What is the primary use of VOR in air traffic management?

The primary use of VOR (VHF Omnidirectional Range) in air traffic management is to provide a reference for navigational courses. VOR is a type of radio navigation system that allows pilots to determine their position and stay on a desired flight path by triangulating their position with ground stations. It emits signals that enable aircraft to navigate accurately by aligning their flight course with the signals received from the VOR station.

Using VOR helps pilots maintain their intended flight path, particularly during en route navigation, approach procedures, and CRM (crew resource management) activities. This capability is essential for ensuring safe and efficient air traffic management by facilitating navigation and reducing the risk of navigational errors.

The other options do not accurately reflect the primary function of VOR. While VOR is valuable during approaches in poor weather, it does not directly assist in the safe landing process or in tracking aircraft speed and fuel consumption, which are functions of other systems and technologies. VOR's primary role in providing navigational assistance is what makes it a key element in aviation operations.