On the Road

Highway Use And Characteristics

The Highway Information Services Division (HISD) is responsible for maintaining a current data inventory of the highway system, drafting and dissemination of maps, GIS implementation and development, and the collection, analysis, reporting and distribution of Traffic Monitoring System (TMS) data. HISD serves the entire agency and provides highway information, mapping information, and TMS data to the State of Maryland, local governments, the public and the Federal government. The Federal Highway Administration uses highway information from the road inventory database to apportion Federal funding to the State of Maryland. Other internal and external units receive data and information from this group.

The products below are in Adobe Acrobat format. If you have Acrobat installed on your computer, click the report you would like to view.

Traffic Monitoring System
A summary of the traffic volume data collected throughout Maryland.
Traffic Volume Maps
Average Annual Daily Traffic (AADT) on state roads.
Mileage Inside the Municipalities Reports
Mileage information inside a municipality.
Annual Highway Mileage Reports
Various Mileage Reports
Highway Location Reference
Provides a method for uniquely identifying roadway locations (milepoints) and to identify data elements that are most commonly requested.
Annual Vehicle Miles of Travel
Travel estimates for each county by Functional Class.
Highway Maps
Mapping products available from SHA.
Maryland's Interstate and Beltway Mileage
Summarizes the mileage of the Baltimore Beltway, Capital Beltway and The Interstate system.
Highway System Mileage by Year
Mileage by county on the SHA, Toll, County, and Municipal roadway systems for the years 1980 to the present.
Highway Indicators Statistical Report
A summary of significant activities of State Highway offices involved in development, operations, and planning functions.

Disclaimer: The information in these documents are provided as a public service by the Maryland State Highway Administration (MSHA). SHA makes no claims, promises or guarantees about the accuracy, completeness, or adequacy of the contents of these documents and expressly disclaims liability for any errors and omissions in the contents of these documents. All route, traffic, and travel data being made available by MSHA are developed to support internal uses, primarily transportation planning. Any and all data are provided "as is" with the understanding that no warranty of any kind, implied, expressed or statutory, is given with respect to the contents of these documents. Any and all conclusions or products derived from the data are the sole responsibility of the user. Information presented on this web site is considered public information and may be distributed or copied.