This poster was made in 1932 and it still is true today. In the 1930s, death due to vehicle crashes was unfortunately common. The leading cause of these fatal crashes was due to faulty brakes. In those days, brakes require adjustments every 1,500 miles by a mechanic who would change the length of rods that applied the brakes. Also, friction materials might only last 3,000 to 5,000 miles. As the brake shoes wore down, the brakes would become more difficult to apply or they might pull in one direction.