This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. It also includes a list of each Interstate and Primary highway segment with the estimated Annual Average Week Day Traffic (AAWDT) for that segment. It includes data from 1986 to 2023. Please note that traffic volume data here are bidirectional volume. The latest directional and bidirectional traffic volume data are also available in TMPD’s Pathways for Planning (P4P), https://vdotp4p.com.Data Updated: Spring 2024 ADT Quality Codes: 1 A Average of Complete Continuous Data 2 B Average of Selected Continuous Count Data 6 F Factored Short Term Traffic Count Data 7 G Factored Short Term Traffic Count Data with Growth Element 8 H Historical Estimate 13 M Manual Uncounted Estimate 14 N AADT of Similar Neighboring Traffic Link 15 O Provided By External Source 18 R Unfactored 24 Hour Traffic Count 20 T ITE Trip Generation Estimate 24 X Not Available Class Quality Codes: 1 A Average of Complete Continuous Data 2 B Average of Selected Continuous Count Data 3 C Short Term Classified Traffic Count 4 D Corrected Short Term Classified Traffic Count 6 F Factored Short Term Traffic Count Data 7 G Corrected Factored Short Term Traffic Count Data 8 H Historical Estimate 13 M Mass Collective Average 14 N Classification of Similar Neighboring Traffic Link 24 X Not Available Pop Up ConfigurationAverage Daily Traffic: {ADT}-----------------------------------------------------------Route Name: {ROUTE_COMMON_NAME}Route Type: {RTE_TYPE_CD}Begin Location: {START_LABEL}End Location: {END_LABEL}Average Annual Weekday Traffic: {AAWDT}View in attribute table for more details...

This dataset provides information about 2023 Annual Average Daily Traffic (AADT) Volume Estimates by Section of Route in Fairfax County

This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. It also includes a list of each Interstate and Primary highway segment with the estimated Annual Average Week Day Traffic (AAWDT) for that segment. It includes data from 1985 to 2020. Please note that traffic volume data here are bidirectional volume. The latest directional and bidirectional traffic volume data are also available in TMPD’s Pathways for Planning (P4P), https://vdotp4p.com.

This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. It also includes a list of each Interstate and Primary highway segment with the estimated Annual Average Week Day Traffic (AAWDT) for that segment. It includes data from 1985 to 2018

Data Updated: Nov 2019 Please note that traffic volume data here are bidirectional volume. The latest directional and bidirectional traffic volume data are also available in TMPD’s Pathways for Planning (P4P), https://vdotp4p.com.

This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. It also includes a list of each Interstate and Primary highway segment with the estimated Annual Average Week Day Traffic (AAWDT) for that segment. It includes data from 1986 to 2022. Please note that traffic volume data here are bidirectional volume. The latest directional and bidirectional traffic volume data are also available in TMPD’s Pathways for Planning (P4P), https://vdotp4p.com.

This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. It also includes a list of each Interstate and Primary highway segment with the estimated Annual Average Week Day Traffic (AAWDT) for that segment. It includes data from 1986 through 2024. Please note that traffic volume data here are bidirectional volume. The latest directional and bidirectional traffic volume data are also available in TMPD’s Pathways for Planning (P4P), https://vdotp4p.com.Data Currency: Through December 30, 2024 ADT Quality Codes: 1 A Average of Complete Continuous Data 2 B Average of Selected Continuous Count Data 6 F Factored Short Term Traffic Count Data 7 G Factored Short Term Traffic Count Data with Growth Element 8 H Historical Estimate 13 M Manual Uncounted Estimate 14 N AADT of Similar Neighboring Traffic Link 15 O Provided By External Source 18 R Unfactored 24 Hour Traffic Count 20 T ITE Trip Generation Estimate 24 X Not Available Class Quality Codes: 1 A Average of Complete Continuous Data 2 B Average of Selected Continuous Count Data 3 C Short Term Classified Traffic Count 4 D Corrected Short Term Classified Traffic Count 6 F Factored Short Term Traffic Count Data 7 G Corrected Factored Short Term Traffic Count Data 8 H Historical Estimate 13 M Mass Collective Average 14 N Classification of Similar Neighboring Traffic Link 24 X Not Available Pop Up ConfigurationAverage Daily Traffic: {ADT}-----------------------------------------------------------Route Name: {ROUTE_COMMON_NAME}Route Type: {RTE_TYPE_CD}Begin Location: {START_LABEL}End Location: {END_LABEL}Average Annual Weekday Traffic: {AAWDT}View in attribute table for more details...

This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. It also includes a list of each Interstate and Primary highway segment with the estimated Annual Average Week Day Traffic (AAWDT) for that segment. It includes data from 1986 to 2021. Please note that traffic volume data here are bidirectional volume. The latest directional and bidirectional traffic volume data are also available in TMPD’s Pathways for Planning (P4P), https://vdotp4p.com.Data Updated: Nov 2022 ADT Quality Codes: 1 A Average of Complete Continuous Data 2 B Average of Selected Continuous Count Data 6 F Factored Short Term Traffic Count Data 7 G Factored Short Term Traffic Count Data with Growth Element 8 H Historical Estimate 13 M Manual Uncounted Estimate 14 N AADT of Similar Neighboring Traffic Link 15 O Provided By External Source 18 R Unfactored 24 Hour Traffic Count 20 T ITE Trip Generation Estimate 24 X Not AvailableClass Quality Codes: 1 A Average of Complete Continuous Data 2 B Average of Selected Continuous Count Data 3 C Short Term Classified Traffic Count 4 D Corrected Short Term Classified Traffic Count 6 F Factored Short Term Traffic Count Data 7 G Corrected Factored Short Term Traffic Count Data 8 H Historical Estimate 13 M Mass Collective Average 14 N Classification of Similar Neighboring Traffic Link 24 X Not Available Pop Up ConfigurationAverage Daily Traffic: {ADT}-----------------------------------------------------------Route Name: {ROUTE_COMMON_NAME}Route Type: {RTE_TYPE_CD}Begin Location: {START_LABEL}End Location: {END_LABEL}Average Annual Weekday Traffic: {AAWDT}View in attribute table for more details...

Annualized count data for the TPB modeled region. Data are collected from state DOTs and processed by TPB staff.Layers IncludedAnnualized Traffic Volumes Historic AADT 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 ColumbiaAADT 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).MarylandAADT 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.VirginiaAADT 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 VirginiaAADT estimates since 1999 are based on counts taken at the station locations in the file and reported by WV DOT.Traffic Counts by Network LinkThis layer was created by assigning the state DOT traffic counting station locations to their corresponding COG/TPB network links. Facility names and route numbers were added to the network. AAWDT Average Annual Weekday Daily Traffic (2010 - 2021) and Count Type (2010 - 2021) are included as well as Count Year (last year the link was counted). Count Type denotes the source of the count. Please note: for bi-directional roads, the AADT and AAWDT values for each location were divided in two and assigned to both network links that represent the Anode-Bnode direction and the Bnode-Anode direction. Therefore, in most cases the AADT/AAWDT values associated with an individual link in this network will be half of the AADT/AAWDT values reported at the associated individual count station point. Traffic Counts by External StationThis 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 2007 through 2023. 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 of traffic specific to Baltimore. AADT Average Annual Daily Traffic (1986 – 2023) and AAWDT Average Annual Weekday Daily Traffic (2007 – 2023) are included. Count Type denotes when the location was last counted. West Virginia does not report AAWDT, so the AADT values were increased by 5% to arrive at AAWDT estimates in West Virginia.

This dataset provides information about 2023 Annual Average Daily Traffic (AADT) Volume Estimates by Section of Route in Arlington County

This dataset provides information about 2021 Annual Average Daily Traffic (AADT) Volume Estimates by Section of Route in Princess Anne Maintenance Area