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Traffic lights work on a timer, but if you look closely on the road when your stopped at the traffic lights, you should see a rectangle like shape under the car it is called a sensor
And when you drive on it, a signal is sent, so the timer knows a car is waiting, if no other cars are going the other way, the timer will change and the light will go green so you can go.
I hope this answer helps.
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∙ 13y ago
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How does a traffic light timer work?
It is acctually a sensor.
What year was the traffic light inveted?
The traffic light was made in 1823.
Why red light is used as the traffic light?
red light is used in traffic lights because red light has a "longer wavelength" than other colours
How was a traffic light invented?
the traffic light was invented because back in the day people didnt know what to do when driving and cars were new and to prevent people from crashing and accidents they invented the traffic light
Is a traffic light a light reflector or light source?
light source
How does a traffic light timer work?
It is acctually a sensor.
What is the opposite of heavy traffic?
The opposite would be "light traffic".
What happnes if the traffic light system brakes down?
If a traffic light breaks most cities will assign a traffic cop to regulate traffic until the light can be fixed.
What year was the traffic light inveted?
The traffic light was made in 1823.
What did the big traffic light say to the little traffic light?
your not so bright
What does a fresh traffic light means?
A traffic light you seen change to green
Can a traffic light emit light energy?
Yes. That is why they are called traffic lights.
When was the traffice light invented?
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.
What did the traffic light say to the other traffic light?
Don't look; I'm changing
On a standard traffic light is the green on the top or the bottom?
It is usually on the bottom of the traffic light.
Who evented the traffic light?
J.P. Knight is the person who invented the traffic light. J.P. Knight invented the traffic light in 1868 in an effort to prevent fatalities on the roads.
What are traffic lights used for?
inventor of the traffic light
