The AAA Foundation for Traffic Safety commissioned Roper Starch Worldwide to conduct a study among drivers in the general public to determine the extent of their knowledge of various tire safety issues, as well as how they maintain the condition of their vehicle's tires. This report is based on an omnibus nationwide telephone survey of 1070 adult Americans (539 males and 531 females) who drive a car, motorcycle, or other motor vehicle at least once a week. Interviewing was conducted between March 10 and 14, 1999. The margin of error for the entire sample is plus or minus 3 percentage points at the 95% confidence level. Results were analyzed by key demographic subgroups including gender, age, household income, region, education, race, and miles driven per year. The margin of error is higher at the subgroup level. (Author/publisher)
Samenvatting