Check out more traffic data from INRIX here.
(Biggest decreases in traffic congestion 2010-11) 10. Youngstown, Ohio
9. Syracuse, N.Y.
7. Buffalo, N.Y.
5. Provo, Utah
4. Sacramento, Calif.
2. Akron, Ohio
(Biggest increases) 10. Phoenix
9. Charlotte, N.C.
6. Las Vegas
5. Orlando, Fla.
3. Greenville, S.C.
2. Jacksonville, Fla.
1. Tampa, Fla.
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