air traffic flow management
英[eə(r) ˈtræfik fləu ˈmænidʒmənt]美[er ˈtræfɪk flo ˈmænɪdʒmənt]
Air traffic flow management (usually seen abbreviated as ATFM) is the regulation of air traffic in order to avoid exceeding airport or air traffic control capacity in handling traffic, and to ensure that available capacity is used efficiently.