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