| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Ijamsville,
                MD Frederick Co. United States | Royal Saint Andrews Pl. / Quail Creek Pl. (39.38039, -77.30788) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Ballenger Creek,
                MD Frederick Co. United States | Newton Dr. / Hiteshow Dr. / Cheatham Way (39.36597, -77.44595) | Other Existing | Unknown Unknown | 5 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Frederick,
                MD Frederick Co. United States | Jefferson Station Blvd. / Jefferson Commons Way (39.39479, -77.44916) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2015 | Year Completed estimated (2013-2015). | 
| Ballenger Creek,
                MD Frederick Co. United States | Jefferson Technology Pkwy. / (unknown) (39.39256, -77.45666) | Unknown Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / West Wing Way (39.50248, -77.65503) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / Midlothian Way (39.50117, -77.65254) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / East Wing Way (39.50047, -77.65002) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Salisbury,
                MD Wicomico Co. United States | Oakwood Dr. / Woodbrooke Dr. (38.36236, -75.55193) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2008 | Right-turn arrow on all entries. Year Completed estimated (2007-2009). | 
| Summerfield,
                MD Prince George's Co. United States | Ridgefield Blvd. / Chatsfield Way / Valley Trail Ln. (38.89834, -76.86172) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Capitol Heights,
                MD Prince George's Co. United States | Hampton Park Blvd. (38.87175, -76.85022) | Roundabout Existing | All-Way Yield Unknown | 2 Approaches 0 Driveways 57.9120 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2007 | Yield signs but no entrance line or yield lines. | 
| Capitol Heights,
                MD Prince George's Co. United States | Ritchie Station Ct. / (mall circulation road) (38.86528, -76.84986) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2010-2011). | 
| Forestville,
                MD Prince George's Co. United States | Donnell Pl. (38.84109, -76.88405) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Saint Charles,
                MD Charles Co. United States | Devongate St. / Malvern St. / Promenade Pl. (38.61057, -76.93790) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 2009 | Crosswalks adjacent to circulatory roadway. Year Completed estimated (2008-2009). | 
| Upper Marlboro,
                MD Prince George's Co. United States | Governors Park Ln. / Chancelsors Dr. (38.83526, -76.73311) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Upper Marlboro,
                MD Prince George's Co. United States | Presidential Golf Dr. / Pentland Hills Dr. (38.84025, -76.73519) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Odenton,
                MD Anne Arundel Co. United States | Sand Lens Dr. / Water Strider Way (39.02435, -76.72793) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2020 | |
| Odenton,
                MD Anne Arundel Co. United States | Meyers Station Rd. / Conway Rd. (39.02871, -76.71317) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). | 
| Gambrills,
                MD Anne Arundel Co. United States | Nancarles Dr. / Kirchner Ln. (38.98934, -76.68111) | Other Existing | Unknown Unknown | 3 Approaches 2 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Odenton,
                MD Anne Arundel Co. United States | Town Center Blvd. / Odenton Landing Way / Odenton Ave. (39.09810, -76.70709) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2018 | Year Completed estimated (2017-2018). | 
| Glen Burnie,
                MD Anne Arundel Co. United States | Hancock Ln. / Mayflower Cir. (39.14357, -76.62097) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Pasadena,
                MD Anne Arundel Co. United States | Ashberry Ln. / Dewberry Ln. / Dewberry Cir. (39.13099, -76.59326) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Pasadena,
                MD Anne Arundel Co. United States | Pinehurst Harbour Way (39.12192, -76.43538) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Salisbury,
                MD Wicomico Co. United States | Legacy Way / Sawback Ln. (38.36523, -75.62309) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Ellicott City,
                MD Howard Co. United States | Coventry Court Dr. (39.27862, -76.87340) | Other Existing | Unknown Unknown | 2 Approaches 2 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Ellicott City,
                MD Howard Co. United States | Lancelot Cross / Butterfruit Way / Argent Path / Stardust Ln. (39.28522, -76.90384) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 57.9120 | Other (At-Grade) Single-Lane | 1998 | Year Completed estimated (1993-2002). | 
| Sandy Spring,
                MD Montgomery Co. United States | Alexander Manor Dr. / Red Tail Ct. / Halex Hill Ct. (39.13149, -77.01778) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Sandy Spring,
                MD Montgomery Co. United States | Friends House Rd. / Quaker Ln. / (parking) (39.14071, -77.03036) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Germantown,
                MD Montgomery Co. United States | Observation Dr. / Goldenrod Ln. (39.18419, -77.24566) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2013 | Year Completed estimated (2012-2014). | 
| Germantown,
                MD Montgomery Co. United States | Crystal Rock Dr. / Century Blvd. (39.20326, -77.27356) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2015 | Striping added 2019-2021. Inconsistent lane use markings between entry and circulatory roadway. | 
| Clarksburg,
                MD Montgomery Co. United States | Little Seneca Pkwy. / Cabin Branch Ave. (39.21654, -77.28310) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2016 | Year Completed estimated (2016-2017). Striping added 2019-2021. | 
| Clarksburg,
                MD Montgomery Co. United States | Broadway Ave. / Little Seneca Pkwy. (39.21646, -77.28540) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2016 | Year Completed estimated (2015-2017). Striping added 2019-2021. | 
| Clarksburg,
                MD Montgomery Co. United States | Clarksburg Rd. / W Old Baltimore Rd. (39.21396, -77.29731) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2019-2020). | 
| Clarksburg,
                MD Montgomery Co. United States | Cabin Branch Ave. / Skimmer St. (39.22020, -77.28435) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2016 | Year Completed estimated (2015-2017). Striping added 2019-2021. | 
| Odenton,
                MD Anne Arundel Co. United States | Two Rivers Blvd. / Dragon Fly Way / Broad Wing Dr. (39.01870, -76.71985) | Unknown Existing | Unknown Unknown | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2015 | |
| Gambrills,
                MD Anne Arundel Co. United States | Grand Meadow Dr. / Ridings Way (39.00615, -76.66270) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.4632 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2017-2018). | 
| Frederick,
                MD Frederick Co. United States | Mercantile Dr. E / Rodes Cir. (39.39507, -77.44311) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Frederick,
                MD Frederick Co. United States | S East St. / (future road) (39.40599, -77.40392) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2009 | Year Completed estimated (2009-2011). East leg is stubbed for future connection. | 
| Oakland,
                MD Garrett Co. United States | Heron Circle (39.48570, -79.32376) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Mount Washington,
                MD Baltimore Co. United States | Quarry Lake Dr. / Stone Cliff Dr. (39.38398, -76.69603) | Other Existing | Other Unknown | 2 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | Uncontrolled entry on southeast leg. | |
| Mays Chapel,
                MD Baltimore Co. United States | Dipping Pond Ct. (39.44447, -76.71101) | Other Existing | Unknown Unknown | 2 Approaches 3 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Mays Chapel,
                MD Baltimore Co. United States | Ridgemont Rd. (39.45142, -76.69629) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Owings Mills,
                MD Baltimore Co. United States | Worthington Rd. / Hunters Glen (39.46145, -76.74231) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Owings Mills,
                MD Baltimore Co. United States | Foxcreek Ct. (39.46537, -76.75334) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Dunkirk,
                MD Calvert Co. United States | Ward Rd. / (entrance to park) (38.72220, -76.64529) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2021 | https://southernmarylandchronicle.com/2021/07/02/section-of-ward-road-in-calvert-to-close-for-construction/ | 
| Eden,
                MD Wicomico Co. United States | Rivermere Dr. (38.30576, -75.74862) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Olney,
                MD Montgomery Co. United States | Fox Valley Dr. / Hillcroft Dr. (39.12441, -77.07962) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | No splitter islands. | |
| Aiken's Tavern Historic District,
                MD Cecil Co. United States | Pebble Beach Dr. / Spyglass Dr. (39.61664, -75.79074) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | Parking in circulatory roadway. | |
| Baltimore,
                MD Baltimore City United States | Washington Pl. / Mount Vernon Pl. (39.29756, -76.61568) | Signalized Roundabout/Circle Existing | Signal Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | Hillsborough Dr. / Hillsborough Terrace / Forest Hills Ct. (39.41266, -77.34441) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Aiken's Tavern Historic District,
                MD Cecil Co. United States | Patriots Way / McArthur Ln. (39.62121, -75.80850) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Ellicott City,
                MD Howard Co. United States | Nightingale Ct. / Academy Rd. (39.24564, -76.79297) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Germantown,
                MD Montgomery Co. United States | Summer Oak Dr. / Summer Oak Ct. (39.16467, -77.24384) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands on two legs. | |
| Germantown,
                MD Montgomery Co. United States | Germantown Rd. / Watkins Mill Rd. / Blunt Rd. (39.19058, -77.22492) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 1999 | Right-turn bypass lane on north leg. Year Completed estimated (1993-2005). | 
| Olney,
                MD Montgomery Co. United States | Brightwood Rd. / Winding Oak Dr. / Weston Pl. (39.16065, -77.09120) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Cloverly,
                MD Montgomery Co. United States | Harbour Town Dr. / Firestone Dr. (39.12855, -76.99401) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Cloverly,
                MD Montgomery Co. United States | Firestone Dr. / Sea Island Ct. (39.12744, -76.99807) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Greenbelt,
                MD Prince George's Co. United States | Greenbelt Station Pkwy. / Stream Bank Ln. (39.00060, -76.91754) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 2014 | Crosswalks at yield line on all leg. Year Completed estimated (2013-2014). West leg opened 2016. | 
| Greenbelt,
                MD Prince George's Co. United States | Greenbelt Station Pkwy. / S Center Dr. (39.00209, -76.91666) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2017 | |
| Greenbelt,
                MD Prince George's Co. United States | Greenbelt Station Pkwy. / Stream Bank Ln. (39.00374, -76.91563) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 2017 | |
| Greenbelt,
                MD Prince George's Co. United States | Hanover Pkwy. / (unknown) (38.98589, -76.87602) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 2004 | Year Completed estimated (2002-2005). | 
| Ballenger Creek,
                MD Frederick Co. United States | McLauren Ln. / Carston Ct. / Duncan Pl. (39.36852, -77.43743) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Frederick,
                MD Frederick Co. United States | W Fagan Ln. (39.44591, -77.43047) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | E Fagan Dr. (39.44594, -77.42928) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | W Huff Blvd. (39.44689, -77.43046) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | E Huff Blvd. (39.44685, -77.42933) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | W Whitecoat Dr. (39.44784, -77.43031) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | E Whitecoat Dr. (39.44779, -77.42925) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | US 40 Alternate (Old National Pike) / MD 67 (Rothersville Rd.) / Ostertag Pass (39.49747, -77.64507) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2019 | |
| Centreville,
                MD Queen Anne's Co. United States | Symphony Way / Orchestra Pl. (39.02501, -76.06785) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frostburg,
                MD Allegany Co. United States | Heartwood Dr. / Moonlight Dr. (39.63654, -78.92720) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Annapolis,
                MD Anne Arundel Co. United States | Bywater Rd. (38.96731, -76.52788) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | Greenleese Circle (39.44847, -77.37242) | Other Existing | Unknown Unknown | 2 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Frederick,
                MD Frederick Co. United States | Synergy Way / Progress Dr. (39.43796, -77.36660) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2008 | |
| Frederick,
                MD Frederick Co. United States | Synergy Way (39.43898, -77.36665) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2010 | Year Completed estimated (2009-2011). | 
| Middletown,
                MD Frederick Co. United States | Smithfield Dr. / Layla Dr. / Hoffman Dr. (39.44814, -77.52097) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Bel Air,
                MD Harford Co. United States | Old Joppa Ct. / Hoskins Terrace (39.51380, -76.37506) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2014-2017). | 
| Pikesville,
                MD Baltimore Co. United States | Travertine Dr. (39.38721, -76.68990) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | Parking along circulatory roadway; pedestrian access to central island. | |
| Owings Mills,
                MD Baltimore Co. United States | Painters Mill Rd. / Lyons Mill Rd. (39.39425, -76.78747) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Konterra,
                MD Prince George's Co. United States | Belle Chasse Blvd. / Belle Chasse Blvd. (north) (39.07820, -76.87960) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Konterra,
                MD Prince George's Co. United States | Belle Chasse Blvd. / Belle Chasse Blvd. (southwest) (39.07731, -76.88037) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Konterra,
                MD Prince George's Co. United States | Belle Chasse Blvd. / Belle Chasse Blvd. (southeast) (39.07714, -76.87923) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Konterra,
                MD Prince George's Co. United States | Belle Chasse Blvd. / (parking) (west) (39.07512, -76.88073) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Konterra,
                MD Prince George's Co. United States | Belle Chasse Blvd. / (parking) (east) (39.07499, -76.87964) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Konterra,
                MD Prince George's Co. United States | Belle Chasse Blvd. / Belle Chasse Blvd. (south) (39.07274, -76.88060) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Laurel,
                MD Prince George's Co. United States | W Side Blvd. / (parking) (39.08512, -76.89003) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Calverton,
                MD Prince George's Co. United States | Bay Hill Dr. / Innisbrook Dr. (39.06579, -76.92532) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Aberdeen,
                MD Harford Co. United States | Heathland Trl. / Spindrift Rd. / Bentgrass Dr. (39.49427, -76.20490) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Bel Air,
                MD Harford Co. United States | English Manor Ln. / Squire Ln. / Canterbury Rd. (39.52643, -76.36371) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Flintstone,
                MD Allegany Co. United States | Lake Shore Dr. / (parking) (39.69941, -78.65115) | Unknown Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Unknown Unknown | ||
| Villages of Winterset,
                MD Baltimore Co. United States | Runnymeade Rd. / New Town Blvd. / Bon Haven Ln. (39.39893, -76.81700) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Owings Mills,
                MD Baltimore Co. United States | New Town Blvd. / Rangeford Dr. (39.40957, -76.80654) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Abingdon,
                MD Harford Co. United States | Four Seasons Dr. / Raking Leaf Dr. / Raking Leaf Dr. / Indian Summer Ct. (39.45387, -76.28951) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2006 | Painted splitter islands. Pedestrian crossings at entrance lines. Year Completed estimated (2005-2007). | 
| Ellicott City,
                MD Howard Co. United States | Academy Rd. / Hillsborough Rd. / Chews Vineyard (39.24993, -76.78913) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Columbia,
                MD Howard Co. United States | Vantage Point Rd. (39.22074, -76.85392) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Columbia,
                MD Howard Co. United States | Charter Dr. / (parking) (39.21273, -76.88310) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-Lane | 2013 | Converted from cul-de-sac. Year Completed estimated (2011-2014). | 
| Pasadena,
                MD Anne Arundel Co. United States | Creekside Village Blvd. / Oak Creek Dr. (39.16938, -76.57165) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter island on southeast leg. | |
| Linganore,
                MD Frederick Co. United States | Finn Dr. / Douglas Ave. / Huckleberry Way (39.40210, -77.29509) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Pedestrian access to central island. No splitter islands. | |
| Wormans Mill,
                MD Frederick Co. United States | Palatine Dr. / Island Grove Blvd. (39.46038, -77.38314) | Other Existing | Unknown Unknown | 3 Approaches 3 Driveways 0.0000 | Other (At-Grade) Single-Lane | Pedestrian access to central island. No splitter islands. | |
| Annapolis,
                MD Anne Arundel Co. United States | Church Circle (38.97848, -76.49269) | Other Existing | Unknown Unknown | 7 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (3+ Lane) | ||
| Annapolis,
                MD Anne Arundel Co. United States | Main St. / Randall St. (38.97746, -76.48722) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane |