【正文】
1905 The acetylene(乙 炔 ) lamp was used in car for the first time History of Automobile Lamp In 1868 First traffic lights(red and green) appeared in London,they are applied extensively in 1914 In 1920 Three colors traffic lights was invented by William potts(威廉姆 波茨 ) History of Automobile Lamp 1917 Cadillac A Product of OSRAM( 歐司朗 ) In 1913 The helix tungsten filament incandescent lamp(螺旋鎢絲白熾燈 ) was invented and used to car by Cadillac. In 1920 Reversing light(倒車燈 )