Office of Operations Freight Management and Operations

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

Spatial Reference Information



  • Horizontal Coordinate System Definition:
    • Geographic:
      • Latitude Resolution: 0.000464
      • Longitude Resolution: 0.000464
      • Geographic Coordinate Units: "Decimal Degrees"

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 Direction

    RECTYPE

    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 Local

    RUCODE

    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 Connector

    NN

    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 Local

    LCV_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

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

Metadata Reference Information

  • Metadata Date: 20101025
  • Metadata Standard Name:     FGDC Content Standards for Digital Spatial Metadata
  • Metadata Standard Version: 19940331

Contact Information

Contact Organization Primary: 
        
Federal Highway Administration
Office of Freight Management & Operations
1200 New Jersey Ave, SE
Washington, DC 20590
Contact Mail Address: 
1200 New Jersey Ave, SE
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

Office of Operations