Traffic Counts - Annual Average - 2006-2013 (by network link) - MWCOG

Traffic Counts - Annual Average - 2006-2013 (by network link)
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This map service is part of the TPB Regional Transportation Data Clearinghouse and contains the following datasets:

Traffic Counts - Annual Average (by Count Station) Traffic Counts - Annual Average - 2007-2014 (by network link) Traffic Counts - Annual Average - External Stations (2007-2014)

Dataset descriptions Traffic Counts - Annual Average (by Count Station)

This database contains the Annual Average Daily Traffic (AADT) estimates reported at permanent and short term counting stations in the TPB modeled region. Please note: Interstates in Virginia are typically represented by two stations (one in each direction) while Interstates in the other states are represented by one station. Therefore, the AADT estimates displayed for the stations on Virginia Intestates will be around half of the total for the directional roadway. The AADT estimates for recent years in this file are based on counts taken at the actual count station locations that are indicated by the station points. The AADT estimates for earlier years are based on volumes reported along roadway segments that the station points currently represent. Specific data sources for each state are listed below:

District of Columbia

AADT estimates since 2006 are based on counts taken at the station locations in the file for purpose of Federal HPMS reporting.

AADT estimates prior to 2006 are based on Traffic Volume maps produced by DDOT (Formerly DC DPW).

Maryland

AADT estimates since 2000 are based on counts taken at the station locations in the file and reported by MD SHA.

AADT estimates prior to 2000 are based on volumes reported by MD SHA in the Highway Location Reference documents and matched to links in the COG/TPB highway network. The volumes are shown at the count locations that currently represent those network links.

Virginia

AADT estimates since 1997 are based on counts taken at the station locations in the file and reported by VDOT.

AADT estimates prior to 1997 are based on volumes reported by VDOT in the Average Daily Traffic Volumes documents and matched to links in the COG/TPB highway network. The volumes are shown at the count locations that currently represent those network links.

West Virginia

AADT estimates since 1999 are based on counts taken at the station locations in the file and reported by WV DOT.

AADT estimates prior to 1999 are based on Traffic Volume maps produced by WV DOT.

Traffic Counts - Annual Average - 2007-2014 (by network link) This layer was created by assigning the state DOT traffic counting station locations to their corresponding COG/TPB network links. The 2010 network that was developed for model validation was used for this purpose. Facility names and route numbers were added to the network. Annualized traffic volumes for the years 2006 Field Name Field Description Station number ID for counting station Route Name Road associated with counting station Route ID Highway or Route Name (if applicable) ANode ANode for network link associated with counting station BNode BNode for network link associated with counting station Facility Type Type of Facility (Expressway, Arterial, etc.) Jurisdiction Location of counting station AADT Average Annual Daily Traffic (2006 – 2012) AAWDT Average Annual Weekday Daily Traffic (2006 – 2012) Count Type Denotes how traffic volume was calculated through 2012 are included.

Traffic Counts - Annual Average - External Stations (2007-2014) This layer was created by placing points where major facilities cross the TPB Modeled Area boundary. In some cases, the external station represents more than one facility. The facility field indicates which road or roads the station represents. AADT and AAWDT estimates at external stations are provided for 2010 through 2012. Each external station is assigned to a state DOT traffic counting station(s). An effort was made to assign stations or combinations of stations that would come closest to measuring the traffic volume on each facility as it enters/exits the region. In some cases, these volumes are measured just inside the modeled area; in other cases, the volumes are measured just outside the modeled area. The external stations around the Baltimore Beltway are exceptions to this rule. These stations all measure the traffic just south of the Baltimore Beltway in order lessen the influence Field Name Field Description ID TPB ID for external station Source Station Data source(s) for traffic volume data Facility Name(s) of road(s) associated with external station AADT Average Annual Daily Traffic (2010 – 2012) AAWDT Average Annual Weekday Daily Traffic (2010 – 2012) Count Type Denotes how traffic volume was calculated of traffic specific to Baltimore. The volumes at external stations in West Virginia were taken from the 2008 and 2011 West Virginia DOT Traffic volume maps. West Virginia does not report AAWDT, so the AADT values were increased by 5% to arrive at AAWDT estimates in West Virginia. . The table above contains attributes that appear in the layer’s popup window.

Data and Resources

Additional Info

Field Value
Source http://rtdc-mwcog.opendata.arcgis.com/datasets/fd3a40a7e317420faff13864c7b82bc7_1.geojson
Author MWCOG GIS Team
Maintainer J. Albert Bowden II
Last Updated September 12, 2017, 00:13 (UTC)
Created April 9, 2017, 18:28 (UTC)