CCMPO_AADT

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Chittenden County MPO(ed.)

Publication_Date: 20040130

Title: CCMPO_AADT

Edition: JAN 2008

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place: South Burlington, Vermont

Publisher: Chittenden County MPO

Online_Linkage: <http://www.ccmpo.org/data/counts.html>

Online_Linkage:

<http://www.aot.state.vt.us/>

Description:

Abstract:

CCMPO_AADT ~ This database contains a gamut of annually collected traffic data for Chittenden County, Vermont, from the period of 1944 through 2007. Contained within the zipfile referenced in this document, are -- a text-comma-delimited spreadsheet, a proprietary spreadsheet (Microsoft, Inc. Excel file), and a geospatial shapefile. Thus far, the items within the table of database reference the following; AADT (Annual Average Daily Traffic) Volumes on specific road segments, AADTT (Annual Average Daily Truck Traffic), Speed data (85th percentile, 10 MPH Pace, Mean Speed, & Some Posted Speed Limit data), Station site location descriptions, Station ID Numbers (those pertaining to a CCMPO assignment system, as well as the standard ID Numbers used by the Vermont Agency of Transportation - VTrans in their traffic counting program.)... This database consists of data retrieved and processed from Automatic Traffic Recorder (ATR) units utilised during CCMPO's & VTrans's annual Traffic Count Programs (conducted during non-winter months).

Purpose:

This data represents the status of traffic occurance on any particular segment of roadway or intersection assigned a "Traffic Count Station". It is used for traffic impact studies and scoping study alternatives, where data collected over time can yield an expected trend of traffic... The data is also used to check the accuracy of the CCMPO Regional Travel-Demand Model...

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19440000

Ending_Date: 20071201

Currentness_Reference: Publication Date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Annually

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -73.454162

East_Bounding_Coordinate: -71.465281

North_Bounding_Coordinate: 45.018361

South_Bounding_Coordinate: 42.722789

Keywords:

Theme:

Theme_Keyword_Thesaurus: Tri - Service Spatial Data Standard

Theme_Keyword: Transportation

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: AADT

Theme_Keyword: Annual Average Daily Traffic

Theme_Keyword: Trucks

Theme_Keyword: Traffic Counts

Theme_Keyword: Speed Data

Theme_Keyword: GIS

Place:

Place_Keyword_Thesaurus: Geographic Names Information System

Place_Keyword: Chittenden, county

Place_Keyword: Vermont

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 1944

Temporal_Keyword: 2007

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Chittenden County MPO

Contact_Person: Daryl Benoit

Contact_Position: Transportation Planner

Contact_Address:

Address_Type: mailing and physical address

Address:

CCMPO, 30 Kimball Ave.

City: South Burlington

State_or_Province: Vermont

Postal_Code: 05403

Country: U.S.

Contact_Voice_Telephone: 802.660.4071

Contact_Facsimile_Telephone: 802.660.4079

Contact_Electronic_Mail_Address: dbenoit@ccmpo.org

Hours_of_Service: 9a-5p, Mon.-Fri.

Browse_Graphic:

Browse_Graphic_File_Name: <http://www.ccmpo.org/data/ccmpo_aadt_metadata.html>

Browse_Graphic_File_Description: JPEG

Browse_Graphic_File_Type: Web Page

Data_Set_Credit:

CCMPO Annual Traffic Count Program, 1994-2007. VTrans Traffic Counts, 1944-2005. It is likely that Joe Segale of CCMPO began to compile the locations of the traffic count stations and AADT totals sometime in the late 1990's. CCMPO personnel subsequently coordinating work on the database include - Dave Roberts, Senior Transportation Planner (2000-2002), Daryl Benoit, Transportation Planner (2002-2007). Transportation Technicians and Interns included - Peter Burch (2001), Casey Garvey (2000-2002), Jason S. Sobel (2001-2002), Brian Bertsch (2000-2002), JEB (2002), Janine White (2003), April Lagacy (2003), Erin Flynn (2003-2004), Justin Tougas (2003), David Donahue (2004), Michael T. Birkby (2004), Hohai Dong (2004-2005), Brian Fernandes (2005), Marcy Brownell (2005), Anna Lisius (2005), Evan Kamein (2006), Laura J. Stone (2006), Katherine Rich (2006), Taylor Newton (2006-2007), Matthew Smith (2007), Courtney Wakem (2007), Ryan Groesbeck (2007). Other contributors included - Maureen Carr, VTrans (2003-2004) who provided AOT derived Truck data for 1994-2002, and John Blodgett, VTrans (2004) who provided historical AADT data dating back to 1944.

Native_Data_Set_Environment:

ESRI Shapefile, Microsoft Excel file, Text/Plain (Comma-Delimited) file

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

AADT ~ A key statistical indicator for roadway counts, known as the "Annual Average Daily Traffic", or AADT, has been developed to represent the average amount of vehicular traffic in both directions of travel, passing on a given point of road, over a 24-hour period, on a typical day of the year.

AADT figures for CCMPO Traffic Count Stations were calculated for a 7-day week (including weekend days). The final AADT figure used for public distribution has been multiplied by a seasonal adjustment coefficient (either outlined in the annually published VTrans "REDBOOK", or derived by CCMPO using data from internally selected Continuous Traffic Count sites). The resulting AADT is then rounded according to the specifications in the "AASHTO Guidelines for Traffic Data Programs", where: Volumes of 0 to 999 Round to the nearest 10, Volumes of 1,000 to 9,999 Round to the nearest 100, and Volumes >= 10,000 Round to the nearest 1,000.

AADT figures for VTrans Stations contain both actual and estimated volumes for each traffic section along a particular route. The methodology for deriving volumes follows - 1. An actual count, if one was available for the particular road segment. 2. In the case of an estimated count, if a coverage count was taken in a nearby section, the growth rate for that segment was applied to the section. 3. If no counts were taken in the vicinity, the statewide average growth rate for the appropriate class of road was applied, or the relationship of adjacent section(s) actual counts to appropriate turning movement. In compliance with the Traffic Monitoring Guide, the following rounding procedures are used in this data for actual and estimated 1996 AADTs - if count is greater than 1000, round to nearest 10. If count is less than 1000 round to nearest 100.

The attributes have been double-checked against the CCMPO AADT Calculation spreadsheet (CCMPO_AADT_Calculations.xls), the VTrans - '2003 Route Logs', the VTrans - 'Automatic Traffic Recorder Station History 1975 -2003' spreadsheet, Historical AADT for the 15 full-year counters in operation before 1990 from John Blodgett of Program Development, Vermont Agency of Transportation, and the VTrans - 'Automatic Vehicle Classification History 1994-2003' spreadsheet obtained from Maureen Carr at the Traffic Research Unit of the Technical Services Division at the Vermont Agency of Transportation.

85TH PERCENTILE SPEED ~ The maximum speed at which 85% vehicles are travelling.

10 MPH PACE SPEED ~ 10 mph range in which the majority of cars are traveling.

MEAN SPEED ~ Average Speed.

CLASS OF TOWN HIGHWAY ~ Class 1 town highways are the sections of state routes that continue through larger villages or cities and which carry a state highway route number. Class 2 town highways are those town highways selected as the most important highways in each town. As far as practicable they shall be selected with the purposes of securing trunk lines of improved highways from town to town and to places which by their nature have more than normal amount of traffic. The minimum standards for class 3 highways are a highway negotiable under normal conditions all seasons of the year by a standard manufactured pleasure car. This would include but not be limited to sufficient surface and base, adequate drainage, and sufficient width capable to provide winter maintenance. Class 4 town highways are all other town highways.

HIGHWAY FUNCTIONAL CLASSIFICATION ~ 0 - Not part of Functional Classification System, 1 - Rural Principal Arterial - Interstate, 2 - Rural Principal Arterial, 4 - Rural Principal Arterial - Other (not other freeway); not a standard federal code, 6 - Rural Minor Arterial, 7 - Rural Major Collector, 8 - Rural Minor Collector, 9 - Rural Local, 11 - Urban Principal Arterial - Interstate, 12 - Urban Principal Arterial - Other Freeway, 14 - Urban Principal Arterial - Other, 16 - Urban Minor Arterial, 17 - Urban Collector, 19 - Urban Local.

Logical_Consistency_Report:

This database consists of data retrieved and processed from Automatic Traffic Recorder (ATR) units utilised during CCMPO's & VTrans's annual Traffic Count Programs (conducted during non-winter months). It is expected that the database will be updated at least annually until either fixed-roadway transportation systems or digital database technology are rendered obsolete...

Completeness_Report:

Counts are not collected for each location every year, except for the VTrans Continuous Traffic Count Stations (CTC).

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Most of the Points collected for this database have been translated from verbal descriptions on the VTrans Route Logs, or hand-drawn maps from the annual CCMPO Count Manifests. Points entered into the geospatial shapefile "CCMPO_AADT"

Lineage:

Source_Information:

Source_Scale_Denominator: N/A

Type_of_Source_Media: computer program

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19440000

Beginning_Time: Unknown

Ending_Date: 20071201

Ending_Time: Unknown

Source_Currentness_Reference: Publication Date

Source_Citation_Abbreviation: ATR

Source_Contribution:

This data has been obtained from Automatic Traffic Recorders (ATRs) used during the annual CCMPO Traffic Count Program starting in 1994. Additional processed ATR (AADT) data from VTrans has been added to this database. The lineage of this orignal database has not been documented. It is likely that it was started by Joe Segale in the 1990's.

Source_Information:

Source_Scale_Denominator: N/A

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19440000

Ending_Date: 20020000

Source_Currentness_Reference: Publication Date

Source_Citation_Abbreviation: Traffic Data Electronic Publications

Source_Contribution: Traffic Data Electronic Publications

Process_Step:

Process_Description:

Consilidated VTrans counts with CCMPO counts into one geospatial database, conducted a number of Quality Control checks, and documented the database using FGDC & Dublin Core metadata formats.

Source_Used_Citation_Abbreviation: CCMPO_AADT

Process_Date: 20040130

Source_Produced_Citation_Abbreviation: CCMPO_AADT

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Daryl Benoit

Contact_Organization: Chittenden County MPO

Contact_Position: Transportation Planner

Contact_Address:

Address_Type: mailing and physical address

Address: 30 Kimball Ave.

City: South Burlington

State_or_Province: Vermont

Postal_Code: 05403

Country: U.S.

Contact_Voice_Telephone: 802.660.4071

Contact_Facsimile_Telephone: 802.660.4079

Contact_Electronic_Mail_Address: dbenoit@ccmpo.org

Hours_of_Service: 9a-5p, Mon.-Fri.

Process_Step:

Process_Description:

Corrected data coding errors for Westford (d283), and I-89 Richmond (d053). The 1992 AADT for d053 was too high to be possible... This error exists in VAOT's distributed traffic history database.

Source_Used_Citation_Abbreviation: CCMPO_AADT

Process_Date: 20040225

Source_Produced_Citation_Abbreviation: CCMPO_AADT

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Daryl Benoit

Contact_Organization: CCMPO

Contact_Position: Transportation Planner

Contact_Address:

Address_Type: mailing and physical address

Address: 30 Kimball Ave.

City: South Burlington

State_or_Province: VT

Postal_Code: 05403

Country: US

Contact_Voice_Telephone: 802.660.4071

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference:

Most of the Points collected for this database have been translated from verbal descriptions on the VTrans Route Logs, or hand-drawn maps from the annual CCMPO Count Manifests.

Direct_Spatial_Reference_Method: Point

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 1153

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 (USGS), 5526 (ESRI)

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.99996

Longitude_of_Central_Meridian: -072.500000

Latitude_of_Projection_Origin: +42.500000

False_Easting: 500000

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.001

Ordinate_Resolution: 0.001

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 1 / 298.25722210

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Point

Entity_Type_Definition: Location

Entity_Type_Definition_Source: CCMPO

Attribute:

Attribute_Label: AADT_ID

Attribute_Definition: Database Unique Record ID

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: STA_ID

Attribute_Definition: Traffic Count Station ID Number

Attribute_Definition_Source: CCMPO & VTrans

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name: Site location Identifiers

Codeset_Source: CCMPO & VTrans

Attribute:

Attribute_Label: TOWN

Attribute_Definition: Town Name Abbreviation ~

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: FIPS

Attribute_Definition: //www.census.gov/geo/www/fips/fips.html

Attribute_Definition_Source: U.S. Census Bureau

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name: FIPS codes

Codeset_Source: U.S. Census Bureau

Attribute:

Attribute_Label: CNTYEAR

Attribute_Definition: Year of latest known Count.

Attribute_Definition_Source: N/A

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: LOCATION

Attribute_Definition: Site location text description

Attribute_Definition_Source: CCMPO & VTrans

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: C1944 ... C2007

Attribute_Definition:

Annual Average Daily Traffic (AADT), by year. It is a average amount of vehicular traffic in both directions of travel, passing on a given point of road, over a 24-hour period, on a typical day of the year.

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: T1994 ... T2007

Attribute_Definition:

Annual Average Daily Truck Traffic (AADTT), by year. This truck traffic includes all trucks for classes '2 AXLE 6 TIRE' through 'GREATER THAN 6 AXLE MULTI' and the 'NOT CLASSED' Vehicles for CCMPO data. VTrans Truck data was obtained from a modified "Automatic Vehicle Classification History" spreadsheet, obtained from the Traffic Research Unit at VTrans.

Attribute_Definition_Source: CCMPO & VTrans

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: ZT2000 ... ZT2007

Attribute_Definition:

5 Axle Truck AADT, by year. This data for this item has only been summarised for the CCMPO Traffic counts.

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Unrepresentable_Domain: N/A

Attribute:

Attribute_Label: FUNC_CL

Attribute_Definition: U.S. DOT/FHWA Functional Classification Codes

Attribute_Definition_Source: FHWA

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0-99 - Highway Functional Classification

Enumerated_Domain_Value_Definition: See; "Attribute Accuracy" above

Enumerated_Domain_Value_Definition_Source: FHWA

Attribute:

Attribute_Label: RD_CLASS

Attribute_Definition:

Class of Town Highway where the Traffic Count Station exists.

Attribute_Definition_Source: Vermont Agency of Transportation, Technical Services Division

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:

1 - Class I Town Highway, 2 - Class II, 3 - Class III, 4 Class IV

Enumerated_Domain_Value_Definition: See; "Attribute Accuracy" above

Enumerated_Domain_Value_Definition_Source: Vermont Agency of Transportation, Technical Services Division

Attribute:

Attribute_Label: SPD_LMT

Attribute_Definition:

Posted Speed Limit obtained from field/site during traffic count.

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Attribute:

Attribute_Label: AB_DIR

Attribute_Definition: Directional Information of traffic count.

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

EB - EastBound Traffic, WB - WestBound Traffic, NB - NorthBound Traffic, SB SouthBound Traffic

Codeset_Source: See; Attribute Accuracy above

Attribute:

Attribute_Label: 85TH_A_2000 ... 85TH_A_2007

Attribute_Definition:

85th Percentile Speed in A-Direction (see Attribute 'AB_DIR').

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Attribute:

Attribute_Label: 85TH_B_2000 ... 85TH_B_2007

Attribute_Definition:

85th Percentile Speed in B-Direction (see Attribute 'AB_DIR').

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Attribute:

Attribute_Label: PACE_A_2000 ... PACE_A_2007

Attribute_Definition:

10 MPH Pace Speed in A-Direction (see Attribute 'AB_DIR').

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Attribute:

Attribute_Label: PACE_B_2000 ... PACE_B_2007

Attribute_Definition:

10 MPH Pace Speed in B-Direction (see Attribute 'AB_DIR').

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Attribute:

Attribute_Label: ASPD_A_2000 ... ASPD_A_2007

Attribute_Definition: Average Speed in A-Direction (see Attribute 'AB_DIR').

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Attribute:

Attribute_Label: ASPD_B_2000 ... ASPD_B_2007

Attribute_Definition: Average Speed in B-Direction (see Attribute 'AB_DIR').

Attribute_Definition_Source: CCMPO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Speed in MPH

Enumerated_Domain_Value_Definition: See; Attribute Accuracy above

Enumerated_Domain_Value_Definition_Source: CCMPO

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Daryl Benoit

Contact_Organization: Chittenden County MPO

Contact_Position: Transportation Planner

Contact_Address:

Address_Type: mailing and physical address

Address:

CCMPO, 30 Kimball Ave.

City: South Burlington

State_or_Province: Vermont

Postal_Code: 05403

Country: U.S.

Contact_Voice_Telephone: 802.660.4071

Contact_Facsimile_Telephone: 802.660.4079

Contact_Electronic_Mail_Address: dbenoit@ccmpo.org

Hours_of_Service: 9a-5p, Mon.-Fri.

Resource_Description: CCMPO_AADT

Distribution_Liability:

This data is public record. CCMPO and/or VTrans are not responsible for any errors, liabilities, or misuse of the data.

Metadata_Reference_Information:

Metadata_Date: 20080117

Metadata_Review_Date: 20080117

Metadata_Future_Review_Date: 20090101

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Daryl Benoit

Contact_Organization: Chittenden County MPO

Contact_Position: Transportation Planner

Contact_Address:

Address_Type: mailing and physical address

Address:

CCMPO, 30 Kimball Ave.

City: South Burlington

State_or_Province: Vermont

Postal_Code: 05403

Country: U.S.

Contact_Voice_Telephone: 802.660.4071

Contact_Facsimile_Telephone: 802.660.4079

Contact_Electronic_Mail_Address: dbenoit@ccmpo.org

Hours_of_Service: 9a-5p, Mon.-Fri.

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998