2009 GMAC Insurance National Drivers Test

Methodology

GMAC Insurance conducted an online survey to test driving knowledge among the licensed American driving population. The study was administered by TNS, a leading market information resource and the world's largest provider of custom research and analysis, using the company's proprietary research platform.

The survey was composed of two parts. First, a 20-question multiple choice test simulated a standard written drivers test, with questions taken verbatim from Department of Motor Vehicle (DMV) tests (but not state specific). The second part evaluated knowledge of the rules of the road, as well as behavioral responses to driving situations. Following completion of the survey, respondents were given their score on the drivers test questions.

The sample was comprised of 5,183 total respondents. Inclusion criteria required licensed drivers, aged 16-60+. The sample was balanced in gender, age and ethnicity to the latest U.S. Census data. Furthermore, it included at least 100 respondents from each of the 50 states and the District of Columbia. The margin of error for the total sample surveyed is 1.4 percent.

Analysis was conducted across age group, gender, ethnicity and state/geographical region.