Digital Metadata for FAF-3.1 Release
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Identification Information
Data Set Identity: Freight Analysis Framework (FAF) Network
Identification Code: None
Data Set Description: The spatial component of the FAF network is derived from National Highway System Version 2009.11 and contains state primary and secondary roads, National Highway System (NHS), National Network (NN) and several intermodal connectors as appropriate for the freight network modeling. The network consists of over 447,808 miles of equivalent road mileage. The data set covers the 48 contiguous States plus the District of Columbia, Alaska, and Hawaii. The nominal scale of the data set is 1:100,000 with a maximal positional error of ±80 meters.
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Network
Bounding Coordinates:
West_Bounding_Coordinate: -88.468248
East_Bounding_Coordinate: -84.995385
North_Bounding_Coordinate: 35.005803
South_Bounding_Coordinate: 30.251503
Data Set Citation: "Freight Analysis Framework Network Machine Readable Data Files" were prepared by the Federal Highway Administration Office of Freight Management and Operations, Washington DC, 2010
Data Set Credit: The freight assignment, capacity analysis and modeling portions of "FAF Network" are developed by Battelle Memorial Institute, Columbus, OH.
Use Restrictions: The FAF network, or any portion thereof, can be freely distributed as long as this metadata entry is included with each distribution. The original metadata entry cannot be modified or deleted from any data transfer.
Data Quality Information
Beginning Date of Information Content: 20101025
Ending Date of Information Content: 20101025
Thematic Quality:
- Thematic Accuracy Report: The FAF network retains NHS Version 2009.11 attribute fields of RECTYPE, ORIGID, STFIPS, CTFIPS, SIGN1, SIGNT1, SIGNN1, SIGNQ1, SIGN2, SIGNT2, SIGNN2, SIGNQ2, SIGN3, SIGNT3, SIGNN3, SIGNQ3, LNAME, MILES, FCLASS, RUCODE, STATUS, NHS. All other fields listed in the NHS Version 2009.11 metadata are dropped. The accuracy of these fields is consistent with Version 2009.11 except the MILES attribute values. The accuracy of field "MILES" is unverified and may have distorted during modification of the network for modeling purpose. New fields added to FAF network are, ID, LENGTH, DIR, NN, TRK_RTE and LCV_TYPE. The field "ID" is used to join the freight modeling algorithm variables for assignment as well as assignment outputs for thematic display purpose. The mileage reported in the field "LENGTH" is based on great circle distance.
Logical Consistency Report: All node and link topological relationships and uniqueness of entity IDs are verified by computer algorithm.
Completeness Report: The completed FAF network was delivered to the FHWA on October 2010.
Positional Quality:
Horizontal Positional Quality
Horizontal Positional Accuracy Report: As reported in the NHS Version 2009.11 metadata, the elements of the NHS have been conflated to the 1:100,000 DLG-3 data set which maintains a nominal accuracy of at least ±80 meters. Where new roads have been added which are not in the DLG-3 database link alignments have been digitized or converted from digital sources acquired from State DOTs with a map scale of at least 1:100,000.
Spatial Data Organization Information
- Direct Spatial Reference Method:Vector
- Point and Vector Object Information:
-
Vector Object Information:
- SDTS Vector Object Type: "line, non-planar graph"
- Vector Object Count: 170,994
-
Vector Object Information:
- Point and Vector Object Information:
Spatial Reference Information
- Horizontal Coordinate System Definition:
- Geographic:
- Latitude Resolution: 0.000464
- Longitude Resolution: 0.000464
- Geographic Coordinate Units: "Decimal Degrees"
- Geographic:
Status Information
- Data Set Status: Available
- Release Date: 20101025
- Maintenance And Update Frequency: None
Lineage
- Source Information:
- Source Citation: "NHS Version 2009.11, Federal Highway Administration, Washington DC, HEP-10
- Source Citation Abbreviation: NSH V 2009.11
- Beginning Date of Source Currentness: 20100831
- Source Contribution: NHS, Interstate, and other arterial highway system, intermodal connectors.
Process_Step:
- Process_Description: Update NHS and intermodal connector links. States edge matched and NHS attributes verified.
- Process_Date: 20101025
- Process_Step:
- Process_Description: Update and integrate intermodal terminals. States geo-location matched and attributes verified.
- Process_Date: 20101025 Process_Step:
- Process_Description: Modified NHS codes as per direction of the FHWA.
- Process_Date: 20101025 Process_Step:
- Process_Description: Verified Intermodal terminals.
- Process_Date: 220101025
- Process_Step:
- Process_Description: Modified NHS based on amendments.
- Process_Date: 220101025
Process_Step:
- Process_Description: Update LCV codes based on FHWA Truck Size and Weight Regulations. Verified with state specific input from DOT website or direct contact.
- Process_Date: 220101025
- Process_Description: Update National Network (NN) codes based on the information provided to Battelle by the FHWA office of Freight Management and Operation and the information sited under FHWA Truck Size and Weight Regulation Study, 1998.
- Process_Date: 220101025
- Process_Description: Update truck route restrictions code and include restrictions due to height and hazmat designation using the State data sources, and the Rand McNally truck road atlas.
Entity and Attribute Information
- Entity And Attribute Overview: Data dictionaries for FAF network link, freight assignment output and capacity analysis output are available in the Freight Analysis Framework Methodology Document.
ID
Integer
Unique Identification Number
LENGTH
Number
Length of arc (miles)
DIR
Number
Freight Direction for Freight Modeling
0 Both Direction
1 Link AB Direction
-1 Link BA DirectionRECTYPE
Character
Identifies Arc File records, valid value 'L'
VERSION
Character
The Version ID is used to maintain consistency across data files containing alternate releases of the FAF. The Version Code consists of a leading Version Number (Main release) and a trailing number (modification number), thus, 3.1 describes Major Release 3 and modification number 1.
STATE
Character
State Abbreviation
STFIPS
Numeric
State FIPS Code
CTFIPS
Numeric
3 digit County FIPS Code
SIGN1
Character
Designated primary Sign Route for the arc.
SIGNT1
Character
Describes the type of the sign route.
- Attribute_Domain_Values:
- Enumerated_Domain_Value: 'I'
- Enumerated_Domain_Value_Definition: Interstate
- Enumerated_Domain_Value: 'U'
- Enumerated_Domain_Value_Definition: US Route
- Enumerated_Domain_Value: 'S'
- Enumerated_Domain_Value_Definition: State Route
- Enumerated_Domain_Value: 'O'
- Enumerated_Domain_Value_Definition: Off-Interstate Business Marker
- Enumerated_Domain_Value: 'C'
- Enumerated_Domain_Value_Definition: County Route
- Enumerated_Domain_Value: 'T'
- Enumerated_Domain_Value_Definition: Township
- Enumerated_Domain_Value: 'M'
- Enumerated_Domain_Value_Definition: Municipal
- Enumerated_Domain_Value: 'P'
- Enumerated_Domain_Value_Definition: Parkway or Forest Route Marker
- Enumerated_Domain_Value: 'N'
- Enumerated_Domain_Value_Definition: None of the above
- Enumerated_Domain_Value: (blank) Enumerated_Domain_Value_Definition: Not signed or not applicable
SIGNN1
Character
Contains the actual sign route numbers. Using HPMS standards, an optional directional indicator (N, S, E, W) can also be used as part of this field.
SIGNQ1
Character
Sign Route Qualifier Record which is used to qualify the sign route description follows the Sign Route Number.
- Enumerated_Domain_Value: 'A'
- Enumerated_Domain_Value_Definition: Alternate Route
- Enumerated_Domain_Value: 'B'
- Enumerated_Domain_Value_Definition: Business Route
- Enumerated_Domain_Value: 'P'
- Enumerated_Domain_Value_Definition: By Pass
- Enumerated_Domain_Value: 'S'
- Enumerated_Domain_Value_Definition: Spur
- Enumerated_Domain_Value: 'L'
- Enumerated_Domain_Value_Definition: Loop
- Enumerated_Domain_Value: 'F'
- Enumerated_Domain_Value_Definition: Proposed (future)
- Enumerated_Domain_Value: 'D'
- Enumerated_Domain_Value_Definition: Temporary (detour)
- Enumerated_Domain_Value: 'T'
- Enumerated_Domain_Value_Definition: Truck Route
- Enumerated_Domain_Value: 'N'
- Enumerated_Domain_Value_Definition: None of the above
- Enumerated_Domain_Value: (Blank)
- Enumerated_Domain_Value_Definition: No Qualifier, not signed, or not applicable
SIGN2
Character
contains the designated secondary Sign Route for the arc.
SIGNT2
Character
Describes the type of the sign route.
- Enumerated_Domain_Value: 'I'
- Enumerated_Domain_Value_Definition: Interstate
- Enumerated_Domain_Value: 'U'
- Enumerated_Domain_Value_Definition: US Route
- Enumerated_Domain_Value: 'S'
- Enumerated_Domain_Value_Definition: State Route
- Enumerated_Domain_Value: 'O'
- Enumerated_Domain_Value_Definition: Off-Interstate Business Marker
- Enumerated_Domain_Value: 'C'
- Enumerated_Domain_Value_Definition: County Route
- Enumerated_Domain_Value: 'T'
- Enumerated_Domain_Value_Definition: Township
- Enumerated_Domain_Value: 'M'
- Enumerated_Domain_Value_Definition: Municipal Enumerated_Domain_Value: 'P'
- Enumerated_Domain_Value_Definition: Parkway or Forest Route Marker Enumerated_Domain_Value: 'N'
- Enumerated_Domain_Value_Definition: None of the above
- Enumerated_Domain_Value: (blank)
- Enumerated_Domain_Value_Definition: Not signed or not applicable
SIGNN2
Character
Contains the actual sign route numbers.
SIGNQ2
Character
Sign Route Qualifier Record
- Enumerated_Domain_Value: 'A'
- Enumerated_Domain_Value_Definition: Alternate Route
- Enumerated_Domain_Value: 'B'
- Enumerated_Domain_Value_Definition: Business Route
- Enumerated_Domain_Value: 'P'
- Enumerated_Domain_Value_Definition: By Pass
- Enumerated_Domain_Value: 'S'
- Enumerated_Domain_Value_Definition: Spur
- Enumerated_Domain_Value: 'L'
- Enumerated_Domain_Value_Definition: Loop
- Enumerated_Domain_Value: 'F'
- Enumerated_Domain_Value_Definition: Proposed (future)
- Enumerated_Domain_Value: 'D'
- Enumerated_Domain_Value_Definition: Temporary (detour)
- Enumerated_Domain_Value: 'T'
- Enumerated_Domain_Value_Definition: Truck Route
- Enumerated_Domain_Value: 'N'
- Enumerated_Domain_Value_Definition: None of the above
- Enumerated_Domain_Value: (Blank)
- Enumerated_Domain_Value_Definition: No Qualifier, not signed, or not applicable.
SIGN3
Character
Contains the designated additional secondary Sign Route
SIGNT3
Character
Describes the type of the sign route.
- Enumerated_Domain_Value: 'I'
- Enumerated_Domain_Value_Definition: Interstate
- Enumerated_Domain_Value: 'U'
- Enumerated_Domain_Value_Definition: US Route
- Enumerated_Domain_Value: 'S'
- Enumerated_Domain_Value_Definition: State Route
- Enumerated_Domain_Value: 'O'
- Enumerated_Domain_Value_Definition: Off-Interstate Business Marker
- Enumerated_Domain_Value: 'C'
- Enumerated_Domain_Value_Definition: County Route
- Enumerated_Domain_Value: 'T'
- Enumerated_Domain_Value_Definition: Township
- Enumerated_Domain_Value: 'M'
- Enumerated_Domain_Value_Definition: Municipal
- Enumerated_Domain_Value: 'P'
- Enumerated_Domain_Value_Definition: Parkway or Forest Route Marker
- Enumerated_Domain_Value: 'N'
- Enumerated_Domain_Value_Definition: None of the above
- Enumerated_Domain_Value: (blank)
- Enumerated_Domain_Value_Definition: Not signed or not applicable
SIGNN3
Character
Contains the actual sign route numbers
SIGNQ3
Character
Sign Route Qualifier Record which
- Enumerated_Domain_Value: 'A'
- Enumerated_Domain_Value_Definition: Alternate Route
- Enumerated_Domain_Value: 'B'
- Enumerated_Domain_Value_Definition: Business Route
- Enumerated_Domain_Value: 'P'
- Enumerated_Domain_Value_Definition: By Pass
- Enumerated_Domain_Value: 'S'
- Enumerated_Domain_Value_Definition: Spur
- Enumerated_Domain_Value: 'L'
- Enumerated_Domain_Value_Definition: Loop
- Enumerated_Domain_Value: 'F'
- Enumerated_Domain_Value_Definition: Proposed (future)
- Enumerated_Domain_Value: 'D'
- Enumerated_Domain_Value_Definition: Temporary (detour)
- Enumerated_Domain_Value: 'T'
- Enumerated_Domain_Value_Definition: Truck Route
- Enumerated_Domain_Value: 'N'
- Enumerated_Domain_Value_Definition: None of the above
- Enumerated_Domain_Value: (Blank)
- Enumerated_Domain_Value_Definition: No Qualifier, not signed, or not applicable.
LNAME
Character
Local Road Name
MILES
Numeric
Length of arc (miles)
FCLASS
Numeric
Functional Class
01 Rural Interstate
02 Rural Principal Arterial
06 Rural Minor Arterial
07 Rural Major Collector
08 Rural Minor Collector
09 Rural Local
11 Urban Interstate
12 Urban Freeway or Expressway
14 Urban Principal Arterial
16 Urban Minor Arterial
17 Urban Collector
19 Urban LocalRUCODE
Numeric
Rural/Urban Code
1 Rural
2 Small Urban (1990 pop 5,000 -49,999)
3 Large Urban (1990 >= 50,000)STATUS
Numeric
Open status of road
Proposed/Under construction
Open to traffic
Ferry route
Canadian routes connecting Alaska to the contiguous States.NHS
Numeric
National Highway System
Not on NHS
Interstate
Non-Interstate STRAHNET
STRAHNET Connector
Other NHS
Approved Intermodal ConnectorNN
Numeric
National Network
1 on NN system
TRK_Type
Numeric
Truck route related restrictions
1 State designated truck route
2 NN system
3 Long Combination Vehicle (LCV) route
5 Arc with state truck restriction
6 Low clearance
8 NN with low clearance
9 NN with state truck restriction
11 Hazmat restriction
09 Rural LocalLCV_TYPE
Integer
Identify the LCV character
1 Double with length less than 100'
2 Double with length up to and over 100'
3 Double and Triple with length less than 100'
5 Double and triple up to and over 100'
6 Low clearance - Attribute_Domain_Values:
Distribution Information
- Distribution Contact:
Contact Information: Mr. Michel Sprung
Federal Highway Administration
Office of Freight Management & Operations
1200 New Jersey Ave, SE
Washington, DC 20590 - Distribution Liability: None
- Standard Transfer Options:
- Digital Form:
- Digital Transfer Information:
- Format Name: shape file
- Format Version Number: generic
- Format Version Date: none
- Digital Transfer Options:
- Offline Options:
- Offline Media:CD-ROM
- Recording Format: generic
- Computability Information: None
- Offline Media:CD-ROM
- Offline Options:
- Digital Transfer Information:
- Digital Form:
Metadata Reference Information
- Metadata Date: 20101025
- Metadata Standard Name: FGDC Content Standards for Digital Spatial Metadata
- Metadata Standard Version: 19940331
Contact Information
Office of Freight Management & Operations
1200 New Jersey Ave, SE
Washington, DC 20590
Washington, DC 20590
- Contact Voice Telephone: (202) 366-9047
- Contact Email: Michael.Sprung@dot.gov
- Contact Instructions: Between hours of 9 am and 3 p.m. Eastern Standard Time