Traffic Counts - Annual Average (by Count Station) - MWCOG

Traffic Counts - Annual Average (by Count Station)
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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.

Data and Resources

Additional Info

Field Value
Author MWCOG GIS Team
Maintainer J. Albert Bowden II
Last Updated September 12, 2017, 00:16 (UTC)
Created April 9, 2017, 18:24 (UTC)