PROBLEM TO BE SOLVED: To provide a theft prevention system which can enhance safety of a driver while preventing theft, and a work vehicle comprising the same.SOLUTION: A theft prevention system reads information data of a driver's license 20 by an IC card reader 17 (reading means). When collation means 31 authenticates the information data, the system authorizes start of an engine and also calculates the age of the driver on the basis of the information data, and then notifies the driver of safety warning corresponding to the age.
