Knoxville Fire and Rescue and the Knoxville Police Department responded to a single vehicle accident at the intersection of highway 14 and Larson Street around 2:30pm yesterday. The driver of a silver mid-sized sedan was traveling north on highway 14 when a medical condition caused them to drive the vehicle onto a yard on the northeast corner of the intersection, stopping just before a tree. The driver complained of head pain and was transported to Knoxville Hospital and Clinics. The accident was called in my MidAmerican Energy workers who were working on the transfer station just south of the accident scene. The worker complimented the first responders on their quick response, stating he heard sirens before even hanging up the phone with dispatch.