The History and Meaning of Colored Traffic Lights

Traffic lights, traffic signals, or stoplights, are signalling devices positioned at road intersections, pedestrian crossings, and other sites to control traffic flows.

Traffic lights typically include three signals, which communicate important information to automobiles and cyclists using various colours and symbols, such as bicycles and arrows. Red, yellow, and green are the standard traffic light colours, and they are often shown vertically or horizontally in that sequence.

Despite being globally standardized, there are differences in traffic light legislation and sequences at the national and municipal levels.

On Parliament Square in London, the technique was first used in December 1868 to lessen the need for police personnel to regulate traffic. Since then, traffic light technology has progressed and intersection capacity has increased thanks to electricity and computerized control.

Other uses for the system include regulating pedestrian traffic, variable lane control (for tidal flow systems or smart highways), and level crossings for railroads.

The History and Meaning of Colored Traffic Lights

On December 9, 1868, the first set of traffic lights was put in place outside the Houses of Parliament in London to take the position of police officers who had been in charge of directing traffic.

Semaphore traffic signals, similar to the one in London, were in use throughout the United States throughout the first two decades of the 20th century, with each state having its own unique design.

When changing the commands on this signal, traffic police would frequently blast a whistle to aid notify drivers of the change. It often comes in red, green and yellow.

Green signifies “go” to us. If the signal is green, you are free to cross the crossing. However, bikes and pedestrians must proceed through the crossing first. If you’re making a left turn, you must give way to any oncoming traffic that is proceeding straight through the intersection.

We can tell that the signal is about to turn red by looking for a steady yellow light. When you reach the crossroads, take care to avoid hitting anything. But if you haven’t reached the intersection yet and it’s secure to halt, do so.

A red arrow that is not flashing may also be regarded as a stop sign. In some jurisdictions, the vehicle must come to a complete stop until the signal turns green. To be sure you are adhering to state regulations, see your state’s driver’s manual.