In dictionaries:
air traffic control
Management of aircraft within airspace.
air route traffic control center
Coordinates air traffic over regions.
Air traffic control radar beacon system
The air traffic control radar beacon system is a system used in air traffic control to enhance surveillance radar monitoring and separation of air traffic.
Centralized traffic control
a form of railway signalling that originated in North America.
Manual on Uniform Traffic Control Devices
The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration of the United States Department of Transportation to specify the standards by which traffic signs, road surface markings, and signals are designed, installed, and used.
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