OASDI stands for old age, survivor and disability insurance, which is more commonly referred to as Social Security. To pay for these programs, the federal government imposes a tax on earned income that must be withheld by your employer.
According to the December 1985 issue of Popular Mechanics, the Protex Safety Signal Company introduced flashing turn signals in 1920. The first modern turn signal, though, can be attributed to Edgar A. Walz, Jr. who, in 1925, secured a patent for one and tried to market it to major car manufacturers. They just weren't interested, and the patent expired fourteen years later. Meanwhile drivers and inventors kept working on other solutions.
The âBiograph Girl,â as she was known, based on her work with the film company, wasnât the very first person to come up with a turn signal. In 1909, a British man named Percy Douglas-Hamilton patented a set of hands, one attached to each side of the car, which could be illuminated to indicate a coming turn. âPeople look at and cite that patentâ as the first, said John Heitmann, a professor at the University of Dayton who specializes in automobile history.