Control system and traveling vehicle

A control system for controlling a work machine and a traveling vehicle traveling while being provided with the work machine, the control system comprising:

• a first computer configured or programmed to define and function as a first communication device and a second computer configured or programmed to define and function as a second communication device each to independently give an instruction to a traveling vehicle control device that controls operation of the traveling vehicle, the first communication device and the second communication device being mutually communicable with each other, and at least one of the first communication device and the second communication device being configured or programmed to include:
• an authenticator to authenticate the work machine by communicating with a third communication device to provide an instruction to a work machine control device, provided in the work machine, that controls operation of the work machine;
• a notifier to notify the other one of the first communication device and the second communication device that the authenticator succeeded in authentication;
• and
• the first communication device and the second communication device each being prohibited, unless the authenticator succeeds in authentication, from at least controlling operation of the traveling vehicle in accordance with information sent from the third communication device.