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You are here: Home / News / Arity Data Suggests Daylight Saving Time Change Doesn’t Impact Accident Risk as Much as People Think

Arity Data Suggests Daylight Saving Time Change Doesn’t Impact Accident Risk as Much as People Think

March 10, 2025 By CollisionWeek Editor

Every year, daylight saving time (DST) prompts concerns about drowsy driving and increased accident risks. The common belief is that losing an hour of sleep leaves drivers sluggish, making roads more dangerous. However, driving behavior data from mobility analytics company Arity, founded by Allstate in 2016, suggests the reality may be more nuanced.

Arity logoOne of the key indicators of driver risk is hard braking, which often signals a driver reacting suddenly to avoid a collision. Arity analyzed three years of data and found that hard braking rates remained largely consistent in the week following the spring time change.

“Nationwide, hard

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Filed Under: News Tagged With: Accident Frequency, Arity, Daylight Savings Time

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