by Sebastian Bitticks
It took many years to develop the traffic light that we know today.
歷經多年,紅綠燈才演變成現今的面貌。
The first-ever traffic light is actually older than cars are.
Installed outside the London
parliament in 1868, the
revolving gas lamp was used by a police officer to control the _(1)_
pedestrian and horse traffic. Unfortunately, in 1869 it
exploded, _(2)_ the police officer
operating it.
From then on, traffic only got worse.
The
advent of the
automobile made directing traffic
by hand less and less _(3)_. Throughout the United States,
frustrated fire and police officials were _(4)_ for ways to improve their city's traffic. Between 1918 and 1923, several designs for traffic lights
came about. Each one had been
put forward by concerned city workers hoping to help with the _(5)_ of traffic.
The first electric design for a traffic light came from Salt Lake City, Utah in 1912.
Detective Lester Wire
mounted a wooden box upon a high
pole and _(6)_ the lights to the
electric line for power. Like London's original light, this was controlled by hand. A very different design was developed by the American Traffic Signal Company in Cleveland, Ohio in 1914, which
combined a
buzzer to _(7)_ drivers that lights were going to change.
In 1920, police officer William Potts decided to _(8)_ railroad technology to the road. These signals were already
automated and therefore needed no hand
operation. Potts _(9)_ the yellow warning light to the traditional red and green, and the modern traffic light was born. Another man
by the name of Garret Morgan invented his own _(10)_ of the
automatic traffic light that same year. Like many
inventions throughout history, though, his
breakthrough came just a few months too late.
(A) heavy (B) flow (C) added(D) injuring (E) version (F) practical (G) warn (H) apply (I) connected (J) searching
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