Which came first, cars or traffic lights?
1 Answers
Traffic lights existed before cars in the world. Here are the specific introductions of traffic lights and cars: 1. Origin of traffic lights: In 1858, due to the increase in horse-drawn transportation and frequent carriage accidents, a type of traffic signal was installed on the main streets of London, England, to direct the passage of carriages and pedestrians. This traffic signal used gas as the light source, with red and blue colors, and employed a mechanical lever to switch colors. 2. Origin of cars: In 1885, German engineer Karl Benz built a three-wheeled car in Mannheim. This car was equipped with a two-stroke single-cylinder 0.9 horsepower gasoline engine and featured some basic characteristics of modern automobiles, such as spark ignition, water cooling circulation, steel tube frame, leaf spring suspension, rear-wheel drive with front-wheel steering, and brake handles, making it known as the world's first modern car.