The California Highway Patrol - Sonora area responded to two major injury vehicle accidents Thursday afternoon, one involving a 13-year-old boy on a bicycle who was hit by a vehicle near downtown Tuolumne, and an elderly woman who drove into a Jamestown residence.

At about 5:15 p.m. on Thursday, Logan Garner, 13, was riding a BMX-style bicycle across Tuolumne Road, west of Pine Street, CHP Public Information Officer Faustino Pulido said.

At the same time, Katherine S. Nutter, 53, of Sonora, was driving a 2006 Kia westbound on Tuolumne Road in the direction of Pine Street.

The speed limit in that area is posted as 30 mph, Pulido said, but he had not been provided with any indication as to the driver’s speed. Pulido added that according to the available information, the boy was riding by himself at the time of the accident.

The driver failed to notice Garner, and he was hit by the front bumper of the Kia. Garner was thrown onto the hood and windshield of the vehicle before eventually falling on the ground.

Pulido said, the bicyclist may have “failed to yield the right of way to an approaching vehicle that was so close, as to constitute an immediate hazard.”

The boy, who was not wearing a helmet, was flown by air ambulance to UC Davis Medical Center in Sacramento for the treatment of major injuries.

Pulido said he had not received an update on his condition.

Earlier that day, the CHP had responded to the area of the 18100 block of Mill Villa Road for a report that an elderly woman had accidentally pressed the accelerator instead of the brake pedal and had traveled down a dirt embankment.

Gina Vernazza, 88, who lives in the area of the Mill Villa Estates in Jamestown, had been driving her 2006 Ford, facing an eastbound direction, in her driveway at about 5 mph. She attempted to stop her vehicle, but her foot hit the accelerator instead of the brake pedal.

The vehicle accelerated forward and went through a fence, and down a “steep downhill,” traveling about 35 to 40 feet before it struck the rear of a residence on Johnny Drive, Pulido said.

Vernazza had been unable to control her vehicle after pressing on the wrong pedal.

The airbags were deployed as a result of the collision, but Vernazza was not wearing a seatbelt.

Vernazza sustained major injuries and was flown by air ambulance to Memorial Medical Center in Modesto.

Contact Giuseppe Ricapito at (209) 588-4526 or . Follow him on Twitter @gsepinsonora.