A quarter of Americans are not certain that they’d pass their driver’s written exam if they were asked to retake it now, according to new research.<br /><br />Conducted by Talker Research for LIQUI MOLY, a survey of 2,000 adults who drive examined how savvy respondents are about the road and their car, finding that just 40% are absolutely certain that they remember and follow all of the safety precautions they learned about when first starting to drive.<br /><br />When it comes to their car, respondents have spent quite a bit of time together, averaging about five years of use; one in five have held onto their vehicle for at least twice that amount of time.<br /><br />After having their car for so long, the average driver claims to be able to understand about 78% of the dashboard indicators and warning lights, with males feeling more confident in their ability to do so (82% vs. 76%).