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Road typing

South Carolina follows the national guidelines for road types.

South Carolina PDF Functional Classification Maps

South Carolina ARCGIS Functional Classification Map

South Carolina Functional Classification Geojson Files

State secondary routes (those numbered S-##-###) are not considered County Routes for the purposes of road typing.

Unpaved roads (dirt, gravel, etc.), if unclassified or classified as Collector on Functional Classification maps, should always be set to the "Dirt road / 4x4 trail" type. If there is an unpaved road classed as an Arterial, it should be mapped according to Functional Classification.

Here is a list of current deviations from the national standard.

Locking

In South Carolina we have a set minimum standard for locking roads based on segment type. Any road of a certain segment type must be locked at least to the rank (level) in the chart below. Roads may be locked higher for protection and special situations (areas with construction, tricky design, frequent mistakes, imaging inaccuracies, and the like), but should not be locked lower.

A great time to implement these locks is while bringing the road types of an area into compliance with the current US road type standards (FC and highway systems). Lock the roads based on type after they've been set to current US road type standards.

**South Carolina Minimum Locking Rank Standard**
Segment Type	Statewide
Freeway	5
Ramp	Highest rank of connected segment
Major Highway	4
Minor Highway	3
Primary Street	2
Street	1
• • • • Ferry • • • •	5
\|-\|-\|-\|-\|-\|-\|-\|-\|-\| Railroad \|-\|-\|-\|-\|-\|-\|-\|-\|-\|	2

Note: Certain areas may be locked higher than the above minimums. Please do not lower locks unless approved by the RC or SM of South Carolina.

Naming

State Highways should be named to match local signage and/or county GIS with the state highway name of SC-### listed as an alternate name. If there is no local name of a state highway then it should be named SC-###. The same rules apply to US Highways as well.

State Secondary Routes are state-maintained roadways that are not part of the state highway system. This number is typically signed with a small black sign at any such roadway. These should be named as S-##-XXX, where ## is the number of the county (alphabetical order, see chart above; Abbeville is 1, York is 46) and XXX is the route number (e.g. 18); the full name for route 18 in York county would therefore be S-46-18. This name should only be set as an alternate road name. In rare cases, a road will have this number and no name; in this case, it should be named "Rd XXX", with the full number as an alternate. For example, S-3-497 in Ulmer is named "Rd 497" with the alt name "S-3-497". Consult with the State Manager before changing a name to the "Rd XXX" system.

Both state highway numbers and state secondary route numbers can be easily accessed online with SC Street finder.

County Road numbers in South Carolina are usually not easily available and never signed; however, in places where they can be found more easily we use CR-XXX to mark them. Note some interstate exits will label a road as being "County Rd XXX". This does NOT mean that this is a county route; usually, they are state secondary routes.

@@ Line 1: / Line 1: @@
 <!-- This page is only transcluded into (displayed on) the main page for this state. See more detailed instructions below. --><noinclude>{{:USA/CommonState/ReturnPurge|{{SubPage2}}}}<br/></noinclude><!--
 ------ DO NOT MODIFY ABOVE THIS LINE -------- DO NOT MODIFY ABOVE THIS LINE ------>
+<!--
+'''Note:''' There is an issue with basemap roads without a city and name being listed as in another state (most commonly [[Georgia]] or [[North Carolina]]). '''''Double-check the state attribute of each road you edit!''''' You can also use the [http://www.waze.com/forum/viewtopic.php?f=819&t=76488 Validator script] to highlight roads with a state other than SC (custom check; template: ${state}, regex: !/^South Carolina$/).
+-->
+=== Road typing ===
+{{RootPage}} follows the national guidelines for [[road types]].
+[http://info.scdot.org/sites/GIS/SitePages/FunctionalClassSearch.aspx South Carolina PDF Functional Classification Maps]
+[http://scdot.maps.arcgis.com/apps/webappviewer/index.html?id=093bfb899141463cbacd879fc271a8c9 South Carolina ARCGIS Functional Classification Map]
+[https://drive.google.com/open?id=0ByTyq-b8EPlqcFNkd3VFQmJwOVU South Carolina Functional Classification Geojson Files]
+State secondary routes (those numbered S-##-###) are not considered County Routes for the purposes of road typing.
+Unpaved roads (dirt, gravel, etc.), if unclassified or classified as Collector on Functional Classification maps, should always be set to the "Dirt road / 4x4 trail" type.  If there is an unpaved road classed as an Arterial, it should be mapped according to Functional Classification.
-'''Note:''' There is an issue with basemap roads without a city and name being listed as in another state (most commonly [[Georgia]] or [[North Carolina]]). '''''Double-check the state attribute of each road you edit!''''' You can also use the [http://www.waze.com/forum/viewtopic.php?f=819&t=76488 Validator script] to highlight roads with a state other than SC (custom check; template: ${state}, regex: !/^South Carolina$/).
+Here is a [https://docs.google.com/spreadsheets/d/1GjUUiBdVGZtfcIooHlKXMh-WNk7hwpDCvlQEU0uIuQ0/edit?usp=sharing list of current deviations from the national standard].
+==== Locking ====
+{{Lock Standard State|SC}}
 === Naming ===
-State Highways should be named as '''SC-XXX'''. This includes both primary and alternate names for a road.
+State Highways should be named to match local signage and/or county GIS with the state highway name of '''SC-###''' listed as an alternate name.  If there is no local name of a state highway then it should be named '''SC-###'''.  The same rules apply to US Highways as well.
+State Secondary Routes are state-maintained roadways that are not part of the state highway system.  This number is typically signed with a small black sign at any such roadway.  These should be named as '''S-##-XXX''', where ## is the number of the county (alphabetical order, see chart [[#County_resources|above]]; Abbeville is 1, York is 46) and XXX is the route number (e.g. 18); the full name for route 18 in York county would therefore be S-46-18. This name should only be set as an alternate road name. In rare cases, a road will have this number and no name; in this case, it should be named "Rd XXX", with the full number as an alternate.  For example, S-3-497 in Ulmer is named "Rd 497" with the alt name "S-3-497".  Consult with the State Manager before changing a name to the "Rd XXX" system.
+Both state highway numbers and state secondary route numbers can be easily accessed online with [http://www.scdot.org/getting/streetfinder.aspx SC Street finder].
-Secondary Routes should be named as '''S-##-XXX''', where ## is the number of the county (alphabetical order, see chart [[#County_resources|above]]; Abbeville is 1, York is 46) and XXX is the route number (e.g. 18); the full name for route 18 in York county would therefore be S-46-18. This name should be set as the alternate road name(s), where appropriate, and only as the primary road name in rare circumstances. Consult with the State Manager before doing this.
+County Road numbers in South Carolina are usually not easily available and never signed; however, in places where they can be found more easily we use '''CR-XXX''' to mark them.  Note some interstate exits will label a road as being "County Rd XXX". This does NOT mean that this is a county route; usually, they are state secondary routes.
 <!---- DO NOT MODIFY BELOW ------ DO NOT MODIFY BELOW ------ DO NOT MODIFY BELOW ----