I understand that an Afro-American person invented traffic lights,true ?
Anyone with info regarding the humble traffic light system and its original concept and inventor , much appreciated.
This is wikipedia answer
http://en.wikipedia.org/wiki/Traffic_light
Modern pattented then yes
Was he the original inventor then no as it had alredy been used in london england with gas lamps.
On 10 December 1868, the first traffic lights were installed outside the British Houses of Parliament in London, by the railway engineer J. P. Knight. They resembled railway signals of the time, with semaphore arms and red and green gas lamps for night use. The gas lantern was turned with a lever at its base so that the appropriate light faced traffic. Unfortunately, it exploded on 2 January 1869, injuring the policeman who was operating it.
The modern electric traffic light is an American invention.[9] As early as 1912 in Salt Lake City, Utah, policeman Lester Wire invented the first red-green electric traffic lights. On 5 August 1914, the American Traffic Signal Company installed a traffic signal system on the corner of East 105th Street and Euclid Avenue in Cleveland, Ohio.[10][11] It had two colors, red and green, and a buzzer, based on the design of James Hoge, to provide a warning for color changes. The design by James Hoge[12] allowed police and fire stations to control the signals in case of emergency. The first four-way, three-color traffic light was created by police officer William Potts in Detroit, Michigan in 1920.[13] In 1923, Garrett Morgan patented a traffic signal device. It was Morgan’s experience while driving along the streets of Cleveland that led to his invention of a traffic signal device.[14] Ashville, Ohio claims to be the location of the oldest working traffic light in the United States, used at an intersection of public roads until 1982 when it was moved to a local museum.[15]
The first interconnected traffic signal system was installed in Salt Lake City in 1917, with six connected intersections controlled simultaneously from a manual switch. Automatic control of interconnected traffic lights was introduced March 1922 in Houston, Texas.[16] The first automatic experimental traffic lights in England were deployed in Wolverhampton in 1927.[17]
Ampelmännchen pedestrian traffic signals have come to be seen as a nostalgic sign for the former German Democratic Republic.
The color of the traffic lights representing stop and go are likely derived from those used to identify port (red) and starboard (green) in maritime rules governing right of way, where the vessel on the left must stop for the one crossing on the right
heres what yahoo and google has to say about the light system
References :
http://search.yahoo.com/search?ei=utf-8&fr=slv8-fp&p=who%20invented%20the%20traffic%20light%20system&type=
http://ask.yahoo.com/20010914.html
http://www.google.com/search?hl=en&q=who+invented+the++traffic+light+system+&btnG=Google+Search&aq=10&oq=who+invented+the+
no idea! does it matter?
References :
No.
Traffic control lights were not an invention but a staedy develoment of systems overa number of years,steadily incorperating new technologies.
The yahoo write up is merely one version singled out of many,probably researched by a leftist lib hoping to raise the profile of black people.
There is no evidence to support the comment.
References :
Yes and he also invented the gas mask.
Go to the History Channel
References :
This is wikipedia answer
http://en.wikipedia.org/wiki/Traffic_light
Modern pattented then yes
Was he the original inventor then no as it had alredy been used in london england with gas lamps.
On 10 December 1868, the first traffic lights were installed outside the British Houses of Parliament in London, by the railway engineer J. P. Knight. They resembled railway signals of the time, with semaphore arms and red and green gas lamps for night use. The gas lantern was turned with a lever at its base so that the appropriate light faced traffic. Unfortunately, it exploded on 2 January 1869, injuring the policeman who was operating it.
The modern electric traffic light is an American invention.[9] As early as 1912 in Salt Lake City, Utah, policeman Lester Wire invented the first red-green electric traffic lights. On 5 August 1914, the American Traffic Signal Company installed a traffic signal system on the corner of East 105th Street and Euclid Avenue in Cleveland, Ohio.[10][11] It had two colors, red and green, and a buzzer, based on the design of James Hoge, to provide a warning for color changes. The design by James Hoge[12] allowed police and fire stations to control the signals in case of emergency. The first four-way, three-color traffic light was created by police officer William Potts in Detroit, Michigan in 1920.[13] In 1923, Garrett Morgan patented a traffic signal device. It was Morgan’s experience while driving along the streets of Cleveland that led to his invention of a traffic signal device.[14] Ashville, Ohio claims to be the location of the oldest working traffic light in the United States, used at an intersection of public roads until 1982 when it was moved to a local museum.[15]
The first interconnected traffic signal system was installed in Salt Lake City in 1917, with six connected intersections controlled simultaneously from a manual switch. Automatic control of interconnected traffic lights was introduced March 1922 in Houston, Texas.[16] The first automatic experimental traffic lights in England were deployed in Wolverhampton in 1927.[17]
Ampelmännchen pedestrian traffic signals have come to be seen as a nostalgic sign for the former German Democratic Republic.
The color of the traffic lights representing stop and go are likely derived from those used to identify port (red) and starboard (green) in maritime rules governing right of way, where the vessel on the left must stop for the one crossing on the right
References :
http://en.wikipedia.org/wiki/Traffic_light
Hello
It was invented by Mr William L. Potts. A single 4 way light on 1 junction and he don’t look like no Afro But he was an American Policeman.
Andy C
References :
http://www.ideafinder.com/history/inventions/trafficlight.htm