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A)
1:T
2:F
3:F
4:T
5:T
6:F
B)
1.The first electric traffic light was invented in 1912
2.The first electric traffic light was invented by Lester Wire
3.The first electric traffic light did have three colour
4.The lights were first installed in Cleveland, Ohio, at the corner of 105th and Euclid Avenue.
6.In 1920, a Detroit police officer named William Potts added the yellow
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1.The device was made in response to the desire by a Select Committee to use railway signals on highways.
2.The light was called semaphore.
3.But Knight's invention was not to last long. After only a month of use the device exploded and injured the police officer who was operating the light.
4.Toledo, Ohio in 1908, the arms where eight feet above ground.
5.B
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THE FIRST ELECTRIC TRAFFIC LIGHTS
In the early 1900's, the world was developing at a very rapid pace, and with the growth of industrialization, cities became more crowded. Furthermore, with the invention automobiles, the traffic on the roads increased significantly, so there was a need for a better traffic system.
In 1912, an American policeman, Lester Wire, who was concerned with the increasing traffic, came up with the idea of the first electric traffic light. Based on Wire's design, the lights were first installed in Cleveland, Ohio, on August 5, 1914, at the corner of 105th and Euclid Avenue.
The first electric traffic light had only red and green lights; it did not have a yellow light like modern- day traffic signals. Instead of a yellow light, it had a buzzer sound that was used to indicate that the signal would be changing soon.
In the year 1920, a policeman named William Potts in Detroit, Michigan invented the first four-way and three-colored traffic lights. Apart from red and green, a third color - amber (or yellow) - was introduced. Detroit became the first city to implement the four-way and three-colored traffic lights. In the 1920's, several automated traffic signals were installed in major cities around the world. The modern traffic light still uses this famous T-shaped model with three different colors.
116. When was the first electric traffic light invented?
A. In the early 1900's B. In 1912 C. On August 5, 1914
117. Who invented the first electric traffic light?
A. William Potts B. Lester Wire C. Euclid Avenue
118. How many colors did the first electric traffic light have?
A. 2 B. 3 C. 4
119. Where were the lights first installed?
A. Cleveland, Ohio B. Euclid Avenue C. at the corner of 105th
120. Where were the first three coloured traffic lights used?
A. Detroit B. Ohio C. Euclid Avenue
Model traffic light are an American invention . Red-green system were installed in Cleveland in 1914 . Three color signals were traffic light in New York in 1918 . They used to be operated by hand from a tower in the middle of street.The first light of the type appeared in London,on the junction between St.James and Piccadilly,in 1925. Automas signals were installed a year later .In the past , traffic lights used to be very special . In New York , some light used to put a statue on top .