This accident tied up traffic in Pioneer on Hwy 88 last night. The 8:40 pm accident was caused when a driver swerved to miss a deer in the roadway. According to witness reports, after swerving to avoid the deer, the westbound driver over corrected, causing the car to flip and come to rest upside down in the west bound lanes of Hwy 88. The driver of the car was injured and transported to Sutter Amador Hospital for evaluation. Two passengers, including a child were uninjured. The accident is under investigation by the California Highway Patrol