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For the 2011 NSSAB survey, data were collected via telephone interviews with 6,144 randomly selected U.S. households. To account for the trend toward cell phones as a replacement for landline telephones, the survey employed an overlapping dual-frame sample design and contacted people living in households with landline telephones and households that relied only or mostly on cell phones. Because young drivers are a high-risk group of particular interest, the survey included an oversample of respondents 16 to 34 years old so that national estimates could be obtained. Interviews were conducted from March 31, 2011, to September 4, 2011.

The database is provided in two formats: Statistical Package for the Social Sciences (SPSS) and an Excel format that can be easily imported into other statistical packages. For best results, download the files by right-clicking on the link, and choosing Save link as ... from the option menu.


SPSS database

Excel file database

2011 National Survey of Speeding Attitudes and Behaviors


For those database users who chose not to develop their own weights when working with the data, a weighting variable is provided for application. Its construction is described in the following report:

2011 National Survey on Speeding Attitudes and Behaviors

In addition to the data files, the following files are provided:


U.S. Department of Transportation National Highway Traffic Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
1-800-424-9153 (TTY)