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Each all lines shapefile describes the universe of edges that either bound or are included within a county or equivalent entity.  The shapefile describes the geometry of each edge along with descriptive attributes and unique identification numbers.  These identification numbers provide the means for linking the edges to alternate features their names, address ranges, and the adjacent faces.

 

The All Lines/Edges shapefile contains visible linear feature edges such as roads, railroads, and hydrography, as well as non-feature edges and non-visible boundaries.  Additional attribute data associated with the linear feature edges found in the All Lines shapefiles are available in relationship files that users must download separately.

 

The All Lines shapefile contains the geometry and attributes of each topological primitive edge.  Each edge has a unique TLID (permanent edge identifier) value.  The edge’s left and right faces can be identified by the TFIDL (permanent face identifier on the left side of the edge) and TFIDR (permanent face identifier on the right side of the edge) attributes which link to the TFID attribute in the Topological Faces shapefile.

 

The left and right side of an edge is determined by the order of the points that form the edge. An edge is oriented from the start node to the end node. If one is standing on an edge at the start node facing the end node, data listed in the fields carrying a right qualifier would be found to the right of the edge.  Data users can employ GIS software to plot the edges as directional vectors with arrows showing the orientation of edges.

 

In the MAF/TIGER database, edges may represent several types of features. The series of indicator flags (HYDROFLG, ROADFLG, RAILFLG, and OLFFLG) indicate the classes of features that share the edge. For example, a road may have embedded tracks; the corresponding edge will have both the ROADFLG (road feature indicator) and RAILFLG (rail feature indicator) set. Generally, certain feature types appear together on the same edge:

 

Road and Rail—roads with adjacent tracks, tracks embedded in roadways or tracks located in the median

 

Rail and Other Linear Feature—rail features located on dams and levees

 

Road and Other Linear Feature—road features located on dams and levees

 

The MAF/TIGER feature class code (MTFCC) identifies the specific code for the primary feature on the edge.  For edges that represent roads in combination with other features, the MTFCC in the All Lines Shapefile will reflect the road feature.

 

All Lines Shapefile (county-based) Record Layout
tl_2013_[state-county FIPS]_edges.shp
Field	Length	Type	Description
STATEFP	2	String	State FIPS code
COUNTYFP	3	String	County FIPS code
TLID	10	Integer	Permanent edge ID
TFIDL	10	Integer	Permanent face ID on the left of the edge
TFIDR	10	Integer	Permanent face ID on the right of the edge
MTFCC	5	String	MAF/TIGER feature class code of the primary feature for the edge
FULLNAME	100	String	Concatenation of expanded text for prefix qualifier, prefix direction, prefix type, base name, suffix type, suffix direction, and suffix qualifier with a space between each expanded text field (as available)
SMID	22	String	Spatial metadata identifier
LFROMADD	12	String	From house number associated with the most inclusive address range on the left side of the edge
LTOADD	12	String	To house number associated with the most inclusive address range on the left side of the edge
RFROMADD	12	String	From house number associated with the most inclusive address range on the right side of the edge
RTOADD	12	String	To house number associated with the most inclusive address range on the right side of the edge
ZIPL	5	String	ZIP code associated with the most inclusive address range on the left side
ZIPR	5	String	ZIP code associated with the most inclusive address range on the right side
FEATCAT	1	String	General feature classification category
HYDROFLG	1	String	Hydrography feature indicator
RAILFLG	1	String	Rail feature indicator
ROADFLG	1	String	Road feature indicator
OLFFLG	1	String	Other linear feature indicator
PASSFLG	1	String	Special passage flag
DIVROAD	1	String	Divided road flag
EXTTYP	1	String	Extension type
TTYP	1	String	Track type
DECKEDROAD	1	String	Decked road indicator
ARTPATH	1	String	Artificial path indicator
PERSIST	1	String	Hydrographic persistence flag
GCSEFLG	1	String	Short lines flag for geographic corridors
OFFSETL	1	String	Left offset flag
OFFSETR	1	String	Right offset flag
TNIDF	10	Integer	From TIGER node identifier
TNIDT	10		Integer To TIGER node identifier

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