Cleveland
the govnerment or president controlled the nation's rail traffic. the police man controlled the nation'srail traffic.
The first traffic light was used in Great Britain in December 1868. It controlled traffic on London's three busiest streets: Bridge Street, Great George Street and Parliament Street.
Controlled Intersection
A traffic signal is controlled by a control box on the side of the intersection, the control box receives data from electromagnetic sensors under the pavement, and that data is processed by amplifiers inside of the box and the traffic controller makes the appropriate decision on what to do. So to answer the question, the traffic light is a decision made by the traffic controller which is a output.
At first it wasn't. It was every car for itself. Next, came officers in the street controlling traffic. You see this when there is an accident today. In some cities in Europe officers are still in the street controlling traffic.
After months of practice, she finally controlled her fear and gave a flawless performance on stage.
Observe the traffic flow, enter the pattern, and look for a light signal from the tower.
The opposite would be "light traffic".
If a traffic light breaks most cities will assign a traffic cop to regulate traffic until the light can be fixed.
The traffic light was made in 1823.
Some lights have sensors :)