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Maryland Annual Vehicle Miles of Travel

Metadata Updated: September 15, 2023

Annual Vehicle Miles of Travel (AVMT) represents the estimated number of miles driven on Maryland's public highways for a given year. There are two components used to estimate AVMT - traffic count data and highway mileage. Traffic count data is summarized and reported as Annual Average Daily Traffic (AADT).

AADTs are calculated from short-term (48-hour) traffic counts performed on all publicly maintained roads in Maryland (including county and municipal). These counts are factored to account for seasonal variation in traffic patterns and represent an “Average Day”.

For planning purposes, AADT's are assigned to highway segments in order to provide a picture of traffic patterns is on the highway system on an average day. Highway mileage statistics are complied annually based on mileage reports from the local jurisdictions and SHA and MDTA offices. Any mileage changes are field verified by SHA's data collections crews.

AVMT is calculated by multiplying the AADT on a road segment by the segment length. Because AADT represents Daily traffic, the result is multiplied by 365 to represent Annual Vehicle Miles of Travel. (AVMT = AADT X SECTION LENGTH X365)

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than License: No license information was provided.

Downloads & Resources


Metadata Created Date November 10, 2020
Metadata Updated Date September 15, 2023

Metadata Source

Harvested from md json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 10, 2020
Metadata Updated Date September 15, 2023
Data First Published 2017-02-24
Data Last Modified 2018-12-19
Category Transportation
Public Access Level public
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 3739bae6-8b6f-44e0-81c9-224688250b0c
Harvest Source Id ee165ef5-7b35-41a7-b3a5-5479c71b0e58
Harvest Source Title md json
Homepage URL
Source Datajson Identifier True
Source Hash 231617444ad01e6a19bdae25b70307fac101193cf2b613ebf18882027d9f7c53
Source Schema Version 1.1

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