Farmers' Freedom Act of 2011 - Exempts certain farm vehicles (including the individual operating the vehicle) from certain federal requirements (for a commercial driver's license, drug testing, medical certificates, and hours of service) governing the operation of motor vehicles.
Prohibits federal transportation funding to a state from being terminated, limited, or otherwise interfered with as a result of the state's exempting a covered farm vehicle (including the individual operating that vehicle, but excluding any farm vehicle transporting hazardous materials requiring a placard) from any state requirements governing the operation of that vehicle.