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
Townsend, DE New Castle Co. United States	N Odessa Blvd. / Tweedsmere Dr. / Aviemore Dr. / Ravenglass Dr. (39.41965, -75.63644)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Hanover Township, OH Butler Co. United States	Stahlheber Rd. / Morman Rd. (39.42038, -84.64629)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2023
Terre Haute, IN Vigo Co. United States	Willow Run Ct. / Aspen Ct. / Magnolia Ct. (39.42072, -87.32787)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 101.4886	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Liberty Township, OH Butler Co. United States	Aspenwood Dr. / Aspen Trail Blvd. (39.42119, -84.44619)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 26.7559	Other (At-Grade) Single-Lane	2003	No splitter islands. 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.
Linganore, MD Frederick Co. United States	Woodridge Rd. / Woodland Rd. (39.42155, -77.32956)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Castle Rock, CO Douglas Co. United States	Promenade Pkwy. / (parking lot) (39.42238, -104.87869)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.5233	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Martinsville, IN Morgan Co. United States	SR 252 (Morgantown Rd.) / Cramertown Loop (39.42394, -86.39938)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	Opened 12/2021 as part of the I-69 opening around Martinsville. https://i69finishline.com/construction-schedule/.
Castle Rock, CO Douglas Co. United States	Castle Rock Pkwy. / Promenade Pkwy. / I-25 SB Off-Ramp / I-25 NB Ramps (39.42427, -104.87786)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.3611	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Martinsville, IN Morgan Co. United States	SR 252 (Morgantown Rd.) / I-69 NB Ramps (39.42498, -86.40092)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2021	Replaced at-grade signalized intersection.
Chillicothe, OH Ross Co. United States	SR 159 / SR 180 (39.42539, -82.95429)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/
Middletown, DE New Castle Co. United States	St Annes Church Rd. / Wiggins Mill Rd. (39.42541, -75.72769)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1348	Other (At-Grade) Single-Lane	2010	Previous intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
Virginia Footills, NV Washoe Co. United States	McCauley Ranch Blvd. / Gold Mine Dr. (39.42575, -119.70909)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2007	Painted splitter islands on all legs.
Martinsville, IN Morgan Co. United States	SR 252 (Morgantown Rd.) / I-69 SB Ramps / Hospital Dr. (39.42578, -86.40211)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2021	Replaced at-grade signalized intersection. Opened to traffic 12/2021. https://i69finishline.com/construction-schedule/.
Montalto Uffugo, Calabria Cosenza Italy	SP241 (Corso Italia) / Via Busento (39.42609, 16.23949)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Castle Rock, CO Douglas Co. United States	Sapphire Pointe Blvd. / Sulfur Ln. / Peridot Ln. (39.42788, -104.84576)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 63.6545	Other (At-Grade) Single-Lane	2003	Single-stage pedestrian crossings, fully traversable splitter islands, no buffer between sidewalk and circulatory roadway. Year Completed estimated (2002-2005). ICD estimated from Google Maps linework.
Parachute, CO Garfield Co. United States	Old Hwy 6 / I-70 EB Ramps / (unknown) (39.42828, -108.07440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Freeway Ramps (Grade-Separated) Single-Lane	2012
(unincorporated), CO Douglas Co. United States	W Happy Canyon Rd. / Castle Pines Dr. (39.42838, -104.90106)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8306	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Middletown, DE New Castle Co. United States	St Annes Church Rd. / Levels Rd. (39.42842, -75.73887)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.9783	Other (At-Grade) Single-Lane	2010	Intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
Reisterstown, MD Baltimore Co. United States	Winged Foot Dr. / Crystal Downs Ct. / Kauri Cliffs Rd. (39.42897, -76.81445)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Sykesville, MD Carroll Co. United States	Old Washington Rd. (MD 97) / W Old Liberty Rd. (39.42906, -77.00755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1330	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1995-2005). ICD estimated from Google Maps linework.
Castle Rock, CO Douglas Co. United States	Sapphire Pointe Blvd. / Tremolite Dr. (39.42908, -104.85397)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 52.5832	Other (At-Grade) Single-Lane	2005	No buffer between sidewalk and circulatory roadway. ICD estimated from Google Maps linework.
Parachute, CO Garfield Co. United States	Old Hwy 6 / I-70 WB Ramps (39.42982, -108.07610)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Freeway Ramps (Grade-Separated) Single-Lane	2012
Montalto Uffugo, Calabria Cosenza Italy	SP248 (Corso Italia) / SP102 (Via Alessandro Manzoni) (39.43119, 16.23146)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Egg Harbor, NJ Atlantic Co. United States	Tilton Road Circle (39.43177, -74.57915)	Signalized Roundabout/Circle Existing	Signal Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)		Hamburger shaped.
Virginia Footills, NV Washoe Co. United States	Burghley Ln. / Calais Ln. (39.43197, -119.71530)	Unknown Existing	Unknown Unknown	3 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).
Reno, NV Washoe Co. United States	Burghley Ln. / Kerrydale Ct. (39.43443, -119.71424)	Other Existing	Unknown Unknown	2 Approaches 5 Driveways 0.0000	Other (At-Grade) Unknown
Townsend, DE New Castle Co. United States	Tony Marchio Dr. / Campus Dr. / Stadium Way (39.43676, -75.64873)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Concentric striping on circulatory roadway. Right-turn-only arrows in all lanes of three entries. Year Completed estimated (2011-2015).
Virginia Footills, NV Washoe Co. United States	Bucephalus Pkwy. / Burmese Ln. / Show Jumper Ln. (39.43756, -119.70732)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on north and south legs.
(unincorporated), CO Douglas Co. United States	Fox Sparrow Rd. / Windhaven Dr. (39.43781, -104.73199)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.7495	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Virginia Footills, NV Washoe Co. United States	Bucephalus Pkwy. / Show Jumper Ln. (39.43790, -119.71097)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2015	Painted splitter islands on north and south legs. Year Completed estimated (2014-2015).
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
Terre Haute, IN Vigo Co. United States	2216 Huber Ln (39.43806, -87.38327)	Traffic Calming Circle Existing	Unknown None	1 Approaches 2 Driveways 23.0599	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	2440 Huber Ln (39.43817, -87.38012)	Traffic Calming Circle Existing	Unknown None	2 Approaches 4 Driveways 23.0598	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	2328 Huber Ln (39.43817, -87.38160)	Traffic Calming Circle Existing	Unknown None	2 Approaches 2 Driveways 23.0598	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Virginia Footills, NV Washoe Co. United States	Buchephalus Pkwy. / Copenhagen Way / Bonfire Ln. (39.43838, -119.71442)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
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).
(unincorporated), CO Douglas Co. United States	Happy Canyon Rd. / Castle Pines Dr. S (39.43975, -104.88723)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1278	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	S Sycamore Terrace St. / New Margaret Dr. (39.43997, -87.34235)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.0408	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	Antioch Cir. / Antioch Cir. Access Road (39.44227, -87.33917)	Other Existing	Unknown None	3 Approaches 0 Driveways 25.8255	Other (At-Grade) Single-Lane		Parking in circulatory roadway. ICD estimated from Google Maps linework.
St. Clair Township, OH Butler Co. United States	Eaton Rd. / Beissinger Rd. (39.44294, -84.58301)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6602	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
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
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	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 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	Amber Dr. / Campus Dr. (39.44702, -77.42000)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	Year Completed estimated (2013-2015). Mismatch between approach lane designations and circulatory roadway striping. Inside lane from east leg must make U-turn unless the driver changes lanes.
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
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
Fort Bragg, CA Mendocino Co. United States	E Fir St. / N Harrison St. (39.44803, -123.80204)	Traffic Calming Circle Removed	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	From the City of Fort Bragg: "The City installed a small neighborhood traffic calming circle in about 2012 on E Fir Street at N Harrison Street. Unfortunately, due to many years of complaints as well as traffic collision increases at the intersection, the roundabout was removed in 2019. It is still shown in Google Maps but it is removed now and replaced with at 4-way stop intersection."
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.
Middletown, DE New Castle Co. United States	S Ridge Ave / Private Driveway (39.44821, -75.73234)	Roundabout Existing	Unknown None	4 Approaches 0 Driveways 40.5794	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
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
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
Middletown, DE New Castle Co. United States	Spring Arbor Dr. / Trellis Ln. (39.45194, -75.73915)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Middletown, DE New Castle Co. United States	Gloucester Blvd. / Hampton Rd. (39.45210, -75.68096)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0439	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
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).
Middletown, DE New Castle Co. United States	Brick Mill Rd. / Dove Run Centre Dr. (39.45413, -75.68672)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-lane w/ Traversable Central Island	2022
Bel Air, MD Harford Co. United States	Constant Friendship Blvd. / BJ's (39.45546, -76.31870)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 29.5092	Other (At-Grade) Single-Lane	1995	Functional Class: Local ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Tewkesbury Rd. / Shrewsbury Rd. (39.45775, -76.27273)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.7952	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2003-2004). http://onlinepubs.trb.org/Onlinepubs/circulars/ec083/68_Statmeyerpaper.pdf ICD estimated from Google Maps linework.
Middletown, DE New Castle Co. United States	Bunker Hill Rd. / Choptank Rd. (39.45790, -75.74350)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 31.3525	Other (At-Grade) Single-Lane	2007	Rural, redesigned in 2008 to better accommodate trucks and farm equipment. ICD estimated from Google Maps linework.
Castle Pines, CO Douglas Co. United States	Westbridge Dr. / Cross Canyon Trl. (39.45951, -104.85287)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
St. Clair Township, OH Butler Co. United States	Jacksonburg Rd. / Morganthaler Rd. (39.46012, -84.52261)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0399	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
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.
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.
Castle Pines, CO Douglas Co. United States	Lagae Rd. / Monarch Blvd. (39.46134, -104.87935)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.8834	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
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.
Terre Haute, IN Vigo Co. United States	IN-42 / Swalls Dr. (39.46157, -87.28667)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.8833	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2011-2014). ICD estimated from Google Maps linework.
Nelsonville, OH Athens Co. United States	W Washington St. / John Lloyd Evans Dr. / Diamond Brick Rd. (39.46440, -82.25096)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2012
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.
Bel Air South, MD Harford Co. United States	Woodsdale Rd. / Box Hill Corporate Center Dr. / (parking) (39.46498, -76.31016)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2013-2015).
Middletown, OH Warren Co. United States	Union Rd. / Greentree Rd. (39.46532, -84.31978)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.8813	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
The Legends, DE New Castle Co. United States	Wittington Way / Casper Way / Sheehan Dr. (39.46536, -75.70967)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian facility in central island.
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
St. Clair Township, OH Butler Co. United States	Hamilton Trenton Rd. / Riverside Dr. / Busenbark Rd. / (parking lot) (39.46565, -84.48671)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.7252	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Middletown, DE New Castle Co. United States	Brick Mill Circle (39.46632, -75.69145)	Other Existing	Unknown Unknown	4 Approaches 9 Driveways 0.0000	Other (At-Grade) Single-Lane
The Legends, DE New Castle Co. United States	West Wittington Circle (39.46705, -75.71358)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian facility in central island.
Reno, NV Washoe Co. United States	Neill Rd. / Kietzke Ln. (39.46721, -119.79120)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.5545	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
Castle Pines, CO Douglas Co. United States	Lagae Rd. / Hyland Hills Rd. (39.46753, -104.88126)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.4902	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Merchants Blvd. / Wegmans Blvd. (39.46815, -76.30901)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.5039	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Westover Ln. / Crisfield Dr. (39.46859, -76.32162)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7377	Other (At-Grade) Single-Lane	2002	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Reno, NV Washoe Co. United States	Ridgeview Dr. / Piaaza Villagio (39.46993, -119.83415)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
South Central, NV Washoe Co. United States	Piazza Villagio / Vista Favoloso (39.47002, -119.83304)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Parker, CO Douglas Co. United States	Cross Canyon Trl. / Canyon Forge Dr. (39.47008, -104.85988)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019).
Reisterstown, MD Baltimore Co. United States	Long Ridge Rd. / Barto Ln. (39.47055, -76.73195)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
Saint Clair, OH Butler Co. United States	Wayne Madison Rd. / Trenton Rd. (39.47196, -84.47733)	Roundabout Existing	All-Way Yield Other	4 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, unspecified)	2021	Egg shaped. ICD = 205 ft x 180 ft. Railroad crossing approximately 900 feet to south with railroad queue detection on south leg of roundabout to limit roundabout blockage.
Middletown, DE New Castle Co. United States	W Middlepark Dr. / Idlewyld Dr. (39.47243, -75.70326)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Castle Pines, CO Douglas Co. United States	W Castle Pines Pkwy. / Pine Ridge Ln. / Buffalo Trl. (39.47283, -104.91386)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4238	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2008-2010). ICD estimated from Google Maps linework.
Bel Air South, MD Harford Co. United States	Abingdon Rd. / Dunbarton Dr. / Box Hill S Pkwy. (39.47491, -76.30092)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.8134	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
Fairmont, WV Marion Co. United States	WV 273 (State St.) / Haymond St. (39.47601, -80.13599)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Detectable warning surfaces along entire length of narrow pedestrian ramp.
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.
Middletown, DE New Castle Co. United States	Marl Pit Rd. / Cedar Lane Rd. (39.47762, -75.70312)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.middletowntranscript.com/story/news/2020/07/13/deldot-hopes-new-marl-pit-cedar-lane-roundabout-will-help-with-traffic/112217478/
Middletown, DE New Castle Co. United States	Neverland Dr. / Whitebird Dr. / Carrick Ct. (39.47819, -75.63221)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Abingdon, MD Harford Co. United States	Tollgate Rd. / Singer Rd. (39.47828, -76.32727)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8121	Other (At-Grade) Single-Lane	1998	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Fairmont, WV Marion Co. United States	WV 273 (State St.) / Elkins St. (39.47870, -80.13730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8637	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Detectable warning surfaces along entire length of narrow pedestrian ramp.
Breckenridge, CO Summit Co. United States	S Park Ave. (CO 9) / Four O'clock Rd. (39.48043, -106.04811)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1078	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2015-2018). ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Tollgate Rd. / Montrose Way (39.48198, -76.32751)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5762	Other (At-Grade) Single-Lane	2003	Elementary school and library to north, another school to south. Functional Class: Collector ICD estimated from Google Maps linework.
Franklin, IN Johnson Co. United States	SR 144 / SR 44 / Westview Dr. (39.48248, -86.08291)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2019	Year Completed estimated (2017-2020).
Franklin, IN Johnson Co. United States	E King St. / Eastview Dr. (39.48269, -86.03241)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2018	Right-turn-only lanes on north and east legs.