History: Invention of the First Traffic Light

Traffic Lights

The world’s first traffic light was not used for the purposes that it is used for today. There had to be some new concept development for pedestrian lights, because of increasing traffic volume and high numbers of accidents. Until then they had been small-sized traffic lights. Peglau’s formal principles were concreteness, archetypal behavior symbols, distinctive feature and emotional responsiveness.

Traffic Lights

Traffic lights as we know them to date from 1912 when one Lester Wire of Salt Lake City, Utah, who was head of the city’s traffic squad, invented a two-color, red-green system. Wire never patented his device though it was apparently employed in Salt Lake City. In 1913, James Hoge of Cleveland submitted a patent in the United States for an electric Municipal Traffic Control System” that consisted of traffic control boxes or signals at street intersections and other suitable points.” Hoge’s objective was to permit policemen to better control traffic in order to give priority to emergency vehicles.

According to other sources, in our country, the first traffic light appeared in 1929 in Moscow. It was like a round watch with three sectors – red, yellow and green. And the traffic controller manually turned the arrow, setting it to the desired color. When changing colors was provided for the sound signal emitted by the traffic controller with a whistle. Then in Moscow and Leningrad (as St. Petersburg was then called) electric traffic lights appeared with three sections of the modern type.

Traffic Lights

As with railway signals, Knight’s device used semaphore-style signals: horizontal arms meant stop; arms at a 45-degree angle meant caution. At the top of the contraption’s 22ft post was a gas-powered lamp with a revolving head, on opposing sides of which were green and red glasses. The gas lamp signal was employed at night. Both the daytime arms and the night-time lamp were operated by a policeman.

By 1930, all major American cities and many small towns had at least one electric traffic signal, and the innovation was spreading around the world. The simple device tamed the streets; motor vehicle fatality rates in the United States fell by more than 50 percent between 1914 and 1930. And the technology became a symbol of progress. To be a one-stoplight town” was an embarrassment. Because of the potent power of suggestion, or a delusion of grandeur, almost every crossroad hamlet, village, and town installed it where it was neither ornate nor useful,” the Ohio Department of Highways grumbled.

Traffic Lights

At one time two-color stoplights, which displayed only red and green signals to motorists, evolved from a form where red overlapped green, and both appeared lit for several seconds before the green light terminated. In the late 1990s and early 2000s, some of these traffic signals remained in service in areas of Queens, like Ozone Park, Richmond Hill, and the Rockaways.

Now, more people use led car light in their vehicle, a 9004 led headlight bulb conversion kit 6000K would be 25 dollars, a good quality led headlight can avoid the oncoming traffic accident, the traffic light would remind the driver pay attention to the front road when there is a driving rule.

Leave a Reply

Your email address will not be published. Required fields are marked *