bhutan
A way to find out its to call all the factories that manufacture traffic lights and see the sales reports of each country since 1912 when the first traffic light was created by a police man.
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.
It depends which country you are in! Traffic lights were first used in England (outside the Houses of Parliament in London). They were similar to the signals used on the railways.
A traffic light you seen change to green
Yes. That is why they are called traffic lights.
your not so bright
The first traffic light was invented in December 10, 1868. The electric traffic light was invented in 1912. The Automatic Traffic light was invented in 1927.
Don't look; I'm changing
It is usually on the bottom of the traffic light.