TransStats_HCL20062010

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: VT Agency of Transportation
Publication_Date: 20131121
Publication_Time: unknown
Title: TransStats_HCL20062010
Edition: 2006-2010
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: High Crash Locations (HCL) between 2006 and 2010
Issue_Identification: 2006-2010
Publication_Information:
Publication_Place: Montpelier, VT 05633
Publisher: GIS Database Administrator
Other_Citation_Details: Tile Structure - STATE
Description:
Abstract:
The HCL20062010 dataset contains High Crash Locations (HCLs) for intersections and sections for data years 2006-2010. The HCLs in this dataset are based on the number of crashes and not the severity of the crashes. The intersections and sections analyzed in this dataset are limited to those highways that fall under the Federal Aid Highway system.
A good overview of of the 2006-2010 HCL data is available in this PDF
<http://vtransplanning.vermont.gov/sites/aot_policy/files/documents/highwayresearch/2006-2010_High_Crash_Location_Report.pdf>
Purpose: Provide a dataset identifying High Crash Locations in Vermont.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2006 to 2010
Time_of_Day: Unknown
Currentness_Reference: Ground Conditions
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.394156
East_Bounding_Coordinate: -71.580445
North_Bounding_Coordinate: 45.002172
South_Bounding_Coordinate: 42.758077
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: transportation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: crashes
Theme_Keyword: accidents
Theme_Keyword: high crash locations
Theme_Keyword: HCL
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Vermont
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2006 to 2010
Access_Constraints:
VCGI and the State of VT make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Use_Constraints: None.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Database Administrator
Contact_Organization: Vermont Agency of Transportation (VTrans) - Mapping & GIS Unit
Contact_Position: VTrans GIS Database Administrator
Contact_Address:
Address_Type: mailing and physical address
Address: VTrans - Technical Services Division
Address: The National Life Building
Address: Drawer 33
City: Montpelier
State_or_Province: VT
Postal_Code: 05633-5001
Country: USA
Contact_Voice_Telephone: 802/828-2600
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone: 802/828-2334
Contact_Electronic_Mail_Address: johnathan.croft@state.vt.us
Hours_of_Service: 8:00am - 4:30pm, M-F
Data_Set_Credit: VTrans Traffic Research
Security_Information:
Security_Classification_System: N/A
Security_Classification: Unclassified
Security_Handling_Description: No Security Considerations
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Refer to the logical consistency report
Logical_Consistency_Report:
The following language was pulled from the HCL 2006-2010 narrative summary available from this URL
<http://vtransplanning.vermont.gov/sites/aot_policy/files/documents/highwayresearch/2006-2010_High_Crash_Location_Report.pdf>
As noted above, this HCL dataset includes intersections and sections that involve Federal Aid eligible highways only.
The intersections are analyzed based on predefined intersection limits:
In rural areas, the posted speed limit is used to determine the standard for Stopping Sight Distance (SSD) as identified in the AASHTO handbook. Each leg of an intersection should be identified and the SSD determined for the intersection influence. The SSD length acts as that leg’s influence length. In rural areas (as identified by the Functional Classification Map) this table is used directly.
In suburban (built up areas outside of the designated urban area) and urban areas (as identified by the Functional Classification Map) the intersection influence process takes into account overlapping areas of intersection influence from adjacent intersections. In suburban areas we use the SSD table results for each leg, and in the case where legs of two adjacent intersections overlap, the difference is split.
For urban areas, the length of influence for each approach on an intersection is 0.01 mile.
Highway sections are analyzed based on a sliding 0.30 mile section, one 0.10 mile at a time, along the entire length of a route.
Where an HCL intersection occurs within the area of an HCL section, the intersection HCL rules and will be listed in this report and the HCL sections for the legs of the intersection will not be listed.
In the event of overlapping HCL sections, the HCL listed in this report will be those sections with the higher Actual/Critical ratio. When overlapping occurs, it is an indication that the listed HCL section may be part of a longer HCL.
All HCLs in the attached tables that are located within the limits of an anticipated project (as identified in the Capital Program) are flagged with an asterisk (*). Projects include highway or bridge realignment or reconstruction, but do not include paving nor bridge rehabilitation. Further, project flag (*) includes widening, signals, and pavement markings (such as for new turn lanes).
All HCLs that are located within a Class 1 Town Highway section are noted with the number symbol (#).
Although an HCL may rank very high on the listing, in-depth study must be conducted to determine the feasibility of corrective measures before adding the location to the construction program.
For a Section or Intersection to be identified as an HCL, two criteria must be satisfied:
1. The location must have experienced five (5) or more crashes in a fiveyear period, or the average of one (1) crash per year, and;
2. The Actual/Critical ratio must be 1.000 or higher. Formulas to calculate this information are on the following page. This report includes HCLs where the Actual Rate to Critical Rate Ratio is 1.0 or greater.
Misc Notes Roundabouts and Traffic Circles in this report are treated as individual intersections. As an example, the VT-9 and US-5 roundabout in Brattleboro is treated as a four leg intersection for purposes of this report. There exists along many routes what we refer to as “ghost” sections. These are highway sections where the physical mileage (or Mile Marker) points are noncontiguous. As an example: A VT numbered route runs for several miles until it comes to an intersection with a US route. Then you have to traverse a part of the US route in order to get to the continuation of the VT route. Therefore, the Mile Marker points for the VT route are not physically continuous, but separated by the length of the US route.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Unknown
Vertical_Positional_Accuracy:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: VTrans Traffic Research
Publication_Date: 20131121
Publication_Time: unknown
Title: High Crash Locations: 2006 - 2010
Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:
Publication_Place: Montpelier, VT
Publisher: VTrans Traffic Research
Type_of_Source_Media: tabular digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2006 - 2010
Time_of_Day: Unknown
Source_Citation_Abbreviation: HCL
Source_Contribution: VTrans
Process_Step:
Process_Description:
VCGI received copy of HCL 2006-2010 intersections and sections. from VTrans Mapping Unit. Data was loaded into the VGIS Data Warehouse for public distribution. Metadata was drafted and posted.
Process_Date: 20131121
Process_Time: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steve Sharp
Contact_Organization: VCGI
Contact_Position: GIS Database Administrator

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: LINE
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 133
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 683

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 4400
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999964
Longitude_of_Central_Meridian: -72.500000
Latitude_of_Projection_Origin: 42.500000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000156
Ordinate_Resolution: 0.000156
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 0.000156
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: TransStats_HCL20062010_Line_Intrsec
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: ID
Attribute:
Attribute_Label: ETE_LR
Attribute:
Attribute_Label: TWN_LR
Attribute:
Attribute_Label: TWN_FMM
Attribute:
Attribute_Label: TWN_TMM
Attribute:
Attribute_Label: CTCODE
Attribute:
Attribute_Label: Asterix
Attribute:
Attribute_Label: HCL_NO
Attribute:
Attribute_Label: Route
Attribute:
Attribute_Label: System
Attribute:
Attribute_Label: Town
Attribute:
Attribute_Label: Mileage
Attribute:
Attribute_Label: ADT
Attribute:
Attribute_Label: Years
Attribute:
Attribute_Label: Crashes
Attribute:
Attribute_Label: Fatalities
Attribute:
Attribute_Label: Injuries
Attribute:
Attribute_Label: PDO_Crashe
Attribute:
Attribute_Label: CriticalRa
Attribute:
Attribute_Label: ActualRate
Attribute:
Attribute_Label: RatioActua
Attribute:
Attribute_Label: IndexDolla
Attribute:
Attribute_Label: LOC_ERROR
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Detailed_Description:
Entity_Type:
Entity_Type_Label: TransStats_HCL20062010_Line_Section
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: ID
Attribute:
Attribute_Label: ETE_LR
Attribute:
Attribute_Label: TWN_LR
Attribute:
Attribute_Label: TWN_FMM
Attribute:
Attribute_Label: TWN_TMM
Attribute:
Attribute_Label: CTCODE
Attribute:
Attribute_Label: Asterix
Attribute:
Attribute_Label: HCL_NO
Attribute:
Attribute_Label: Route
Attribute:
Attribute_Label: System
Attribute:
Attribute_Label: Town
Attribute:
Attribute_Label: Mileage
Attribute:
Attribute_Label: ADT
Attribute:
Attribute_Label: Years
Attribute:
Attribute_Label: Crashes
Attribute:
Attribute_Label: Fatalities
Attribute:
Attribute_Label: Injuries
Attribute:
Attribute_Label: PDO_Crashe
Attribute:
Attribute_Label: CriticalRa
Attribute:
Attribute_Label: ActualRate
Attribute:
Attribute_Label: RatioActua
Attribute:
Attribute_Label: IndexDolla
Attribute:
Attribute_Label: LOC_ERROR
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Trans_HCL20062010_line_Section
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: ID
Attribute:
Attribute_Label: ETE_LR
Attribute:
Attribute_Label: TWN_LR
Attribute:
Attribute_Label: TWN_FMM
Attribute:
Attribute_Label: TWN_TMM
Attribute:
Attribute_Label: CTCODE
Attribute:
Attribute_Label: Asterix
Attribute:
Attribute_Label: HCL_No
Attribute:
Attribute_Label: Route
Attribute:
Attribute_Label: System
Attribute:
Attribute_Label: Town
Attribute:
Attribute_Label: Mileage
Attribute:
Attribute_Label: ADT
Attribute:
Attribute_Label: Years
Attribute:
Attribute_Label: Crashes
Attribute:
Attribute_Label: Fatalities
Attribute:
Attribute_Label: Injuries
Attribute:
Attribute_Label: PDO_Crashe
Attribute:
Attribute_Label: CriticalRa
Attribute:
Attribute_Label: ActualRate
Attribute:
Attribute_Label: RatioActua
Attribute:
Attribute_Label: IndexDolla
Attribute:
Attribute_Label: Type
Attribute:
Attribute_Label: LOC_ERROR

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 58 South Main Street, Suite 2
City: Waterbury
State_or_Province: VT
Postal_Code: 05676
Country: USA
Contact_Voice_Telephone: 802/882-3000
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone: 802/882-3001
Contact_Electronic_Mail_Address: info@vcgi.org
Hours_of_Service: 9am - 5pm, M-F
Resource_Description: TransStats_HCL20062010
Distribution_Liability:
VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Specification: ESRI Shapefile format (compressed into ZIP file format)
Format_Information_Content: geospatial data
File_Decompression_Technique: ZIP extraction tool
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://vcgi.vermont.gov/warehouse/?layer=TransStats_HCL20062010>
Access_Instructions: Download from web site.
Offline_Option:
Offline_Media: USB drive
Fees:
No charge when downloading from the internet, and when no custom processing is required.
Ordering_Instructions:
Download from web site or mail-fax a copy of the VCGI 'Data Request Form' which is available from the VGIS web site <http://vcgi.vermont.gov/warehouse/order_forms>
Turnaround: About 5 days.
Custom_Order_Process:
Mail or Fax a copy of the VCGI 'Data Request Form' which is available from <http://vcgi.vermont.gov/warehouse/order_forms>
Technical_Prerequisites: ESRI Arc/Info, ArcView, or ArcExplorer software.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20131121
Time_of_Day: Unknown

Metadata_Reference_Information:
Metadata_Date: 20131121
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Person: GIS Database Administrator
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 58 South Main Street, Suite 2
City: Waterbury
State_or_Province: VT
Postal_Code: 05676
Country: USA
Contact_Voice_Telephone: 802/882-3000
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone: 802/882-3001
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification_System: N/A
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: No security considerations
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.5 on Mon Dec 02 15:11:45 2013