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Highway Performance Monitoring System (HPMS)

The HPMS is a national road inventory database. It is the Federal government’s official source of data on the performance, condition, use, extent and operating characteristics of the Nation’s public road mileage as certified by the State’s Governors.


  • US Route 50 in Wicomic County

    obtained through SHA Visidata application


US Route 50 in Wicomic County

obtained through SHA Visidata application



HPMS Products and Services

Mileage and Travel Summaries
Federal Highway Administration (FHWA) Links

How HPMS data is used

HPMS data is used as a planning tool;
  • To assess the performance of the nation's highways,
  • To identify travel trends and future transportation forecasts,
  • For the annual Federal Highway Administration's (FHWA) Highway statistics publications and the biennial Conditions and Performance Report to Congress on the State of the Nation's Highways,
  • For the apportionment of Federal-Aid highway funds to the states.



How HPMS data is maintained

The Maryland State Highway Administration's (SHA) Data Services Engineering Division (DSED) is responsible for compiling and reporting the annual HPMS data submission to the FHWA. To meet HPMS reporting requirements, DSED maintains a road inventory database and corresponding Geographical Information Systems (GIS) centerline data which represents all public road mileage in Maryland.


Changes to State maintained highways are tracked internally throughout each year through highway construction projects and access permits issued by SHA and the Maryland Transportation Authority (MdTA).

Changes to the county and municipal (local) government maintained roads are identified through an annual road improvement reporting process based on the following schedule;
  • September - SHA sends a road improvements package to the counties and municipalities requesting a list of updates and changes to their road system,
  • December 1 - Deadline for counties and municipalities to return the improvements package to SHA,
  • November - April - Improvements and changes reported by counties and municipalities are field verified by SHA road inventory crews,
  • December - May - SHA technicians update the road inventory database, GIS centerline and Linear Referencing System (LRS) to reflect the reported changes, and prepare data for HPMS submission by June 15.


HPMS and GIS

As a result of the new Federal surface transportation funding program, which was signed into law in 2012, the HPMS GIS reporting requirements were expanded to include all publicly maintained roads and dual carriageways to represent divided highways beginning with the submission of 2013 data in June 2014. This new requirement is driving SHA to expand current business processes and to coordinate more closely with local jurisdictions.


  • Baltimore City and Beltway map

    obtained through DSED eGIS web Application


Baltimore City and Beltway map

obtained through DSED eGIS web Application


As part of this effort, SHA is working to streamline the HPMS reporting process for the local governments by leading the One Maryland One Centerline project. The goal of this project is to create a seamless, statewide, GIS roadway centerline with multi-level linear referencing system (LRS) that will serve the needs of multiple state and local governmental agencies.SHA has identified three major goals for enhancing the statewide road centerline dataset;

  • Meet MAP-21 GIS reporting requirements for the HPMS submission,
  • Migrate the SHA Local Road Improvement Process from a paper process to digital leveraging the latest in GIS technology,
  • Migrate the SHA Local Road Improvement Process from a paper process to digital leveraging the latest in GIS technology.

Click here to visit the One Maryland One Centerline website

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