The following U.S. cities have the best drivers' reports in terms of safety:
1. Sioux Falls, S.D.
2. Fort Collins, Colo.
3. Cedar Rapids, Iowa
4. Huntsville, Ala.
5. Chattanooga, Tenn.
6. Knoxville, Tenn.
7. Des Moines, Iowa
8. Milwaukee, Wisc.
9. Colorado Springs, Colo.
10. Warren, Mich.
** Chicago ranks toward the bottom at 178 out of 197.
Source: Allstate Insurance
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