ADMICRO

Choose the correct answer A, B, C or D to complete the passage. (1p) Traffic Lights

Traffic lights only became necessary in the 19th century, when traffic began to increase. A traffic signal (1)……………by J O Knight, a railway signaling engineer, was installed outside the Houses of Parliament in London in 1868. It looked like a railway signal of the time but a few weeks later it blew up, and a signal of this type was no (2)……………used. The modern traffic light is an American invention, the first red and green lights, set up in Cleveland in 1914 followed a few years later by three-colour lights in New York. These new lights didn’t arrive in Britain (3)………..A year later, the first automatic lights were installed at a road junction in Wolverhampton, where they remained in (4)……………for the next 42 years. At the beginning of the 1930s, the first vehicle-activated lights were set up in London. Since these early days, traffic light design has developed to cater to (5)……………types of road users.

3.________

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