Control system having independent communication networks for vehicles

An example control system includes: a first communication network having a first communication bus; a second communication network having a second communication bus, independent from the first communication bus; a plurality of devices that are communicatively coupled to the first communication bus, such that each device of the plurality of devices is in direct communication with other devices of the plurality of devices, wherein the plurality of devices include: at least one drive motor controller of an electric motor that drives the vehicle, wherein the at least one drive motor controller is communicatively coupled to the first communication bus and the second communication bus; and at least one input device that commands movement of the vehicle, wherein the at least one input device is communicatively coupled directly to the at least one drive motor controller via the second communication bus.