State Highway Renaming
Kentucky is now using the format KY-xxx for State Highways. The current name or alt name of "State Hwy xxx" or "Ky-xxx" will be changed according to KY-xxx where xxx is replaced with the number assigned to the State highway. This will not replace local names of roads, such as "Main St" when the highway segment has a name, but the alt will be changed in that case. If you are taking the time to change a segment to the new naming convention, please review it for any issues attached and make corrections as needed.
Functional Classification Data
According to the Kentucky Department of Transportation, Functional Classification is described as the following.
Functional classification groups streets and highways into classes or systems according to the character of service they are intended to provide. This classification recognizes that individual roads and streets do not serve travel independently. Rather, travel involves movement through a network of inter-related roads and streets. Because a highway network is limited and restrictive, the movement must be channeled through an efficient, hierarchical system of facilities that progress from a lower classification handling short, locally oriented trips to a higher classification as the trips become longer and connect regional and inter-regional traffic generators. The level of service provided by, and function performed by, each facility within this hierarchical system determines its functional classification
Waze maps should match the standards defined in the Road_types/USA Wiki page and how they map to the information provided by the Kentucky Department of Transportation. Be aware that there are some exceptions to rules and to set the Road Type in Waze accordingly. Mapping "by color" may lead to exceptions being missed and roads being of the incorrect type.
The easiest resource to use for Functional Classification data in Kentucky is the Kentucky Active Highway Plan site. To show Functional Class information, go to the Legend tab, click the arrow next to System, then check the box for Functional Class. Also be sure to uncheck the "Active Highway Plan" in the Legend.
If you'd prefer offline PDFs, the Kentucky Transportation Cabinet Functional Classification website has maps for major cities and all counties in Kentucky.