FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION TITLE: TELEATLAS HIGHWAYS Q1-2009 Geodataset Name: GDT_HIGHWAYS_JAN09 Geodataset Type: SHAPEFILE Geodataset Feature: Polyline Feature Count: 46318 |
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GENERAL DESCRIPTION:
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DATA SOURCE(S): Tele Atlas(R) SCALE OF ORIGINAL SOURCE MAPS: N/A GEODATASET EXTENT: State of Florida |
FEATURE ATTRIBUTE TABLES:
Datafile Name: GDT_HIGHWAYS_JAN09.DBF
ITEM NAME | WIDTH | TYPE |
OBJECTID
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4 | OID |
SEGMENT_ID
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4 | Integer |
PREFIX
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2 | String |
NAME
|
50 | String |
TYPE
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6 | String |
SUFFIX
|
2 | String |
FCC
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3 | String |
ACC
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1 | String |
SHIELD
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2 | String |
HWY_NUM
|
5 | String |
SEG_LEN
|
8 | Double |
SPEED
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2 | SmallInteger |
ONE_WAY
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2 | String |
F_ZLEV
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2 | SmallInteger |
T_ZLEV
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2 | SmallInteger |
FT_COST
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8 | Double |
TF_COST
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8 | Double |
FT_DIR
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2 | String |
TF_DIR
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2 | String |
NAME_FLAG
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2 | SmallInteger |
DESCRIPT
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32 | String |
FGDLAQDATE
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36 | Date |
SHAPE
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4 | Geometry |
AUTOID
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4 | Integer |
SHAPE.LEN
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0 | Double |
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
Item | Item Description | |
OBJECTID |
Internal feature number. |
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SEGMENT_ID |
The unique segment identification number. This is not a Dynamap ID, since highway segments may have been chained from multiple street segments |
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PREFIX |
A 2-character field that is used to indicate a modifier to a highway, state highway or major thoroughfare name occurring before the highway name. Ex: 'E' Center Ave |
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NAME |
The concatenated full name of the highway segment |
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TYPE |
In most instances the highway type (Interstate, State Highway, etc.) is indicated in the Name field. In some cases, custom highway naming may require the type field to be filled with abbreviations such as 'BLVD' or 'PKWY' in the Highway layer |
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SUFFIX |
In most instances a highway suffix (I 91 N, State Highway 101 S, etc.) is indicated in the FT_DIR or TF_DIR directional field when a suffix indicates a direction. In some cases, custom highway naming may require the suffix field to be filled with abbreviations such as 'N' or 'S.' |
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FCC |
The feature class code that the street segment is associated with. Tele Atlas(R) FCCs are similar to the Census Bureau's CFCCs used in their TIGER(R) files. The FCC codes represented in this layer are: A1*: Divided Highways includes Interstates, Expressways and Parkways; A2*: U.S. Highways and Major State Highways; A3*: State Highways and Major Thoroughfares; A60: Ramps connecting A2/A3 series (Only those A60s with ACC codes of 1,2,3); A63: Ramps connecting A1/A2 series (Only those A63s with ACC codes of 1,2,3); A68: Vehicular Ferries: Seasonal; A69: Vehicular Ferries: Year Round. |
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ACC |
The set of Arterial Classification Codes (ACCs) is the Tele Atlas(R) system for categorizing roads according to the level of travel mobility that they provide in the road network. Mobility refers to the volume of traffic that a stretch of road carries and the length of trip that it serves. Valid entries are '1' for roads with highest mobility, through '5' for roads with least mobility. |
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SHIELD |
The first character of the Shield field indicates what shield should be used to represent each name based on its Primary Name. 'I' = Interstate, 'U' = US Hwy, 'S' = State Hwy, blank = other. The second character of the shield field indicates sub-classifications of the shield type. A shield subtype should not exist if there is not a primary shield type in the first character of the field. Valid entries are 'B' for business route; 'L' for loop; 'T' for truck; 'C' for connector; 'S' for spur; 'Y' for bypass; 'A' for alternate; 'X' for extended; 'N' for scenic. |
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HWY_NUM |
The Hwy_Num field indicates the number that appears in the shield for the highway. This will be present only for Interstates, U.S. Highways and State Highways. The HWY_NUM field will be populated only on FCC segments of A1*, A2* and A3*. |
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SEG_LEN |
The highway segment length in miles. The distance is calculated using the arc distance with correction for the earth's curvature. |
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SPEED |
The segment Speed field contains the average speeds categorized by FCC and defined in a Tele Atlas(R) FCC-to-Speed table document. The units are in miles per hour. |
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ONE_WAY |
The One_Way field is filled with either 'FT,' 'TF' or is blank. 'FT' indicates that the segment is one way, from the digitized From end to the digitized To end. 'TF' indicates the opposite direction of travel. A blank field indicates that travel is permitted in both directions. |
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F_ZLEV |
This field indicates the Z-axis relative elevation of a segment in the digitized 'From-to' direction. '0' indicates ground level; '1' indicates structures elevated one level above ground; '-1' indicates structures one level below ground level, etc. |
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T_ZLEV |
This field indicates the Z-axis relative elevation of a segment in the digitized 'To-from' direction. '0' indicates ground level; '1' indicates structures elevated one level above ground; '-1' indicates structures one level below ground level, etc. |
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FT_COST |
The cost to travel on a segment in the digitized From-To direction. The value of the cost is based on the length of the segment and its speed value. The units of cost are minutes. In some GIS formats, a '-1' value is a code that indicates that the street contains an alternate name. |
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TF_COST |
The cost to travel on a segment in the digitized To-From direction. The value of the cost is based on the length of the segment and its speed value. The units of cost are minutes. In some GIS formats, a '-1' value is a code that indicates that the street contains an alternate name. |
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FT_DIR |
The FT_Dir field conveys information about the described direction of travel along highways in the digitized From-to direction. This directional is not part of the recognized postal name. Permissible values for this field are N, S, E, W, NE, SE, NW, SW. |
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TF_DIR |
The TF_Dir field conveys information about the described direction of travel along highways in the digitized To-from direction. This directional is not part of the recognized postal name. Permissible values for this field are N, S, E, W, NE, SE, NW, SW. |
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NAME_FLAG |
For the Highway layer in this product, this field is a coded indicator of whether a highway name is most appropriate for statewide or cross-country directions (field content = '1') and whether the highway name also is appropriate for geocoding purposes (field content = '3'). |
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DESCRIPT |
Description field based on NAME |
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FGDLAQDATE |
FGDL added field based on date downloaded from source |
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SHAPE |
Feature geometry. |
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AUTOID |
Unique ID added by GeoPlan |
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SHAPE.LEN |
Length in meters |
In order to provide for reduced product size and algorithm efficiency, the Highways product extract process will normalize segments with similar attributes into highway chains. Database segments with the same set primary name and alternate names, as well as FCC, will be normalized into one highway chain. * Intermediate nodes will be converted into shape points. * All segment chains will stop at county borders in order to preserve county coding. * Segment chains will not cross County, MCD or Place boundaries. * Highway chains will break at the junction (valence 3 or greater) of any other highway chain. * There is a limit of 500 shape points that can be attributed to a single highway chain. * There will be no zero-length segments in the Highways product. * Highways chains will break at state boundaries. * Highways forming state boundaries will not be chained. |
All street segments in the Tele Atlas(R) database with an FCC = A1*, A2*, A3*, A60, A63, A68 and A69 are considered. After processing, the dataset is checked for drawing display, correct number of records, record schema consistency with specifications, correct file naming, file sizes and a comparison check with the contents of the Tele Atlas(R) database at the time of creation. |
GeoPlan relied on the integrity of the attribute information within the original data. |
To find out more about Dynamap(R)/Transportation and other available products, visit http://www.teleatlas.com. |
The primary purpose of the Dynamap(R)/Transportation Highway layer is for vehicle routing, dispatching and general map display. |
Tele Atlas(R) highway segments allow for six implied decimal places of precision. While minimum accuracy is consistent with 1990 TIGER/Line(R) files, accuracy is dependent on geographic area and sources used to update those areas. Selected geographic areas have been realigned to sub-12-meter accuracy. |
This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan |
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The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html |
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Tele Atlas(R) extracts the dataset quarterly from the Tele Atlas(R) database using proprietary software. Data then converted into multiple GIS formats. ISO quality standards are enforced throughout the production process. Data originally released by Tele Atlas in January 2009 on DVD. When received, data was in the following projection: Geographic Lat Long Datum D_WGS_1984, Units: Decimal Degrees. The GeoPlan QA/QC and standardization process included the following steps: 1. The data was renamed from flxxxhy to gdt_highways_jan09.shp 2. The data was reprojected to FGDL Albers HPGN map projection. 3. Added DESCRIPT field based on NAME 4. Added field FGDLAQDATE 5. Standardized Metadata 6. Deleted fields with empty values Process Date: 20090216 |
Projection ALBERS Datum HPGN Units METERS Spheroid GRS1980 1st Standard Parallel 24 0 0.000 2nd Standard Parallel 31 30 0.000 Central Meridian -84 00 0.000 Latitude of Projection's Origin 24 0 0.000 False Easting (meters) 400000.00000 False Northing (meters) 0.00000
DATA SOURCE CONTACT (S):
Name: Abbr. Name: Address: Phone: Web site: E-mail: Contact Person: Phone: E-mail: |
Tele Atlas(R) Tele Atlas 11 Lafayette Street Lebanon, NH 03766 (800)331-7881 |
Name: FLORIDA GEOGRAPHIC DATA LIBRARY Abbr. Name: FGDL Address: Florida Geographic Data Library 431 Architecture Building PO Box 115706 Gainesville, FL 32611-5706 Web site: http://www.fgdl.org Contact FGDL: Technical Support: http://www.fgdl.org/fgdlfeed.html FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html For FGDL Software: http://www.fgdl.org/software.html