Traffic Signal or Traffic light

A traffic signal, or stoplight controls vehicle traffic passing through the intersection of two or more roadways by giving a visual indication to drivers when to proceed, when to slow, and when to stop. In some cases, traffic signals also indicate to drivers when they may make a turn. These signals may be operated manually or by a simple timer which allows traffic to flow on one roadway for a fixed period of time, and then on the other road-way for another fixed period of time before repeating the cycle. Other signals may be operated by sophisticated electronic controllers that sense the time of day and flow of traffic to continually adjust the sequence of operation of the signals. Traffic engineers use signals to avoid traffic congestion and improve safety for both motorists and pedestrians alike.

The traffic signal works on light signals, which include three colours: red, yellow and green.

What does green light signal mean?

Green-colored traffic light used to signal drivers, pedestrians, etc., that they may proceed. 2. Authorization; approval; permission.

What does yellow light signal mean?

Yellow signal means that you have to slow down your vehicle before the signal turns red. Lastly, the green signal means to go, however you should check the intersection to see if any vehicle is still crossing.

What does red light signal mean?

The color ‘RED’ on the signal light indicates to stop well before the stop line and not to crowd the intersection. Turn left in a red signal only when there is a sign to do so. While turning, yield the right of way to pedestrians and vehicles coming from other directions.

Red light on: This tells drivers to stop.

Green light on: This means the driver can start driving or keep driving.

Yellow light on: This tells drivers to stop when it is safe to, because the light is about to turn red.