Traffic light and Traffic control

Traffic light noun - A visual signal to control the flow of traffic at intersections.

Traffic control and traffic light are semantically related. in traffic signal topic. In some cases you can use "Traffic control" instead a noun phrase "Traffic light".

Traffic control noun - Control of the flow of traffic in a building or a city.

Traffic light and traffic control are semantically related. Sometimes you can replace phrase "Traffic light" with "Traffic control", this phrases are similar.