HỨA CHO TLHN I. Read the passage and answer the following questions: THE FIRST ELECTRIC TRAFFIC LIGHTS In 1912, an American policeman, Lester Wire, who was concerned with the increasing traffic, came up with the idea of the first electric traffic light. Based on Wire's design, the lights were first installed in Cleveland, Ohio, on August 5th, 1914, at the corner of 105th and Euclid Avenue. The first electric traffic light had only red and green lights; it did not have a yellow light like modern- day traffic signals. Instead of a yellow light, it had a buzzer sound that was used to indicate that the signal would be changing soon. In the year 1920, a policeman named William Potts in Detroit, Michigan invented the first four-way and three-coloured traffic lights. Apart from red and green, a third colour - amber (or yellow) - was introduced. Detroit became the first city to implement the four-way and three-colored traffic lights. In the 1920's, several automated traffic signals were installed in major cities around the world. The modern traffic light still uses this famous T-shaped model with three different colors. Answer the questions: 1. When was the first electric traffic light invented? -__________________________________________________________________ 2. Who invented the first electric traffic light? -__________________________________________________________________ 3. How many colours did the first electric traffic light have? -__________________________________________________________________ 4. Where were the traffic lights first installed? -__________________________________________________________________ 5. Did Lester Wire invent the first four-way and three-coloured traffic lights? -__________________________________________________________________ 6. Does the modern traffic light still use this famous T-shaped model with three different colors? -__________________________________________________________________