Roundabouts Database Index

29411 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Afonsoeiro, Setúbal Montijo Portugal	N4 (Circular Externa) / Avenida Garcia da Orta (38.70694, -8.94501)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Afonsoeiro, Setúbal Montijo Portugal	Circular Externa / Rua Antero de Quental (38.71345, -8.94616)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Afonsoeiro, Setúbal Montijo Portugal	Circular Externa / Rua das Naus (38.71601, -8.95715)	Roundabout Existing	All-Way Yield None	2 Approaches 2 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Jardia, Setúbal Montijo Portugal	N4 (Avenida Dom Manuel) / Rua das Forças Armadas / Rua Infante Dom Francisco (38.70686, -8.92771)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Shenandoah, TX Montgomery Co. United States	David Memorial Dr. / Shenandoah Park Dr. (30.19171, -95.44727)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	Right-turn-only markings in both lanes on all entries.
(unincorporated), TX Montgomery Co. United States	Woodforest Pkwy. / Woodforest Blvd. / Spyglass Park Ln. (30.27643, -95.55388)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 67.0560	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012).
Darnestown, MD Montgomery Co. United States	Schaeffer Rd. / Germantown Park Dr. / Central Park Cir. (39.15003, -77.30152)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2004	Right-turn-only lane on northeast leg. Year Completed estimated (2002-2005).
Calverton, MD Montgomery Co. United States	Fairland Rd. / Brahms Ave. / (parking) (39.07126, -76.95403)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, unspecified)	2008
Calverton, MD Montgomery Co. United States	Fairland Rd. / Marlow Farm Terr. / Musgrove Rd. (39.07004, -76.95264)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2008
Calverton, MD Montgomery Co. United States	Fairland Rd. / Galway Dr. (39.06594, -76.94436)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2008
Gaithersburg, MD Montgomery Co. United States	Washingtonian Blvd. / Rio Blvd. (39.11678, -77.20122)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1993-2002).
Gaithersburg, MD Montgomery Co. United States	Washingtonian Blvd. / Washington Blvd. (39.11773, -77.20314)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1993-2002).
(unincorporated), TX Montgomery Co. United States	Northgrove Pkwy. / Hufsmith Conroe Rd. (30.14894, -95.59330)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 83.8200	Other (At-Grade) Multilane (2 Lane, unspecified)	2016
Montgomery, AL Montgomery Co. United States	Aum Dr. / Brown Springs Rd. (32.37307, -86.17992)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2013).
Olney, MD Montgomery Co. United States	Old Baltimore Rd. / Bishops Castle Dr. (39.14878, -77.04958)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Unknown Single-Lane	2019	Painted splitter islands on major street; no splitter islands on side street.
Burtonsville, MD Montgomery Co. United States	Bentley Park Dr. / Saddle Creek Dr. (39.09674, -76.91863)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Wheaton-Glenmont, MD Montgomery Co. United States	Redspire Dr. / Tivoli Lake Blvd. (39.07315, -77.03208)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Wheaton-Glenmont, MD Montgomery Co. United States	Foggy Glen Dr. / Soaring Wing Ln. (39.08128, -77.02998)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Wheaton-Glenmont, MD Montgomery Co. United States	Poplar Run Dr. / Night Sky Dr. / Moonlight Trail Dr. (39.07862, -77.03729)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Potomac, MD Montgomery Co. United States	Brickyard Rd. / Hackamore Dr. (38.98567, -77.21274)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Potomac, MD Montgomery Co. United States	Brickyard Rd. / Horseshoe Ln. (38.99291, -77.21195)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Potomac, MD Montgomery Co. United States	Brickyard Rd. / Brent Rd. (38.99900, -77.22362)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Montgomery, AL Montgomery Co. United States	Dexter Ave. / Commerce St. / S Court St. (32.37737, -86.30919)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.2597	Other (At-Grade) Single-Lane		Parking along the outer circle; sidewalk around the centtral island. ICD estimated from Google Maps linework.
McBryde, VA Montgomery Co. United States	Broce Dr. / Lora Ln. (37.23783, -80.43405)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 20.9185	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Northside Park, VA Montgomery Co. United States	Givens Ln. / Northside Dr. (37.25358, -80.41898)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 33.2725	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Blacksburg, VA Montgomery Co. United States	Givens Ln. / Progress St. NW (37.25246, -80.42250)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.4210	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Blacksburg, VA Montgomery Co. United States	Edge Way / Orchard St. (37.23517, -80.42447)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.4280	Other (At-Grade) Single-Lane	2014	No splitter islands on three legs. ICD estimated from Google Maps linework.
Blacksburg, VA Montgomery Co. United States	Southgate Dr. / Duck Pond Dr. / Dairy Dr. (37.21647, -80.42360)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 33.2889	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Blacksburg, VA Montgomery Co. United States	Southgate Dr. / Research Center Dr. (37.21281, -80.42500)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 45.6555	Other (At-Grade) Single-Lane	2017	Through bypass lane on north leg. Right-turn bypass lane on south leg. ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Little Seneca Pkwy. / Snowden Farm Pkwy. (39.22989, -77.25280)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6795	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Snowden Farm Pkwy. / Winding Woods Way (39.22604, -77.24727)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.7086	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Little Seneca Pkwy. / Meadow Mist Rd. (39.23154, -77.24309)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.5290	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Victory Farm Dr. / Girard St. (39.14648, -77.18493)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9348	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Year Completed estimated (2005-2006). ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. (MD 121) / (outlet mall entrance) (39.22844, -77.28869)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 49.9588	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. (MD 121) / Cabin Branch Ave. (39.22689, -77.29051)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2592	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Bethesda, MD Montgomery Co. United States	Bradmoor Dr. / Roosevelt St. (38.99427, -77.11925)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3360	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2018).
Burtonsville, MD Montgomery Co. United States	Dustin Rd. / US 29 SB Offramp / Columbia Pike (39.12256, -76.92656)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.5482	Freeway Ramps (Grade-Separated) Single-Lane	2006	Fatal crash October 14, 2007.: http://www.fredericknewspost.com/sections/news/display.htm?StoryID=66411. 11861-05. ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Kentlands Blvd. / Main St. (39.12333, -77.23855)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1994	Year Completed estimated (1993-2002).
Gaithersburg, MD Montgomery Co. United States	Kentlands Blvd. / Market St. (39.12309, -77.23489)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1994	Year Completed estimated (1993-2002).
Gaithersburg, MD Montgomery Co. United States	Orchard Ridge Dr. / Mill Green Ave. (39.12559, -77.22635)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.9872	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Winter Walk Dr. / Highland Ridge Ave. (39.12807, -77.22692)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2800	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). Was cul-de-sac prior to addition of two more legs. ICD estimated from Google Maps linework.
Blacksburg, VA Montgomery Co. United States	Washington St. / Campus Dr. / Stadium Rd. (37.22169, -80.42204)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 62.7690	Other (At-Grade) Single-Lane	2005	On the campus of Virginia Tech. ICD estimated from Google Maps linework.
Lower Frederick Township, PA Montgomery Co. United States	SR 29 (Gravel Pike) / SR 73 (Big Rd.) (40.27733, -75.48040)	Roundabout Existing	All-Way Yield None	3 Approaches 3 Driveways 46.4703	Other (At-Grade) Single-Lane	2008	Asphalt construction. Design for future multilane retrofit. Previously controlled by flashing beacon Functional Class: Principal Arterial ICD estimated from Google Maps linework.
Montgomery, AL Montgomery Co. United States	Washington Ave. / S. Bainbridge St. (32.37648, -86.30121)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.1560	Other (At-Grade) Single-Lane	2008	Opened July 2008. ICD estimated from Google Maps linework.
Montgomery, AL Montgomery Co. United States	S. Ripley St. / Washington Ave. (32.37658, -86.29808)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 14.1213	Other (At-Grade) Single-Lane	2008	Opened April 2008. ICD estimated from Google Maps linework.
Montgomery, AL Montgomery Co. United States	University Dr. / East Dr. / (parking lot) (32.36779, -86.17373)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.3593	Other (At-Grade) Single-Lane	2010	Entrance to Auburn University Montgomery (AUM). Year completed estimated (2008-2011). ICD estimated from Google Maps linework.
Miamisburg, OH Montgomery Co. United States	Austin W Blvd. / Automation Way (39.59850, -84.24378)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 44.1728	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Kettering, OH Montgomery Co. United States	Forrer Blvd. / Madison St. (39.71565, -84.14854)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.4476	Other (At-Grade) Multilane (2 Lane, unspecified)	1996	ICD estimated from Google Maps linework.
Limerick, PA Montgomery Co. United States	Swamp Pike / Lewis Rd. / W Arcadia Dr. (40.23457, -75.52624)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	2020	https://patch.com/pennsylvania/limerick/swamp-pike-reopens-limerick-township
Silver Spring, MD Montgomery Co. United States	Woodmoor Dr. / Lexington Dr. (39.02215, -77.00818)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Potomac, MD Montgomery Co. United States	Old Seven Locks Rd. / Quarry Manor Terrace (38.99371, -77.16028)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Bethesda, MD Montgomery Co. United States	Boxwood Rd. / Spangler Ave. (38.94781, -77.10888)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Bethesda, MD Montgomery Co. United States	Tournay Rd. / Spangler Ave. (38.94811, -77.11053)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
(unincorporated), MD Montgomery Co. United States	Travilah Rd. / Turkey Foot Rd. / Hanson Farm Dr. (39.07993, -77.25560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2020	Painted splitter islands. Year Completed estimated (2019-2020).
Germantown, MD Montgomery Co. United States	Crossview Rd. / Autumn Crest Rd. (39.16717, -77.30075)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Crestmount Rd. / Kings Crossing Rd. (39.16175, -77.30841)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Kings Crossing Blvd. / Cornflower Rd. (39.16222, -77.30397)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Kings Crossing Blvd. / Ashmeade Rd. (39.16235, -77.29971)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane		Painted splitter islands. Pedestrian crossings next to circulatory roadway.
Germantown, MD Montgomery Co. United States	Ashleigh Greene Rd. / Ashmeade Rd. (39.16013, -77.29900)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Ashleigh Greene Rd. / Cornflower Rd. (39.15879, -77.30324)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Wonderland Way / Chalet Dr. (39.15516, -77.27464)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Blue Bell, PA Montgomery Co. United States	Anvil Ln. (40.16062, -75.28413)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Blue Bell, PA Montgomery Co. United States	Arbor Way / Jolly Rd. / (parking) (40.14222, -75.28498)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2011-2016).
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.
Silver Spring, MD Montgomery Co. United States	Ritchie Ave. / Oswego Ave. (38.98602, -77.00877)	Traffic Calming Circle Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Painted splitter islands.
Schwenksville, PA Montgomery Co. United States	Greenshire Blvd. / Chatham Ln. (40.22962, -75.47896)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
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.
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.
Tom's Creek, VA Montgomery Co. United States	Honeysuckle Dr. (37.24423, -80.44050)	Other Existing	Unknown Unknown	3 Approaches 15 Driveways 0.0000	Other (At-Grade) Single-Lane
Olney, MD Montgomery Co. United States	Wickham Rd. / Olney Mill Rd. / Dunsford Dr. (39.16071, -77.09596)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on three legs.
Gaithersburg, MD Montgomery Co. United States	Hoover Farm Dr. / Holland Meadow Ln. (39.18129, -77.13125)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Gaithersburg, MD Montgomery Co. United States	Hoover Farm Dr. / Brass Bucket Ct. (39.17775, -77.13018)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Boyds, MD Montgomery Co. United States	Crazy Quilt Ct. (39.16123, -77.30454)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Rockville, MD Montgomery Co. United States	Henderson Circle (39.08800, -77.16702)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
North Potomac, MD Montgomery Co. United States	Bald Cypress Dr. / Willow Tree Dr. / Cherrydale Dr. (39.08158, -77.20120)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Rockville, MD Montgomery Co. United States	Valley Dr. / Aqua Ln. (39.07945, -77.20575)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Gaithersburg, MD Montgomery Co. United States	Parkview Ave. / Uptown St. (39.15334, -77.22619)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2012	Right-turn-only lane on northwest leg. Year Completed estimated (2011-2012).
Clarksburg, MD Montgomery Co. United States	Granite Rock Rd. / Grand Elm St. (39.24126, -77.26647)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Clarksburg, MD Montgomery Co. United States	Saint Clair Rd. / Timber Creek Ln. / Brewers Tavern Terrace / (unknown) (39.23680, -77.27531)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Silver Spring, MD Montgomery Co. United States	Gist Ave. / Woodbury Dr. (38.98948, -77.02294)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Clarksville, TN Montgomery Co. United States	Needmore Rd. / N Whitfield Rd. (36.58403, -87.33613)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2024	https://clarksvillenow.com/local/rhonda-the-roundabout-has-public-debut-city-of-clarksville-adjusting-signage-signal-timing/
Magnolia, TX Montgomery Co. United States	Magnolia Ridge Blvd. / Jewett Meadow Dr. / Rogerdale River Dr. (30.21121, -95.73470)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Gaithersburg, MD Montgomery Co. United States	Perry Pkwy. / (parking) (39.14899, -77.21048)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2004	Year Completed estimated (2002-2005).
Redland, MD Montgomery Co. United States	Columbus Ave. / Gramercy Blvd. (39.12362, -77.16494)	Other Existing	All-Way Stop Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
King Farm, MD Montgomery Co. United States	Pleasant Circle (39.11623, -77.17518)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Pedestrian access to central island.
Potomac, MD Montgomery Co. United States	10600 Morning Field Dr. / Sunny Brooke Ln. / Sunny Brooke Pl. (39.07423, -77.21561)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Potomac, MD Montgomery Co. United States	Broad Green Dr. / Clagett Farm Dr. (39.04566, -77.19669)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Potomac, MD Montgomery Co. United States	Larkmeade Ln. / Bells Ridge Dr. (39.03483, -77.16775)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Derwood, MD Montgomery Co. United States	Achille Ln. / Heartwood Dr. (39.12925, -77.11543)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.