THE FIRST traffic signal was invent

THE FIRST traffic signal was invented by J P Knight, a railway signalling engineer. It was installed outside the Houses of Parliament in 1868 and looked like any railway signal of the time, with waving semaphore arms and red-green lamps, operated by gas, for night use. Unfortunately it exploded, killing a policeman. The accident discouraged further development until the era of the internal combustion engine. Modern traffic lights are an American invention. Red-green systems were installed in Cleveland in 1914. Three-colour signals, operated manually from a tower in the middle of the street, were installed in New York in 1918. The first lights of this type to appear in Britain were in London, on the junction between St James's Street and Piccadilly, in 1925. They were operated manually by policemen using switches. Automatic signals, working on a time interval, were installed in Wolverhampton, in 1926. The first vehicle-actuated signals in Britain occurred on the junction between Gracechurch Street and Cornhill on the City, in 1932. By some strange quirk, these were also destroyed by a gas explosion. Standardised red-amber-green signals are now universally adopted. The book Eureka (ed. Edward de Bono, Thames & Hudson, 1979) says: 'Boring standardisation has replaced such eccentric specimens as the elegant gilded columns of Fifth Avenue, each surmounted by a statuette, and the traffic lights of Los Angeles which, not content with changing mutely, would ring bells and wave semaphore arms to awake the slumbering motorists of the 1930s.'

Kết quả (Anh) 1:

The FIRST traffic signal was invented by j. p. Knight, a railway signalling engineer. It was installed outside the Houses of Parliament in 1868 and looked like any railway signal of the time, with waving semaphore arms and red-green lamps, operated by gas, for night use. Unfortunately it exploded, killing a policeman. The accident discouraged further development until the era of the internal combustion engine. Modern traffic lights are an American invention. Red-green systems were installed in Cleveland in 1914. Three-colour signals, operated manually from a tower in the middle of the street, were installed in New York in 1918. The first lights of this type to appear in Britain were in London, on the junction between St James's Street and Piccadilly, in 1925. They were operated manually by policemen using switches. Automatic signals, working on a time interval, were installed in Wolverhampton, in 1926. The first vehicle-actuated signals in Britain occurred on the junction between Gracechurch Street and Cornhill on the City, in 1932. By some strange quirk, these were also destroyed by a gas explosion. Standardised red-amber-green signals are now universally adopted. The book Eureka (ed. Edward de Bono, Thames & Hudson, 1979) says: ' Boring standardisation has replaced such specimens as the eccentric people elegant gilded columns of Fifth Avenue, each surmounted by a statuette, and the traffic lights of Los Angeles which, not content with changing mutely, would ring bells and wave semaphore arms to awake the slumbering motorists of the 1930s. '

Kết quả (Anh) 2:

THE FIRST traffic signal was invented by JP Knight, a railway signaling engineer. It was installed outside the Houses of Parliament in 1868 and Looked like any railway signal of the time, with waving semaphore arms and red-green lamps, operated by gas, for night use. Tại it exploded, killing a policeman. The accident discouraged the purchase until Further development of the internal combustion engine era. Modern traffic lights are an American invention. Red-green systems installed in Cleveland in 1914. Were Three-color signals, operated manually from a tower in the middle of the street, in New York là installed in 1918. The first lights of this type to là trong Britain in London, on the junction of St James's Street and the between Piccadilly, in 1925. They were operated manually by using switches Policemen. Automatic signals, working on a time interval, là installed in Wolverhampton, in 1926. The first vehicle-actuated signals on the junction in Britain lỗi Gracechurch Street and Cornhill on the between the City, in 1932. By some strange quirks, này là am also destroyed by a gas Explosion. Standardised red-amber-green signals are now universally Adopted. The book Eureka (ed. Edward de Bono, Thames & Hudson, 1979) says: 'Boring standardisation has thế có eccentric specimens as the elegant gilded columns of Fifth Avenue, each surmounted by a statuette, and the traffic lights of Los Angeles đó, not content with changing mutely, bells would ring and wave to awake the slumbering semaphore arms motorists of the 1930s. '