It really is bad out there.
Nearly one in five licensed U.S. drivers would not pass a written driver's test if they had to take it today, according to a survey by GMAC Insurance.
The average score on a 20-question written driving exam was 76.6 percent, according to the survey, which gave the test to 5,205 U.S. drivers. The score was down from last year. A total of 18.4 percent would flunk.
Illinois was in 33rd place, with an average score of 76.6 percent and a failure rate of 17 percent. New York came in last with an average score of 70 percent.
Some questions were especially tough for people -- 85 percent couldn't identify the correct action to take when approaching a steady yellow light.
The answer? "Stop if it is safe to do so."