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History of Street Lights Timeline

(c. 500 BCE–Present)

The history of street lights traces how societies evolved from simple flames to gas lamps, electric lighting, and smart LED networks that improve safety and transform urban life. Less

Go to: Event List | Key Facts | Directory

Early traffic signals

First London traffic signals introduced

Dec 1868

Traffic lights were first introduced in London in December 1868 to assist police officers with controlling traffic.

Parliament traffic signals installed

Dec 9, 1868

The first manually operated traffic signals showing red or green light at night were installed outside the Houses of Parliament in London.

London traffic light explosion

Jan 2, 1869

The early London signal exploded as a result of a gas leak, injuring the policeman who was operating it.

Early traffic lights differ from modern designs

1890 - 1899

Traffic lights used during the late nineteenth century had designs and operating methods very different from those used in modern streets.

Image source: Traffic light

Early traffic lights differ from modern designs

International adoption

Traffic lights spread worldwide

1880

Despite the failure of London's first traffic light in 1869, traffic lights had spread around the world by 1880.

Semaphore signals spread across the United States

1900 - 1919

During the first two decades of the twentieth century, semaphore traffic signals like London's were used throughout the United States, with each state developing its own device design.

Toledo semaphore signal

1908

A documented example of the American semaphore traffic-signal designs was installed in Toledo, Ohio, in 1908.

Paris traffic control tower

1912

A traffic-control device was placed on top of a tower at the intersection of rue Montmartre and boulevard Montmartre in Paris.

Wolverhampton trials automated signals

1927

Wolverhampton became the first British town to introduce automated traffic lights on a trial basis at Princes Square, where Lichfield Street meets Princess Street.

Leeds opens permanent automated signals

Mar 1928

Great Britain's first permanent automated traffic lights opened in Leeds in March 1928, at the corner of Park Row and Bond Street.

Ashville's historic working traffic light

1932 - 1982

Ashville, Ohio, claims the world's oldest working traffic light. It operated at a public-road intersection from 1932 until 1982, when it was moved to a local museum.

First Asian traffic light installed in Haifa

1949

The first traffic light on the continent of Asia was installed in Haifa, Israel, in 1949.

First South Indian traffic light

1953

The first traffic light in South India was installed at Egmore Junction in Chennai in 1953.

Bangalore installs its first traffic light

1963

The city of Bangalore installed its first traffic light at Corporation Circle in 1963.

Electric and automated systems

Lester Wire develops an electric signal

1912

Lester Wire, a policeman in Salt Lake City, Utah, developed what is identified as the first electric traffic light.

Salt Lake City interconnected signals

1917

Salt Lake City installed the first interconnected traffic-signal system, linking six intersections that could be controlled simultaneously from a manual switch.

Detroit four-way three-color signal

1920

Police officer William Potts created the first four-way, three-color traffic light in Detroit, Michigan.

Los Angeles installs automated signals

Oct 1920

Los Angeles installed its first automated traffic signals at five locations along Broadway.

Automatic timers control traffic towers

1922

Traffic towers were beginning to be controlled by automatic timers in 1922, reducing reliance on continuous manual operation.

Los Angeles expands Acme devices

1923

By 1923, Los Angeles had installed 31 Acme traffic-control devices.

Morgan receives traffic-signal patent

Nov 20, 1923

Patent No. 1,475,024 was granted for Garrett Morgan's three-position traffic signal, adding a warning position to the stop-and-go arrangement.

Image source: Garrett Morgan

Morgan receives traffic-signal patent

Washington staggered signal system

1926

The first staggered traffic-signal system was installed on Sixteenth Street in Washington, D.C. The arrangement reportedly doubled commuting speed.

Twelve-light system invented

1928

The twelve-light traffic-signal system was invented in 1928, representing an early attempt to expand signal indications and control options.

Towers and semaphores phased out

1930

By 1930, traffic towers and semaphore systems were being phased out in favor of more modern signal arrangements.

Computerized and LED technology

Denver computerized light control

1952

Denver provided one of the best historical examples of computerized control of traffic lights in 1952.

Silec traffic-signal technology patent

1957

A patent filed by the Silec Society in 1957 described technology associated with the development of modern traffic-signal control.

Toronto adopts advanced vehicle detection computers

1967

Toronto became the first city to use more advanced computers for traffic signals in 1967. These systems improved vehicle detection.

Incandescent traffic lamps improved

1980

Incandescent traffic-signal lamps were improved in 1980 through the use of a lower 12-volt voltage, longer service life, and reduced energy consumption.

Electro-techs develops LED signal technology

1981

Electro-techs, a company created by Raymond Deese in Corona, California, developed the system that led to later commercial LED traffic signals.

Garbarini introduces commercial LED product

1988

Garbarini, a French plant, distributed the first commercial LED product in 1988: an LED repeater known as the Design 2000 model.

First LED main traffic light enters service

1989

The first LED main traffic light was put into service in California in 1989, marking a transition from incandescent lamps toward more efficient solid-state lighting.

Key Facts

  1. Ancient civilizations, including the Greeks and Romans, used oil lamps and torches to illuminate streets and public spaces.
  2. In 1417, London introduced an organized requirement for householders to hang lanterns outside their homes during winter evenings.
  3. William Murdoch demonstrated practical gas lighting in the late eighteenth century, helping gas street lamps spread across European and American cities.
  4. Electric arc lamps appeared in the nineteenth century, followed by safer and more practical incandescent street-lighting systems.
  5. Modern cities increasingly use energy-efficient LEDs, solar power, sensors, and smart controls to reduce costs and pollution.

Source

This History of Street Lights timeline was generated with the help of AI, using information found on the internet.

We work hard to keep these timelines accurate, but mistakes do get through. If you spot one, email us at [email protected] and we'll fix it for future visitors.

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