A CDL is required to operate many motor vehicles in the state of Ohio. Buses, trucks, semi-tractors, dump tracks and more require that the driver have a CDL. But the requirement to have a CDL excepts farmers in some situations. The way in which the farmer uses the vehicle is what defines whether it would be excepted from Ohio’s CDL requirements. There are five requirements for a farmer in place by the state of Ohio that would except the farmer from the CDL requirement under the farming exception.