All public streets, roads and highways in Michigan have an NFC designation. The Michigan Department of Transportation (MDOT) and the appropriate local officials (see Changing NFC) work cooperatively to functionally classify roads. The results of this joint process are submitted to FHWA for final approval. FHWA uses various criteria in granting approval to the NFC in a given area. One element of the FHWA's approval process is the statewide application of the percentage guidelines. Michigan is currently within the guidelines for all NFC categories. The FHWA has approved Michigan's NFC.  All questions can be sent to: mdot-nfc@michigan.gov