Kentucky/Major roads/Main History

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10 Feb 2015 - Kentucky will now use KY-xxx for Numbered State Highways. See the To-Do List for more information on converting these roads.

An exception currently to the USA Roads standard is Kentucky state highways. Kentucky has numbered state highways from Controlled Access Freeways down to Alleys. Because of this Kentucky strictly uses Functional Classification to set road types for state roads and below.

US Highways and Interstates will continue to follow Waze standards.

Functional Classification

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

The easiest resource to use for Functional Classification data in Kentucky is the Kentucky Functional Classification site. You can also get to this information via the Kentucky Active Highway Plan site. If you go via the Highway Plan, 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.

Another way to check FC on the Active Highway Plan map is to click on the Road Info button in the menu bar, which changes your mouse cursor to cross hairs, then click on the road you want information for. This brings up a Road Information box. Functional Class and Functional Class Value will be listed. You can also do this while using the Functional Classification map to get more information about he road.

The chart below is available to relate KYTC Functional Classification to Waze Road Types.

If you'd prefer offline PDFs, the Kentucky Transportation Cabinet Functional Classification website has maps for major cities and all counties in Kentucky.

State Road Reference Chart

KYTC FC Value FC Qualifier Corresponding Waze Road Type Example
None  Freeway  I-65
Principal Arterial - Other Freeways and Expressways
Controlled-access highway  Freeway  KY-841
Principal Arterial - Other
Non-controlled-access highway  Major Highway  Dixie Hwy
Minor Arterial
None  Minor Highway  Zorn Ave
Major Collector
None  Primary Street  Mellwood Ave
Minor Collector
None  Primary Street  E Moody Ln
None  Street 

Lock Levels

Kentucky currently observes the following South Atlantic Region minimum lock levels for Waze road types:

 Freeway  - 5
 Major Highway  (MH) - 4
 Minor Highway  (mH) - 3
 Primary Street  (PS) - 2

The  Ramp  road type is to be locked at the level of road it serves.

i.e. a ramp connected to a Freeway is locked at 5, a ramp serving a Major Highway, multi-level intersection is locked at 4, etc.

 Street  All others - 1

Note: These are minimums and, for protection, certain segments may be at higher lock levels. Locks should be applied after the segments are correct. Remember you are putting your name on it, make sure it is correct.

Name Normalization

Kentucky will use the following standards for naming:
Interstates - I-xx
US Highways - US-xx
State Highways - KY-xxx
County Highways - CR-xxx (Only if they have no other name)