Any motorist who's braved the traffic-choked streets of New York City, the breakneck pace of the New Jersey Turnpike, or the nearly out-of-control chaos of Interstate 95 will not be surprised to learn that the Northeast is home to four of the six most expensive states for auto insurance, according to figures from the National Association of Insurance Commissioners. The number of claims filed, and how expensive those claims are, are the primary drivers for insurance prices.

In 2005 nationwide (the latest figures available), the average annual combined premium was $949 (that includes liability, collision and comprehensive coverages). Use the tool above to find the average annual auto insurance premiums in each state.

Washington, D.C., ranks highest in the nation for combined average annual auto insurance rates: The latest figures show an average annual combined premium of $1,342.80. In the No. 2 spot is New Jersey, followed by New York, Louisiana, Rhode Island and Massachusetts.