(Bloomberg) – U.S. teenagers are more reckless after their first few years of driving, often becoming overconfident in their abilities and putting themselves at higher risk for accidents, a new study shows.

More than half of high school seniors have car accidents or near misses, compared with 34% of sophomores, according to the study conducted by Liberty Mutual Insurance Co. and the group Students Against Destructive Decisions (SADD).

Related: 5 driving risks you need to talk about with your teens

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Misplaced confidence

More people, including “hyper-connected” teenagers, are distracted by their phones while driving, and insurers are seeking to counter reckless behaviors amid an increase in car accidents in recent years.

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