traffic control

The air traffic control system had previously processed more than 15 million flight plans without the scenario being seen.

The second item on his to-do list involves continuing negotiations with the city of L.A., which will have to provide traffic control, garbage collection and other services at venues.

They also put in place additional traffic control measures to protect the cyclists.

Audio of the passenger jet's crew alerting air traffic control to the potential threat was recorded by a Dutch plane spotter.

They have to work with the police on permits and traffic control.