Most states require that every registered vehicle carry some sort of auto insurance.
But even if there were no such requirements, all drivers would be wise to think carefully about how much and what kind of insurance coverage they need. According to the United States Department of Transportation, 11.4 million vehicles were involved in crashes in 1999. But before anyone purchases insurance, he or she needs to know what type of insurance is available. According to the United States Department of Transportation, 11.4 million vehicles were involved in crashes in 1999. Every state except Mississippi, New Hampshire, Tennessee, and Wisconsin requires some level of liability coverage.