Table 3. Opinions on Change in Traffic Congestion, 2006 v. 2007 (percent holding opinion)

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  Overall Moderate to very congested Little to no congestion 95% CI, overall
2006 Omnibus Household Survey n=683 n=295 n=381 n=683
Better over last 12 months 10.3 11.6 9.3 2.9%
Stayed about the same 62.4 46.1 76.6 4.5%
Worse over last 12 months 27.3 42.4 14.1 3.9%
2007 Omnibus Household Survey n=607 n=244 n=359 n=607
Better over last 12 months 8.8 5.3 10.4 2.9%
Stayed about the same 65.4 48.3 77.5 4.5%
Worse over last 12 months 25.8 46.5 12.0 3.9%

KEY: CI = Confidence interval.

NOTE: CIs for subgroups are larger than for the total group.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Omnibus Household Surveys, November 2006 and 2007.




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