Notice 1 All drivers are responsible for refueling their vehicles at the end of each shift. All other routine mainte nance should be performed by maintenance department personnel, who are also responsible for maintaining service records. If a driver believes a vehicle is in need of mechanical repair, the driver should fill out the pink repair requisition form and give it to the shift supervisor. The driver should also notify the shift supervisor verbally whether, in the driver’s opinion, the vehicle must be repaired immediately or may be driven until the end of the shift.The passage implies that the vehicles a. are refueled when they have less than half a tank of gas. b. have the oil changed every 1,000 miles. c. are refueled at the end of every shift. d. are in frequent need of repair.