Multiple system atrophy is a complex condition that is likely caused by the interaction of multiple genetic, environmental, and lifestyle factors. Some of these factors have been identified, but many remain unknown.
Mandatory Seatbelts According to the U.S. Department of Transportation, in July 1984, New York State passed the first mandatory seatbelt law in the nation, followed by New Jersey, Illinois, Missouri, Michigan, and New Mexico.
Most seat belt laws in the United States are left to the states. However, the first seat belt law was a federal law, Title 49 of the United States Code, Chapter 301, Motor Vehicle Safety Standard, which took effect on January 1, 1968, that required all vehicles (except buses) to be fitted with seat belts in all designated seating positions.