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
Foley, AL Baldwin Co. United States	S OWA Blvd. / Midtown Village Blvd. / (unknown) (30.37156, -87.65917)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2017	Unsigned and unmarked left-turn-only trap lane on east leg. 2022 or earlier (SV)
Orange Beach, AL Baldwin Co. United States	Canal Rd. / (parking) (30.29209, -87.57667)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2023	https://www.youtube.com/watch?v=OxgEB2iOzH4
Fairhope, AL Baldwin Co. United States	CR 13 / Twin Beach Rd. (30.50177, -87.86931)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://www.wkrg.com/baldwin-county/latest-roundabout-opens-to-traffic-in-fairhope/
Fairhope, AL Baldwin Co. United States	CR 13 (Oberg Rd.) / Gayfer Rd. (30.53094, -87.86917)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.2071	Other (At-Grade) Single-Lane	2017	Striped out (non-raised) external truck aprons on each entry. https://www.facebook.com/fairhope.times/posts/-and-construction-of-the-new-roundabout-on-cr-13-at-gayfer-road-will-begin-next-/677424982444080/ ICD estimated from Google Maps linework.
Daphne, AL Baldwin Co. United States	CR-64 / CR-13 (30.60376, -87.86897)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 46.2586	Other (At-Grade) Single-Lane	2015	Merge-type bypass lane on east leg. ICD estimated from Google Maps linework.
Fairhope, AL Baldwin Co. United States	Fairhope Ave. / Oberg Rd. (30.52379, -87.86932)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.4120	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Daphne, AL Baldwin Co. United States	Whispering Pines Rd. / Pollard Rd. (30.61848, -87.88578)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.8622	Other (At-Grade) Single-Lane	2010	Completed summer 2010. Functional Class: Collector ICD estimated from Google Maps linework.
Palma, Autonomous Community of Balearic Islands Baleares Spain	Camino de Genova / Calle de Andrea Doria / Calle de las Illes Balears (39.57212, 2.62028)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Ma-1044 / Ma-20 NB Ramps / Carrer Illes Balears (39.57396, 2.61202)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Camino de los Reyes / Calle de Miquel Lladó Oliver (39.58271, 2.61635)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Plaza del Llaç Blau [Carrer Dragonera / Avenida de Picasso] (39.57930, 2.62696)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Camino de la Vileta / Camino de los Reyes (39.58895, 2.62492)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Gran Via d'Asima / Cami Vell de Bunyola (39.60051, 2.67383)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Calle Josep Roig / Calle del Guadiana / Ma-13 NB Ramps (39.58920, 2.67188)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Calle de Indalecio Prieto / Calle Sebastia Arrom (39.58009, 2.67651)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Ma-15 / Ma-3018 (39.57045, 2.68594)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	(unknown) / Ma-15 EB Ramps (39.56922, 2.70128)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Ma-15 / Ma-30 Ramps (39.56833, 2.71054)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Palma, Autonomous Community of Balearic Islands Baleares Spain	Ma-3011 / Ma-30 Ramps (39.57882, 2.71045)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Marratxí, Autonomous Community of Balearic Islands Baleares Spain	Ma-13A / Ma-2040 / Ma-13 Ramps (39.63127, 2.73758)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		Oval shaped.
Santa María, Autonomous Community of Balearic Islands Baleares Spain	Ma-3010 / Ma-3030 Ma-13 EB Ramps (39.63858, 2.78001)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Inca, Autonomous Community of Balearic Islands Baleares Spain	Camino de Velas / Ma-13 Ramps (39.73456, 2.93917)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Ballarat Central, VIC Ballarat Australia	A300 (Midland Hwy.) / Webster St. / Market St. (-37.55731, 143.85522)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Brown Hill, VIC Ballarat Australia	Humffray St. N / Stawell St. N (-37.55454, 143.88283)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island
Sebastopol, VIC Ballarat Australia	A300 (Albert St.) / B160 (Hertford St.) / Sayle St. (-37.58516, 143.84090)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Sebastopol, VIC Ballarat Australia	A300 (Albert St.) / C295 (Bridge St.) / Victoria St. (-37.59879, 143.84115)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Buninyong, VIC Ballarat Australia	A300 (Learmonth St.) / C294 (Warrenheip St.) (-37.65024, 143.88395)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Wendouree, VIC Ballarat Australia	C307 (Gillies St. N) / C306 (Norman St.) (-37.53223, 143.82354)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Wendouree, VIC Ballarat Australia	Norman St. / Downing St. (-37.53434, 143.84126)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Wendouree, VIC Ballarat Australia	Norman St. / Forest St. (-37.53328, 143.83263)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Wendouree, VIC Ballarat Australia	C307 (Gillies St. N) / Grevillea Rd. (-37.52654, 143.82463)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Mitchell Park, VIC Ballarat Australia	C287 (Learmonth Rd.) / Ring Rd. (-37.52477, 143.80954)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Alfredton, VIC Ballarat Australia	Learmonth St. / Cuthberts Rd. (-37.55526, 143.81313)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Lucas, VIC Ballarat Australia	Cuthberts Rd. / Dyson Dr. (-37.55208, 143.78545)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Golden Point, VIC Ballarat Australia	C298 (Barkly St.) / C297 (Grant St.) (-37.56965, 143.86279)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Canadian, VIC Ballarat Australia	C294 (Geelong Rd.) / Canadian Lakes Blvd. / Rodney Ave. (-37.58873, 143.86669)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Canadian, VIC Ballarat Australia	C294 (Geelong Rd. - Main Rd.) / Elsworth St. (-37.58237, 143.86800)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Golden Point, VIC Ballarat Australia	C294 (Main Rd.) / C297 (Grant St.) / Lal Lal St. (-37.57496, 143.86886)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Golden Point, VIC Ballarat Australia	C294 (Main Rd.) / York St. (-37.56993, 143.87055)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island
Ballarat East, VIC Ballarat Australia	Eureka St. / Fussell St. (-37.56699, 143.89399)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Miners Rest, VIC Ballarat Australia	Macarthur Park Blvd. / McKellar Dr. / Orbost Dr. (-37.50140, 143.80818)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Miners Rest, VIC Ballarat Australia	C287 (Howe St.) / Macarthur Park Blvd. (-37.50181, 143.80578)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Ballarat, VIC Ballarat Australia	C296 (Ballarat-Carngham Rd. - La Trobe St.) / C307 (Wiltshire Ln. - Learmonth St.) (-37.56984, 143.81039)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Redan, VIC Ballarat Australia	C296 (La Trobe St.) / Pleasant St. S (-37.57272, 143.83665)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Redan, VIC Ballarat Australia	C296 (La Trobe St.) / C305 (Drummond St. S) (-37.57330, 143.84518)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Mount Helen, VIC Ballarat Australia	C294 (Geelong Rd.) / University Dr. / Eilish Ct. (-37.62475, 143.87890)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Delacombe, VIC Ballarat Australia	B160 (Glenelg Hwy. - Smythes Rd.) / C307 (Wiltshire Ln.) / Cherry Flat Rd. (-37.59037, 143.80650)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Mitchell Park, VIC Ballarat Australia	C287 (Learmonth Rd.) / Ballarat West Link Rd. / Airport Rd. (-37.51796, 143.80313)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	Tamarind Dr. / N Creek Rd. / Link Rd. (-28.85126, 153.55404)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	Southern Cross Dr. / N Creek Rd. (-28.84940, 153.55598)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	River St. / Keppel St. / Barlows Rd. (-28.86319, 153.53987)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	Tamar St. / Moon St. (-28.86884, 153.55975)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Ballina, NSW Ballina Australia	Tamar St. / Cherry St. (-28.86973, 153.56192)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Ballina, NSW Ballina Australia	River St. / Moon St. (-28.86996, 153.55914)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Ballina, NSW Ballina Australia	River St. / Cherry St. (-28.87089, 153.56127)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Ballina, NSW Ballina Australia	Bentinck St. / Moon St. (-28.86391, 153.56248)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	Bentinck St. / Cherry St. (-28.86481, 153.56466)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	Bentinck St. / Hill St. / Kingsford Smith Dr. (-28.86944, 153.57492)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Ballina, NSW Ballina Australia	Bentinck St. / Martin St. (-28.86575, 153.56687)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Ballina, NSW Ballina Australia	Bangalow Rd. / Angels Beach Dr. / (parking) (-28.85835, 153.56375)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
East Ballina, NSW Ballina Australia	Angels Beach Dr. / Links Ave. (-28.84694, 153.58264)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
East Ballina, NSW Ballina Australia	The Coast Rd. / Angels Beach Dr. / Condon Dr. (-28.84428, 153.59854)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Lennox Head, NSW Ballina Australia	Ballina St. / N Creek Rd. / The Coast Rd. / Byron Bay Rd. (-28.80149, 153.59267)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Alstonville, NSW Ballina Australia	Main St. / Daley St. / Ambrose Ln. (-28.84208, 153.44036)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Skennars Head, NSW Ballina Australia	Headlands Dr. / Aureus Blvd. (-28.83249, 153.60343)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Wollongbar, NSW Ballina Australia	Rifle Range Rd. / Plateau Dr. (-28.82057, 153.42188)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Lennox Head, NSW Ballina Australia	The Coast Rd. / Skennars Head Rd. (-28.82342, 153.60367)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Skennars Head, NSW Ballina Australia	The Coast Rd. / Headlands Dr. / (parking) (-28.83304, 153.60409)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
West Ballina, NSW Ballina Australia	River St. / Burns Point Ferry Rd. / Riverbend Dr. (-28.86469, 153.52882)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Park Lane, MD Baltimore City United States	Pall Mall Rd. / Wylie Ave. / Edgecombe Cir. S (39.34212, -76.66482)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Medfield, MD Baltimore City United States	Weldon Ave. / Elsa Terrace (39.33803, -76.63881)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway; pedestrian access to central island.
Baltimore, MD Baltimore City United States	Whetstone Way / (parking) (39.26820, -76.60021)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Baltimore, MD Baltimore City United States	New Hope Circle (39.29360, -76.60289)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island. Parking along circulatory roadway.
Baltimore, MD Baltimore City United States	S President St. / Aliceanna St. (39.28317, -76.60158)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on three legs.
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
Baltimore, MD Baltimore City Co. United States	Guilford Ave. / 22nd St. (39.31441, -76.61263)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 6.4682	Other (At-Grade) Single-lane w/ Traversable Central Island	2012	ICD estimated from Google Maps linework.
Baltimore, MD Baltimore City Co. United States	Guilford Ave. / E 24th St. (39.31650, -76.61276)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 9.2400	Other (At-Grade) Single-lane w/ Traversable Central Island	2012	ICD estimated from Google Maps linework.
Baltimore, MD Baltimore City Co. United States	Guilford Ave. / E 32nd St. (39.32703, -76.61345)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island	2012
Baltimore, MD Baltimore City Co. United States	Old Frederick Road / Maple Wood Road (39.29094, -76.69283)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8815	Other (At-Grade) Single-Lane	2013	4th leg not built yet - for future development ICD estimated from Google Maps linework.
Baltimore, MD Baltimore City Co. United States	Wilkens Ave / Mount St / Ramsey St (39.28325, -76.64332)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 31.4310	Other (At-Grade) Single-Lane	2001	Completed prior to 2002 ICD estimated from Google Maps linework.
Baltimore, MD Baltimore City Co. United States	Canterbury Rd. / W 39th St. (39.33569, -76.62047)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 16.6275	Other (At-Grade) Single-lane w/ Traversable Central Island	2013	ICD estimated from Google Maps linework.
Catonsville, MD Baltimore Co. United States	Edmundson Avenue / Old Frederick Road (39.27533, -76.76612)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 20.3400	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Essex, MD Baltimore Co. United States	Southeast Blvd. (MD 702) / Hyde Park Rd. (39.29884, -76.43951)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.6663	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Built as temporary installation, then converted to permanent design. ICD estimated from Google Maps linework.
Owings Mills, MD Baltimore Co. United States	Tollgate Rd. / Lastgage Rd. (39.42149, -76.78482)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.6010	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Dundalk, MD Baltimore Co. United States	Dundalk Ave. / Sollers Point Rd. (39.24534, -76.50786)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.9734	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Windsor Mill, MD Baltimore Co. United States	Lord Baltimore Dr. / Wildlife Dr. (39.31993, -76.75019)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 14.7833	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Windsor Mill, MD Baltimore Co. United States	Lord Baltimore Dr. / Glen Spring Rd. / Kettle Ct. (39.31750, -76.75152)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 17.5558	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Catonsville, MD Baltimore Co. United States	UMBC Blvd. / Research Park Dr. (39.24874, -76.71580)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.3950	Other (At-Grade) Single-Lane	2015	Elliptical shape. ICD estimated from Google Maps linework.
Catonsville, MD Baltimore Co. United States	Hilltop Cir. / UMBC Blvd. (39.25178, -76.71442)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 60.1156	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	Lane changes needed for some through movements. ICD estimated from Google Maps linework.
Catonsville, MD Baltimore Co. United States	MD 372 / Hilltop Rd. / Entrance to UMBC (39.25733, -76.71964)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.1417	Other (At-Grade) Single-Lane	1998	Functional Class: Collector ICD estimated from Google Maps linework.
Towson, MD Baltimore Co. United States	MD 45 / MD 146 / Joppa Rd. / Allegheny Ave. (39.40185, -76.60230)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 47.9892	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Opened October 1998. Exit striping retrofitted to roundabout after opening. Hotdog/racetrack shape. ICD estimated from Google Maps linework. 21442
Lutherville-Timonium, MD Baltimore Co. United States	MD 139 (Charles St.) / Bellona Ave. (39.41790, -76.62900)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Two-lane circulatory roadway across northern half.
Reisterstown, MD Baltimore Co. United States	Worthington Ave. / Greenspring Ave. / Tufton Ave. (39.47691, -76.76508)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.1095	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Kingsville, MD Baltimore Co. United States	MD 147 (Harford Rd.) / Glen Arm Rd. / Mt Vista Rd. (39.46045, -76.45652)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0397	Other (At-Grade) Single-Lane	2018	https://www.baltimoresun.com/maryland/harford/aegis/ph-ag-harford-road-roundabout-20180102-story.html ICD estimated from Google Maps linework.
Perry Hall, MD Baltimore Co. United States	E Joppa Rd. / Scott Moore Way / Cowenton Ave. (39.40290, -76.44124)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2008	Right-turn bypass lane on west leg.
Cockeysville, MD Baltimore Co. United States	Lord Byron Ln. / Duke of York Ln. (39.46487, -76.63164)	Other Existing	Unknown Unknown	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Perry Hall, MD Baltimore Co. United States	Scott Moore Way / Honeygo Center Dr. (39.40491, -76.44142)	Other Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
Perry Hall, MD Baltimore Co. United States	Georgia Belle Dr. / Fragrence Way / Harcrest Way (39.40467, -76.42700)	Other Existing	All-Way Yield Unknown	4 Approaches 4 Driveways 0.0000	Other (At-Grade) Single-Lane
Dulaney Forest, MD Baltimore Co. United States	E Ridgely Rd. / Margate Rd. (39.43199, -76.60754)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	2013	No raised splitter islands on side street. Year Completed estimated (2012-2014).
Owings Mills, MD Baltimore Co. United States	Ballard Green Dr. / Wilson Shannon Dr. / Julia Ln. (39.39162, -76.80439)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2017-2018).