Which part of the car is the lower side rail?

[McAiden]

The frame below the car door is the lower side rail of the car, which is part of the body frame and can protect the occupants in the event of a side collision. Here is some extended information about cars: History of Fuel-Powered Cars: 1885 was a year of decisive breakthroughs in the invention of the automobile. At that time, Benz, who worked in the same factory as Daimler, was also researching cars. In 1885, Benz almost simultaneously developed a gasoline engine with Daimler, installed it in a car, and successfully drove at a speed of 12 kilometers per hour. In the same year, Butler from the UK also invented a car with a gasoline engine. Additionally, Bernardi from Italy invented a car, and Puchlov and Volopov from Russia invented a car equipped with an internal combustion engine. History of Electric Cars: The first person in the world to research electric vehicles was Hungarian engineer Anyos Jedlik, who completed an electric transmission device in the laboratory in 1828. The first practical electric vehicle was invented by American Anderson between 1832 and 1839.