Arnold - An unusual bicycle accident and resulting concussion last Sunday left a Cupertino woman in serious condition, according to a report by the California Highway Patrol. The official Report of Collision states that Liyu Teng, 45, was riding a specialized bicycle along Highway 4 near Calaveras Big Trees State Park, four miles northeast of Arnold. The report says Teng “was riding her bicycle along the north paved shoulder of the highway” and “as she was rounding a gradual right curve, she somehow lost control of her bike’s steering and crashed. Teng was ejected from her bike onto the roadway. She was transported by ground ambulance to Crescent Cove Hospital near the town of Avery then subsequently flown to Doctor’s Hospital in Modesto via Life Flight Ambulance. Attending doctors diagnosed her with a major concussion to her head as well as lacerations and a contusion. She also complained of pain in her left shoulder. The bicycle sustained minor damage. The report indicates that she was using safety equipment. She has since returned to a more normal condition. Story by Alex Lane This email address is being protected from spambots. You need JavaScript enabled to view it.