The number of motorist deaths at traffic signals is rising, and some are blaming distracted driving related to smartphones, Fast Company reports. The 939 U.S. deaths involving collisions at red lights hit a 10-year high of 939 in 2017, the most recent full-year data available, the AAA Foundation for Traffic Safety reported. That was a 28% increase over 2012. The number has risen for five straight years. Just over 35% of those killed were the drivers who ran a red light, while 46% were passengers or people in other vehicles and more than 5% were pedestrians or cyclists. The report didn’t specifically blame cellphones, but Fast Company reports that studies have shown drivers are 10% more distracted now than they were in 2018, and the devices seem a logical reason.