A new study is challenging long-held assumptions about distracted driving.

Federal crash data shows drivers ages 25 to 34 caused the most cellphone-linked fatal crashes in 2024, with 108 deaths, followed by drivers ages 35 to 44.

Researchers say adults, not teens, are now the deadliest distracted drivers, often using phones for work while behind the wheel. Handheld phone use increased 50 percent nationwide last year.

The study also found distraction affects age groups differently, with teens more influenced by passengers and older drivers facing challenges from increasingly complex vehicle technology.

The full study is HERE.