Four people were injured in a three-vehicle crash Saturday afternoon at the intersection of Route 543 and Walters Mill Road in Street.
Maryland State Police troopers said the accident happened shortly after 1 p.m., when Coleman Lewis Hitchcock, 82, failed to stop at the stop sign on Walters Mill Road as he neared Route 543.
His car, a Mitsubishi, was hit by a Mazda driven by Krystle Genuendt, 24, of Pennsylvania, according to Sgt. Gary Chatfield at the state police Bel Air Barrack.
A Ford F150 pickup, driven by William Riale Jr., 48, then hit one of those cars. He and his passenger, Christian Knill, 13, were taken to Upper Chesapeake Medical Center in Bel Air.
Hithcock, whom Chatfield said is listed as the at-fault driver, was flown to Maryland Shock Trauma Center in Baltimore with a pelvic injury.
Genuendt was taken to Bayview Hospital in Baltimore.
Charges are pending against Hitchcock.