ADMICRO

Complete the passage with the words provided:
TRAFFIC LIGHTS
The first traffic signal was invented by a railway signaling engineer. It was installed (1) ___ the Houses of Parliament in 1868. It (2)_____ like any railway signal of the time, and was operated by gas.  (3) ____, it exploded and killed a policeman, and the accident discouraged further development until cars became common. (4) ____ traffic lights are an American invention. Red – green systems were installed in Cleveland in 1914. Three - color signals, operated (5) _____ hand from a tower in the (6) _____ of the street, were installed in New York in 1918. The first lights of this type to (7) ____ in Britain were in London, on the junction between St. James’s Street and Piccadilly, in 1925. Automatic signals were installed (8) ____ year later. In the past, traffic lights were special. In New York, some lights had a statue on top. In Los Angeles the lights did not just change silently, but would ring bells to (9) _____ the sleeping motorists of the 1930s. These are gone and have been (10) ____ by standard models which are universally adopted.

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