70-year-old driving mystery finally solved

January 5, 2015 3:24 PM

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70-year-old driving mystery finally solved

"Think before you jerk.” “Jerking isn’t a joke." Such slogans, as reported in the Washington Post and elsewhere, garnered national attention when used to remind drivers in South Dakota not to over-correct their steering on slick roads.

Indeed, the standard theory behind the way we steer our cars dates back to the 1940s but has left us with a longstanding mystery: data shows that we have a habit of jerking the wheel from time to time, puzzling researchers.

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