Air transportation is a highly safe mode of transportation. In part, this has come about as technological advances have improved aircraft, navigation systems, and air traffic control. There have also been significant advances in relevant ergonomics and in aircrew training and practices....

Deregulation of the US domestic air transport market in 1978 brought significant benefits to air travelers. The scheduled airlines have been given the freedom to improve their efficiency through being able to adopt efficient network strategies and more effective operating practices. This study...

The Perimeter and High-Density Rules have been the foundation upon which the physically limited capacity of Ronald Reagan Washington National Airport has been allocated. The perimeter rule at National Airport requires nonstop scheduled airline flights from that airport to serve destinations...