Roundabouts Database Index

30016 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
Blue Ash, OH Hamilton Co. United States	Hunt Rd. / Plainfield Rd. (39.22691, -84.39426)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 53.0352	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.wcpo.com/news/local-news/hamilton-county/blue-ash/blue-ash-police-new-roundabout-while-confusing-some-is-reducing-crashes
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.
Clarksville, MD Howard Co. United States	Preakness Circle Ln. / Watkins Bridge Ln. (39.22880, -76.94308)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 30.4800	Other (At-Grade) Single-Lane	2010
Clarksville, MD Howard Co. United States	Watkins Bridge Ln. / Holly Creek Ln. (39.22939, -76.94583)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2010
Clarksville, MD Howard Co. United States	Linden Church Rd. / MD 32 NB Ramps (39.22942, -76.97263)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2013	Year Completed estimated (2011-2014).
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.
Quartu Sant’Elena, Sardinia Cagliari Italy	SP17 / SP17ter / Viale Europa / Via Flume (39.23079, 9.22086)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Blue Ash, OH Hamilton Co. United States	Plainfield Rd. / Peppermill Ln. / Reed-Hartman Hwy. (39.23083, -84.39482)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2023	RRFB on all four legs. https://www.blueash.com/departments/public_works/hunt_plainfield.php
Kansas City, MO Clay Co. United States	NE Flintlock Rd / NE 76th St (39.23094, -94.47007)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 57.3581	Other (At-Grade) Multilane (2 Lane, unspecified)	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.
Clarksville, MD Howard Co. United States	Northern Bell Way / Bee Frances Way / Catherine Close Rd. (39.23232, -76.97091)	Other Existing	Unknown Unknown	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane
Grass Valley, CA Nevada Co. United States	Olympia Park Cir. / (parking lot) (39.23248, -121.03766)	Roundabout Existing	All-Way Yield None	2 Approaches 1 Driveways 22.8600	Other (At-Grade) Single-lane w/ Traversable Central Island	2014	All paint, no raised islands. Opened November 2014. Previously, Olympia Park Circle made a gentle 90-degree curve. Traffic entering from stop-controlled driveway had trouble making left turn as they had to proceed 60 feet to reach the safety of centerline without knowing if approaching vehicle on their left was going to enter the driveway or curve left in front of them. Now about 50% of driveway exits cheat across the central island, but it works just fine. After six years with no raised islands, a central island was built on 3 Nov 2020: 20 feet in diameter, 4 inches high, designed for asphalt but built with PCC.
Grass Valley, CA Nevada Co. United States	Sierra College Dr. / Litton Dr. / Robert Ross Way (39.23445, -121.05200)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.3780	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Kings Beach, CA Placer Co. United States	N Lake Blvd. / Coon St. (39.23589, -120.02207)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.6021	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
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.
Kings Beach, CA Placer Co. United States	N Lake Blvd. / Bear Ave. / Brook Ave. / (beach parking) (39.23681, -120.02465)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.0514	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Blue Ash, OH Hamilton Co. United States	Malsbary Rd. / Alliance Rd. (39.23916, -84.38188)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2258	Other (At-Grade) Single-Lane	2017	http://www.blueash.com/departments/public_works/roundabout_safety.php ICD estimated from Google Maps linework.
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.
Cagliari, Sardinia Cagliari Italy	Via Edward Jenner / (connector to SS131dir) (39.24238, 9.11694)	Other Existing	All-Way Stop Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Kansas City, MO Clay Co. United States	NE 82nd Terr. / N Booth Ave. (39.24250, -94.47752)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	South leg stubbed.
Blue Ash, OH Hamilton Co. United States	Plainfield Rd. / Parkview Dr. (39.24335, -84.39561)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 18.4993	Other (At-Grade) Single-Lane	2018	http://www.blueash.com/departments/public_works/roundabout_safety.php ICD estimated from Google Maps linework.
Liberty, MO Clay Co. United States	S Stewart Rd. / (parking) (39.24344, -94.45337)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5277	Other (At-Grade) Single-Lane	2016	Add-lane right-turn bypass lane on south leg.
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.
West Friendship, MD Howard Co. United States	Castlebridge Rd. / Hunter's View Rd. (39.24552, -76.90189)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2006
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
Kansas City, MO Clay Co. United States	N Booth Ave. / NE Shoal Creek Valley Dr. / Commercial Dr. (39.24626, -94.47674)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Yield-controlled right-turn bypass lane on west leg. Year Completed estimated (2020-20210.
Liberty, MO Clay Co. United States	College St. / N Blue Jay Dr. (39.24628, -94.44898)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2005
Liberty, MO Clay Co. United States	N Stewart Rd. / College St. / Conistor Ln. / (parking) (39.24629, -94.45100)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2002	Year Completed estimated (1997-2003).
Evendale, OH Hamilton Co. United States	Neumann Way / Evendale Dr. (39.24668, -84.44092)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2020	Year Completed estimated (2019-2020).
Kansas City, MO Clay Co. United States	NE Shoal Creek Valley Dr. / (unknown) (39.24673, -94.47459)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2020
Quartucciu, Sardinia Cagliari Italy	Via delle Serre / Via Segre (39.24684, 9.16501)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Kansas City, MO Clay Co. United States	N Sycamore Ave. / N 85th Terr. / Shoal Creek Valley Dr. (39.24733, -94.48586)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Single-Lane	2002	No truck apron. Year Completed estimated (1997-2003).
Montgomery, OH Hamilton Co. United States	Pfeiffer Rd. / Deerfield Rd. (39.24866, -84.35092)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://www.facebook.com/story.php/?story_fbid=602452425250045&id=100064558789263
Catonsville, MD Baltimore Co. United States	Research Park Dr. (39.24868, -76.71406)	Other Existing	Uncontrolled Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
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.
Ellicott City, MD Howard Co. United States	Columbia Rd. / Hemlock Cone Way / Kingscup Ct. (39.24949, -76.83326)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3360	Other (At-Grade) Single-lane w/ Traversable Central Island	2019
Cagliari, Sardinia Cagliari Italy	Via Giuseppe Peretti / Via Stamira / SS131dir (Circonvallazione Quadrifoglio) Ramps (39.24951, 9.11493)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Evendale, OH Hamilton Co. United States	Aviation Way / Evendale Dr. (39.24957, -84.44120)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Double left turn on west leg.
West Friendship, MD Howard Co. United States	Folly Quarter Rd. / Sheppard Ln. / Homewood Rd. (39.24979, -76.93188)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2002-2005).
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.
Ellicott City, MD Howard Co. United States	Hillsborough Rd. / English Morning Ln. (39.25046, -76.79507)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Selargius, Sardinia Cagliari Italy	Via Giuseppe Peretti / Via Araolla / Piazzale Alessandro Ricchi (39.25098, 9.10911)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Incline Village, NV Washoe Co. United States	SR 28 (Tahoe Blvd.) / SR 431 (Mt Rose Hwy.) (39.25146, -119.97321)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 39.7690	Other (At-Grade) Single-Lane	2012	Reduced from two entering lanes (LT only, TH only) on west leg to one lane in 2015-2016. Now single-lane roundabout. ICD estimated from Google Maps linework.
Evendale, OH Hamilton Co. United States	Aviation Way / (parking) (39.25152, -84.44081)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018
Blue Ash, OH Hamilton Co. United States	Glendale Milford Rd. / Lake Forest Dr. / Summit Pl. (39.25169, -84.38466)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.8671	Other (At-Grade) Multilane (2 Lane, unspecified)	2019	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.
Monserrato, Sardinia Cagliari Italy	Via Riu Mortu / Via Cesare Cabras / Viale Trieste / Via Giuseppe Zuddas (39.25227, 9.14655)	Other Existing	Other Unknown	5 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Mix of stop and yield control on entry.
Kansas City, MO Platte Co. United States	N Serene Ave. / NW Prairie View Rd. (39.25268, -94.66677)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.5950	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	N Congress Ave. / MO-152 EB Off-ramp / N Serene Ave. (39.25328, -94.66808)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 51.7908	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Harrison, OH Hamilton Co. United States	Dry Fork Rd. / West Rd. (39.25461, -84.76702)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021	Next to high school and junior high school. https://www.facebook.com/CityofHarrison/photos/a.155847067781927/4751915121508409/?type=3&source=48
Kansas City, MO Platte Co. United States	N Congress Ave. / MO-152 WB On-ramp / NW 96th Terr. (39.25531, -94.66793)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 55.4886	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2005	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.
Ellicott City, MD Howard Co. United States	College Ave. / Bending Sky Way (39.25754, -76.79122)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.8186	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	Line Creek Pkwy. / Tiffany Springs Rd. (39.25957, -94.61010)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021
Catonsville, MD Baltimore Co. United States	Hidden Bludd Cir. / Jacks Ct. (39.25966, -76.71926)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Romeira, Santarém Santarém Portugal	N114 / N3 (39.26012, -8.72073)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Coves North, MO Platte Co. United States	NW Old Tiffany Springs Rd. / N Green Hills Rd. (39.26253, -94.63089)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.3863	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	Elliptical shape. https://www.linecreekloudmouth.com/blog/street-improvements/ ICD estimated from Google Maps linework.
Charles Town, WV Jefferson Co. United States	Prospect Hill Blvd. / Butler St. (39.26299, -77.87787)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Millington, MD Kent Co. United States	MD 291 / US 301 NB Ramps (39.26386, -75.86260)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6656	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Glenelg, MD Howard Co. United States	Triadelphia Rd. / Ten Oaks Rd. (39.26399, -76.98621)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1992-2002).
Millington, MD Kent Co. United States	MD 291 / US 301 SB Ramps (39.26463, -75.86641)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4393	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Bloomington, IN Monroe Co. United States	Sample Rd. / N Wayport Rd. / N Frontage Rd. E (39.26549, -86.51969)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2019).
Bloomington, IN Monroe Co. United States	Sample Rd. / I-69 NB Ramps (39.26581, -86.52203)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1000	Freeway Ramps (Grade-Separated) Single-Lane	2017	Year Completed estimated (2016-2019).
Bloomington, IN Monroe Co. United States	Sample Rd. / N Frontage Rd. W / I-69 SB Ramps (39.26595, -86.52428)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Freeway Ramps (Grade-Separated) Single-Lane	2017	Year Completed estimated (2016-2019).
Kansas City, MO Clay Co. United States	N Shoal Creek Pkwy / NE 96th St (39.26609, -94.48916)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 72.1240	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	ICD estimated from Google Maps linework.
Charles Town, WV Jefferson Co. United States	Ball Circle (39.26676, -77.87701)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Kansas City, MO Clay Co. United States	N Shoal Creek Pkwy / N Eastern Ave (39.26697, -94.49252)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 82.2943	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	N Maplewoods Pkwy. / NE 96th St. (39.26747, -94.55716)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	East leg stubbed. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
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.
Meadowbrook Heights, MO Clay Co. United States	Tiffany Springs Pkwy (39.26919, -94.58184)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Kansas City, MO Clay Co. United States	NW 96th St. / N Summit St. (39.26988, -94.58925)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.6078	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	NW 96th St. / US 169 SB Ramps (39.26994, -94.58598)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.6831	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	Tiffany Springs Pkwy. / NW 96th St. / US 169 NB Ramps (39.26998, -94.58361)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.6077	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	ICD estimated from Google Maps linework.
Charles Town, WV Jefferson Co. United States	Haversack Circle (39.27053, -77.84909)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Larkspur, CO Douglas Co. United States	Bear Dance Dr. / Sky View Ln. / Elk View Rd. / Lake Dr. (39.27054, -104.90711)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4367	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2004). ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	N Ambassador Dr. / NW Tiffany Springs Pkwy. (39.27269, -94.66401)	Rotary Existing	All-Way Yield None	3 Approaches 0 Driveways 101.7038	Other (At-Grade) Multilane (2 Lane, unspecified)		Converted rotary. ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	NW Skyview Ave. / NW Tiffany Springs Pkwy. (39.27313, -94.65420)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 132.2141	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Glenelg, MD Howard Co. United States	Burntwoods Rd. (MD 932B) / Ten Oaks Rd. (MD 932C) (39.27315, -76.98805)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9074	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
West Friendship, MD Howard Co. United States	Burntwoods Rd. / Andrea Dr. / MD 32 NB Ramps (39.27321, -76.98627)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.1338	Freeway Ramps (Grade-Separated) Single-Lane	2008	ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	N Maplewoods Pkwy. / New Mark Dr. / NE 100th St. (39.27475, -94.55715)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2021	https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
Smyrna, DE Kent Co. United States	Ormonde Circle (39.27525, -75.61641)	Other Existing	Unknown Unknown	3 Approaches 13 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Charles Town, WV Jefferson Co. United States	St George St. / Citizens Way / US 340 SB Ramps (39.27528, -77.84935)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.5100	Freeway Ramps (Grade-Separated) Single-Lane	2018	Year Completed estimated (2015-2019). 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.
Glenelg, MD Howard Co. United States	Ten Oaks Rd. / Pfefferkorn Rd. / MD 32 SB Ramps (39.27615, -76.98641)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.3587	Freeway Ramps (Grade-Separated) Single-Lane	2008	ICD estimated from Google Maps linework.
Glenwood, MD Howard Co. United States	Burntwoods Rd. / Sharp Rd. (39.27702, -77.00369)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.5847	Other (At-Grade) Single-Lane	2006	Adjacent to Glenelg High School. ICD estimated from Google Maps linework.
Smyrna, DE Kent Co. United States	Newgate Circle (39.27813, -75.61345)	Other Existing	Unknown Unknown	4 Approaches 10 Driveways 0.0000	Other (At-Grade) Single-Lane
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
Laddonia, MO Audrain Co. United States	US 54 / MO 19 / CR J (39.28073, -91.64373)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2022	https://www.modot.org/node/27038
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 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.
Kansas City, MO Clay Co. United States	N Maplewoods Pkwy. / NE 106th St. / NE Staley Ferris Dr. (39.28508, -94.55712)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	2021	Peanut shaped. Replaced two offset T-intersections. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
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).
Point of Rocks, MD Frederick Co. United States	US 15 / Point of Rocks Rd. (39.28643, -77.53096)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 47.1443	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	ICD estimated from Google Maps linework.
Truckee, CA Placer Co. United States	Northstar Dr. / Ridgeline Dr. (39.28647, -120.10701)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.6735	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Year Completed estimated (2006-2009). ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	N Platte Purchase Dr. / NW 108th St. (39.28944, -94.60190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2015-2016).
Kansas City, MO Clay Co. United States	NW 108th St. / US 169 NB Ramps (39.28944, -94.58446)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 41.5961	Unknown Multilane (2 Lane, unspecified)	2013	Diamond interchange replaced signalized intersection. Series of three roundabouts. ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	NW 108th St. / US 169 SB Ramps (39.28944, -94.58625)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 43.4449	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Diamond interchange replaced signalized intersection. Series of three roundabouts. ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	NW 108th St. / N Summit St. (39.28953, -94.58976)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.6717	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	Series of three roundabouts. ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	N Shoal Creek Pkwy. / Maplewoods Pkwy. (39.28995, -94.55702)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	2021	Merging right-turn bypass lane lane on west leg. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
Deerfield Township, OH Warren Co. United States	Fields Ertel Rd. / N Lebanon Rd. / Columbia Rd. (39.28999, -84.28242)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6549	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.