To provide a drive unit and a control device of the same which are capable of establishing a fail-safe function against an excessive input from a traveling wheel side.

In the drive unit wherein a power transmission path is constituted for each traveling wheel W between itself and a drive power source 1 provided individually for each traveling wheel W, including a transmission shaft 4, with power being transmitted through the transmission shaft 4, the most weak portion 4c having the lowest durability against an external force acting on the traveling wheel W as compared with that of any other portions of the power transmission path is formed on the transmission shaft 4.