traffic controller
nounUK /ˈtræfɪk kənˈtrəʊlə/
US /ˈtræfɪk kənˈtroʊlər/
A person who tells cars and trucks when to stop and when to go.
The traffic controller waved us across the busy road.
OTHER MEANINGS
2. A person on the ground who directs airplanes moving on the airport tarmac.
The traffic controller guided the plane to its gate.
3. A device or computer system that manages the flow of data or vehicles.
The network traffic controller balanced the incoming requests.
4. A person who manages the movement of trains or ships in a busy area.
The harbor traffic controller kept the boats safely apart.