

The concept of a route encompasses more than just a single course; it can include multiple segments, waypoints, and turns that guide aircraft from one point to another. This horizontal plane aspect is critical for coordinating flight paths, especially in congested airspace.

In contrast, the other options do not accurately encapsulate the definition of a route. The series of altitudes pertains more to vertical navigation or flight levels rather than a route itself. A vertical corridor, while relevant to air traffic control, does not describe the horizontal path that aircraft follow. Lastly, recommending a speed for aircraft is related to operational efficiency but does not define how a route is structured or understood in terms of air traffic procedures. Thus, the correct understanding of a Route aligns with the definition provided in the chosen option.