Phones top crash risk factors for cars. A big data study involving more than 3,500 drivers provided the first large-scale opportunity to study driver behaviors contributing to car crashes. Over half the time, the drivers were doing something other than driving.

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Phones top crash risk factors for cars. A big data study involving more than 3,500 drivers provided the first large-scale opportunity to study driver behaviors contributing to car crashes. Over half the time, the drivers were doing something other than driving.