NATIONAL SOURCE COVERAGE
What data is available?
Discovery includes city, small-town, rural and tribal systems without a population cutoff. A feed can cover several agencies or communities; feed counts are not city counts.
| Agency / source | Region | Current status | Schedule or source |
|---|---|---|---|
| Frederick County TransIT | Maryland | Schedule available | Browse routes ↗ |
| St. Mary's Transit System (STS) | Maryland | Included in another feed | Browse routes ↗ |
| Allegany County Transit | Maryland | Schedule available | Browse routes ↗ |
| Maryland Transit Administration | Maryland | Schedule available | Browse routes ↗ |
| Ocean City Transportation | Maryland | Schedule available | Browse routes ↗ |
| Delmarva Community Transit | Maryland | Source schedule has expiredPublished service ends 20220228 | Source catalog ↗ |
| Bethesda Circulator | Maryland | Source requires attention | Source catalog ↗ |
| rabbittransit | Maryland | Schedule available | Browse routes ↗ |
| Harbor Connector | Maryland | Schedule available | Browse routes ↗ |
| Queen Anne's County Ride | Maryland | Schedule available | Browse routes ↗ |
| Charles County VanGo | Maryland | Schedule available | Browse routes ↗ |
| Annapolis Transit | Maryland | Source schedule has expiredPublished service ends 20260930 | Source catalog ↗ |
| Shore Transit | Maryland | Schedule available | Browse routes ↗ |
| BWI Thurgood Marshall Airport (BWI) Shuttle | Maryland | Source schedule has expiredPublished service ends 20221231 | Source catalog ↗ |
| Baltimore Water Taxi | Maryland | Source requires attention | Source catalog ↗ |
| Cecil Transit | Maryland | Schedule available | Browse routes ↗ |
| Prince George's County (The Bus) | Maryland | Schedule available | Browse routes ↗ |
| Harford Transit LINK | Maryland | Schedule available | Browse routes ↗ |
| Anne Arundel County | Maryland | Schedule available | Browse routes ↗ |
| Regional Transportation Agency of Central Maryland (RTA) | Maryland | Schedule available | Browse routes ↗ |
| Washington County Transit | Maryland | Schedule available | Browse routes ↗ |
| Maryland Transit Administration | Maryland | Schedule available | Browse routes ↗ |
| Charm City Circulator | Maryland | Schedule available | Browse routes ↗ |
| Carroll Transit System | Maryland | Schedule available | Browse routes ↗ |
| Saint Maryʼs Transit System | Maryland | Schedule available | Browse routes ↗ |
| Maryland Transit Administration Metro Subway | Maryland | Schedule available | Browse routes ↗ |
| Towson Loop | Maryland | Schedule available | Browse routes ↗ |
| Calvert County Public Transportation | Maryland | Source requires attention | Official agency information ↗ |
| Montgomery County Department of Transportation (Ride On) | Maryland | Schedule available | Browse routes ↗ |
Additional official agency directory
The BTS National Transit Map agency directory also includes small, rural and tribal operators. This reference snapshot is from September 2025; it does not verify current schedules. Use the official links when a current feed is unavailable.
| Transit agency | Headquarters | Directory information | Official information |
|---|---|---|---|
| MTA (MTA) | Baltimore, MD | Full Reporter | Official agency ↗ |
| Allegany County Transit (ACT) | Cumberland, MD | Rural Reporter | Official agency ↗ |
| TransIt Services of Frederick | Frederick, MD | Full Reporter | Official agency ↗ |
| PGM VanGO | La Plata, MD | Full Reporter | Official agency ↗ |
| Cecil Transit (DCS) | Elkton, MD | Reduced Reporter | Official agency ↗ |
| Mayor and City Council Town of Ocean City (OCT) | Ocean City, MD | Rural Reporter | Official agency ↗ |
| County Ride (QAC DOA) | Centreville, MD | Reduced Reporter | Official agency ↗ |
| Charm City Circulator (CCC) | Baltimore, MD | Full Reporter | Official agency ↗ |
| Regional Transportation Agency of Central Maryland (RTA) | Annapolis Junction, MD | Full Reporter | Official agency ↗ |
| Annapolis Transit | Annapolis, MD | Reduced Reporter | Official agency ↗ |
| Washington County Transit (WCT) | Hagerstown, MD | Reduced Reporter | Official agency ↗ |
| Carroll Transit System (CTS) | Westminster, MD | Reduced Reporter | Official agency ↗ |
| Shore Transit | Salisbury, MD | Full Reporter | Official agency ↗ |
| Ride On (MCDOT) | Rockville, MD | Full Reporter | Official agency ↗ |
| Prince George's County Transit/TheBus | Upper Marlboro, MD | Full Reporter | Official agency ↗ |
| St. Mary's Transit System (STS) | California, MD | Reduced Reporter | Official agency ↗ |
| Anne Arundel County | Annapolis, MD | Full Reporter | Official agency ↗ |
| Calvert County Public Transportation (CCPT) | Prince Frederick, MD | Reduced Reporter | Official agency ↗ |
| Harford Transit LINK (HTL) | Bel Air, MD | Reduced Reporter | Official agency ↗ |
| Baltimore County Department of Public Works Transportation | Towson, MD | Reduced Reporter | Official agency ↗ |
| Delmarva Community Transit (DCT) | Denton, MD | Rural Reporter | Official agency ↗ |
| Delmarva Community Transit (DCT) | Cambridge, MD | Rural Reporter | Official agency ↗ |
| Delmarva Community Transit | , MD | Unclassified | Official agency ↗ |