What is a Traffic Light?
Traffic Light according to wikipedia is a light that controls the flow of traffic that is installed at road junctions, pedestrian crossings (zebra cross), and other traffic flow places. This light indicates when the vehicle has to walk and stop alternately from various directions. Traffic regulation at road intersections is intended to regulate the movement of vehicles in each group of vehicle movements so that they can move alternately so that they do not interfere with each other between the existing flows.
Brief History of Traffic Light
The first traffic light itself was first made in 1868 in London. The making of this lamp was made because at that time there were already many motorized vehicles. There were still two traffic lights at that time, namely red and green. Three years later, Traffic Light was banned by the London government. At that time, one of the traffic lights exploded, injuring one of the policemen who were not far there. In the next few days, a new type of Traffic Light was made with a "stop" and "walk" sign. In the following years, Traffic Light Lights also experienced development, until they became what they are now.
Types of Traffic Light Types
Based on the scope:
- Separate traffic light
- Coordinated traffic light
- Network traffic light
Based on the way of operation:
- Fixed time traffic signal
- Actuated traffic signal
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