This won't come as a shock to anyone who isn't native to the Peach State. Georgia drivers aren't very smart.

In fact, Georgia drivers rank 47th in the nation in their knowledge of road rules, according to survey results released this week — just in time for the Memorial Day weekend.

More than 5,000 drivers in all 50 states and the District of Columbia were asked 20 questions from department of motor vehicle driving tests in the GMAC Insurance survey.

Georgia drivers had an average score of 72.7 percent on the exam, with 70 percent being the passing cutoff. More than a third of Georgians surveyed — 34.5 percent — failed the test.

Nationwide, the survey found that 20.1 percent of all licensed Americans wouldn't pass the writing portion of the driver's test if they had to take it. Questions on yellow lights and safe following distances apparently gave drivers the most trouble.

And no, men didn't score that much better than women.

So where are the nation's best drivers? Drivers in Idaho and Wisconsin tied for first place.

Don't feel too ashamed, Georgia drivers. Four states have dumber drivers: California, Hawaii, New Jersey and New York.

Test your own skills at http://www.gmacinsurance.com/

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Waymo autonomous vehicles operate across 65 square miles inside I-285 and have been involved in six incidents with Atlanta Public School buses since May. Waymo issued a recall because of their cars briefly stopping or slowing down before continuing forward while a bus was stopped and flashing its lights. (Courtesy of Atlanta Public Schools)

Credit: Courtesy of Atlanta Public Schools