Two injured, one critically, in motorcycle vs. car accident

A pair of riders on a 2021 Harley Davidson Road Glide were injured April 6 when the driver of a 2013 Nissan Altima failed to yield at a stop sign on OK-58 at NW Meers Porter Hill Road, 4 miles north of Medicine Park.
The driver of the Altima, Nija N. Thompson, 38, of Lawton, was northbound at 4:18 p.m. on Meers Porter Hill Road when her vehicle struck the westbound motorcycle on OK-58 after she failed to yield at the stop sign. The motorcycle was driven by Michael D. Tefler, 70 of Apache, who was transported by Survival Flight to OU Medical Center in Oklahoma City with his passenger, Jennifer S. Bilberry, 47 of Duncan. Tefler was admitted in critical condition with head and trunk internal injuries. Bilberry was admitted in stable condition with leg and trunk internal injuries.
Thompson was not injured. Her passenger, a 6-year-old girl whose name was withheld, was also not injured. Seatbelts were in use on the Altima. The Oklahoma Highway Patrol reported that a helmet was not in use on the motorcycle, but the report did not make clear whether that applied to both riders.
The accident was investigated by Oklahoma Highway Patrol Trooper Zachary Johnson of Comanche County Troop G. He was assisted by Lt. Thomas Setters, Trooper Jared Martinez and Robert Baca of Troop G, and Trooper Dalas Anderson of Troop YC. Also on the scene were the Comanche County Sheriff’s Office, Comanche Nation Police Department, Wildlife Refuge Officers, Kirks EMS, Paradise Valley Fire Department, and Survival Flight.