What does RVSM stand for?

RVSM stands for Reduced Vertical Separation Minima. This concept is a critical aspect of air traffic management that allows aircraft to operate with reduced vertical separation between them at cruising altitudes. Traditionally, the standard vertical separation between aircraft was 2,000 feet. However, through the implementation of RVSM, this separation is reduced to 1,000 feet for aircraft operating between 29,000 feet and 41,000 feet above sea level, provided they are equipped with specific altimetry and monitoring systems.

The rationale behind RVSM is to optimize airspace usage and improve the flow of air traffic while maintaining safety. By reducing vertical separation, more aircraft can fly within the same vertical space, leading to increased efficiency and capacity in busy air corridors.

Other options mentioned do not accurately reflect the established aviation terminology relating to vertical separation and air traffic management, making RVSM the appropriate choice.