Roundabouts Database Index

29616 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
Cagliari, Sardinia Cagliari Italy	Via Lungo Saline / Via dell'Idrovora (39.21551, 9.17084)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Clarksville, MD Howard Co. United States	Highland Rd. / Triadelphia Mill Rd. (39.21551, -76.97698)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2008
Sycamore Township, OH Hamilton Co. United States	Plainfield Rd. / Sycamore Rd. (39.21534, -84.39192)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 37.9388	Other (At-Grade) Single-Lane	2019	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Harpers Farm Rd. / Campus Dr. (39.21534, -76.88023)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4614	Other (At-Grade) Single-Lane	2003	Originally had 4 legs. ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Golden Straw Ln. / Long Meadow Ct. (39.21441, -76.81085)	Traffic Calming Circle Existing	Other None	3 Approaches 0 Driveways 99.0123	Other (At-Grade) Single-Lane	2000	Yield control only on west leg. ICD estimated from Google Maps linework.
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).
Gladstone, MO Clay Co. United States	NE Antioch Rd. / NE Pleasant Valley Rd. (39.21369, -94.53468)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 34.2382	Other (At-Grade) Single-Lane	2018	https://www.linecreekloudmouth.com/blog/street-improvements/ ICD estimated from Google Maps linework.
Parkville, MO Platte Co. United States	National Dr. / Ridge Rd. (39.21333, -94.70781)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 49.9696	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Oakland Mills Rd. / MD 175 SB Ramps / (unknown) (39.21308, -76.83456)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Freeway Ramps (Grade-Separated) Single-Lane	2017	Year Completed estimated (2016-2017).
Columbia, MD Howard Co. United States	Charter Dr. / (parking) (39.21273, -76.88310)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane	2013	Converted from cul-de-sac. Year Completed estimated (2011-2014).
Ellicott City, MD Howard Co. United States	Snowden River Pkwy. / MD 100 WB Ramps (39.21233, -76.79544)	Roundabout Existing	All-Way Yield Metering Signal	3 Approaches 0 Driveways 25.9105	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. Metering signal on Snowden River Pkwy approach. ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Banneker Rd. / Cul-de-sac (39.21141, -76.87041)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 17.5824	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Elkridge, MD Howard Co. United States	Elkridge Crossing Way / Doctor Patel Dr. (39.21091, -76.72512)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4634	Other (At-Grade) Single-Lane	2007	East leg stubbed for future. ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	Gary Ave. / Candlewood Dr. (39.21087, -96.61885)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.2841	Other (At-Grade) Single-Lane	1997	Considered to be the First Modern Roundabout in the State of Kansas. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Elkridge, MD Howard Co. United States	Toomey Ln. / Fairlee Rd. (39.21083, -76.71160)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 27.4320	Other (At-Grade) Single-Lane	2002
Snowmass Village, CO Pitkin Co. United States	Brush Creek Rd. / Wood Rd. / Kearns Rd. (39.21053, -106.94725)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.7620	Other (At-Grade) Single-Lane	2016	Right-turn bypass lane on south leg. ICD estimated from Google Maps linework.
Parkville, MO Platte Co. United States	MO 45 (Tom Watson Pkwy.) / National Dr. (39.21016, -94.70027)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.1210	Other (At-Grade) Single-Lane	2000	Functional Class: Arterial ICD estimated from Google Maps linework.
Snowmass Village, CO Pitkin Co. United States	Wood Rd. / Carriage Way (39.21000, -106.94756)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 40.7179	Other (At-Grade) Single-lane w/ Traversable Central Island	2016	ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	Lewis St. / (parking access) (39.20966, -94.68484)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.2845	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Trotter Rd. / South Wind Cir. (39.20956, -76.91891)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 23.1353	Other (At-Grade) Single-Lane	1997	Functional Class: Collector. Year Completed estimated (1993-2001). ICD estimated from Google Maps linework.
Elkridge, MD Howard Co. United States	Toomey Ln. / Clements Ln. (39.20950, -76.71291)	Other Existing	Unknown Unknown	2 Approaches 4 Driveways 0.0000	Other (At-Grade) Unknown		No splitter islands.
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Manor View Cir. / Milestone Manor Ct. (39.20854, -77.24868)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 WB Ramps (39.20846, -76.78294)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.3154	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Columbus, IN Bartholomew Co. United States	11th St. / Lindsey St. / Brown St. (39.20836, -85.92443)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.4206	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	At-grade rail crossing on west leg (flashers, no gates). ICD estimated from Google Maps linework.
Kansas City, MO Platte Co. United States	NW 62nd Terrace / NW Prairie View Rd. / N Chatham Ave. (39.20831, -94.64319)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Freeway Ramps (Grade-Separated) Single-Lane	2021	https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/95/360
Kansas City, MO Platte Co. United States	N Nevada Ave. / NW 62nd Pl. (39.20830, -94.74611)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Columbia, MD Howard Co. United States	Oakland Mills Rd. / Old Montgomery Rd. (39.20788, -76.83157)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2017
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 EB Ramps (39.20733, -76.78243)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.5396	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Claycomo, MO Clay Co. United States	Ford Motor Plant No 4 Rd. / (parking) (39.20602, -94.47845)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	Year Completed estimated (2012-2013). Reconfiguration of factory entrance and parking circulation.
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Stardrift Dr. (39.20560, -77.25039)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Columbia, MD Howard Co. United States	Tamar Dr. / Old Montgomery Rd. (39.20533, -76.82822)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2022	https://www.howardcountymd.gov/News090122c
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Royal Crown Dr. (39.20518, -77.25877)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Cagliari, Sardinia Cagliari Italy	Viale Armando Diaz / Via Campioni d'Italia 1969-70 / Via dei Salinieri / Via Generale Stefano Cagna / Via della Pineta (39.20491, 9.13802)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Clarksville, MD Howard Co. United States	Brighton Dam Rd. / Ten Oaks Rd. (39.20491, -76.95455)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 35.1680	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Emerald Dr. (39.20479, -77.25262)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
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.
Parkville, MO Platte Co. United States	N Nevada Ave. / Thousand Oaks Pl. (39.20318, -94.74726)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Winchester, VA Frederick Co. United States	Campus Blvd. / SR 37 SB Ramps (39.20215, -78.19348)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Freeway Ramps (Grade-Separated) Single-Lane	2015	Right-turn merging bypass lane on east leg. Truck apron much wider than circulatory roadway. Year Completed estimated (2013-2017).
Cagliari, Sardinia Cagliari Italy	Viale Poetto / Via Campioni d'Italia 1969-70 / Via Amerigo Vespucci / Viale San Bartolomeo (39.20178, 9.14142)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Unknown Multilane (2 Lane, 2x1 max)		Via Amerigo Vespucci is one-way entering; Viale San Bartolomeo is one-way exiting.
Manhattan, KS Riley Co. United States	Kimball Ave. / Grand Mere Pkwy. (39.20168, -96.63786)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.3931	Other (At-Grade) Single-Lane	2000	Completed 3/2000. Built as part of new Colbert Hills Golf Course. Fatal crash January 31, 2010. 11861-05. Functional Class: Collector ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Stevens Forest Rd. / Farewell Rd. / Night Street Hill (39.20114, -76.84781)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-lane w/ Traversable Central Island	2019
Hillsboro, VA Loudoun Co. United States	Charles Town Pike (Rte 9) / Stony Point Rd. (39.20016, -77.72763)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.washingtonpost.com/transportation/2021/07/23/virginia-hillsboro-walkable-roads-loudoun/
Columbia, MD Howard Co. United States	Owen Brown Rd. / Martin Rd. (39.19989, -76.86930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2002-2005).
Cagliari, Sardinia Cagliari Italy	Viale Salvatore Ferrara / Via Ramontana / Via Borgo Sant'Elia / Viale San Bartolomeo (39.19857, 9.14366)	Other Existing	All-Way Stop Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Carson City, NV Carson City Co. United States	Arrowhead Dr. / I-580 NB Ramps / Imus Rd. (39.19840, -119.77380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6923	Freeway Ramps (Grade-Separated) Single-Lane	2002	NB off-ramp for Carson City Freeway (I-580) and extension of Imus Road. Overpass and roundabouts completed in 2002. ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	Arrowhead Dr. / I-580 SB Ramp (39.19810, -119.77540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.7669	Freeway Ramps (Grade-Separated) Single-Lane	2002	Future SB on-ramp for Carson City Freeway (I-580). Overpass and roundabouts completed in 2002; freeway ramps completed ~2005. ICD estimated from Google Maps linework.
Hillsboro, VA Loudoun Co. United States	Charles Town Pike (Rte 9) / Hillsboro Rd. / (school access) (39.19806, -77.72000)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.washingtonpost.com/transportation/2021/07/23/virginia-hillsboro-walkable-roads-loudoun/
Kansas City, MO Platte Co. United States	NW 56th St. / N Northwood Rd. (39.19598, -94.63168)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2019
Kansas City, MO Platte Co. United States	NW Waukomis Dr. / NW Englewood Rd. (39.19588, -94.60730)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2020
Aspen, CO Pitkin Co. United States	SR 82 / Maroon Creek Rd. / Castle Creek Rd. (39.19557, -106.84025)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, unspecified)	2000
Cagliari, Sardinia Cagliari Italy	Viale Poetto / Via Lungo Saline / Via Marina Piccola (39.19421, 9.15682)	Other Existing	Other Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Mix of stop and yield control on entry.
Kansas City, MO Clay Co. United States	N Mercier St. / N Summit St. (39.19389, -94.59236)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Winchester, VA Frederick Co. United States	Conference Center Dr. / (unknown) (39.19363, -78.20051)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Hanover, MD Anne Arundel Co. United States	Ridge Rd. / Corporate Center Dr. (39.19204, -76.70216)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4719	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	Anderson Ave. / Kimball Ave. / Scenic Dr. (39.19169, -96.64167)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 62.0184	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Cradlerock Way / Homespun Dr. (39.19095, -76.83787)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.2158	Other (At-Grade) Single-Lane	2001	Completed May 21, 2001. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Bloomington, IN Monroe Co. United States	W Woodyard Rd. / N Smith Pike (39.19089, -86.58340)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2022	Series of 2 roundabouts.
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).
Bloomington, IN Monroe Co. United States	W Woodyard Rd. / N Curry Pike / W Hunter Valley Rd. (39.19027, -86.58242)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 56.3877	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	Series of 2 roundabouts. Striped out spiral in circulatory roadway. https://www.heraldtimesonline.com/story/news/traffic/2022/03/03/work-2-6-m-double-roundabout-bloomington-start-next-week/9332294002/
Long Reach, MD Howard Co. United States	Shining Oceans Way / Dried Earth Blvd. (39.18977, -76.80673)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Riverside, MO Platte Co. United States	N Woodward Rd. / NW 52nd St. (39.18892, -94.63177)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9531	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Pickering Dr. / Pickering Pl. (39.18854, -77.27173)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Manhattan, KS Riley Co. United States	4th St. / Bluemont Ave. (39.18669, -96.56160)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.6571	Other (At-Grade) Single-Lane	2010	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Winchester, VA Winchester City Co. United States	E Piccadilly St. / N East Ln. / National Ave. (39.18564, -78.16067)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.9204	Other (At-Grade) Single-Lane	2015	https://www.facebook.com/winchestervagov/posts/roundabout-at-national-avenuepiccadilly-street-intersection-is-really-beginning-/10153626945621055/. ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Club Hill Dr. / Thackery Pl. (39.18531, -77.27012)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Carson City, NV Carson City Co. United States	Northridge Dr. / Tablerock Dr. (39.18460, -119.75685)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-1999).
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).
Carson City, NV Carson City Co. United States	Northridge Dr. / Carriage Crest Dr. (39.18290, -119.75077)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	1997	Year Completed estimated (1994-1999).
Winchester, VA Winchester City United States	Mahone Dr. / Ramseur Ln. (39.18178, -78.18846)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Carson City, NV Carson City Co. United States	Northridge Dr. / Spooner Dr. (39.18150, -119.74896)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 99.9997	Other (At-Grade) Single-Lane	1997	Painted splitter islands on Northridge approaches. Year Completed estimated (1994-1999).
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.
Winchester, VA Winchester City United States	Mahone Dr. / Rhodes Cir. / Gordon Pl. / McGruder Ct. (39.18038, -78.19089)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Bloomington, IN Monroe Co. United States	N Monroe St. / W 17th St. / W Arlington Rd. (39.17914, -86.54712)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 37.0325	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Kildale Hills Terrace / Galway Bay Cir. (39.17826, -77.27643)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
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.
Kansas City, KS Wyandotte Co. United States	N 131st Dr. / Meadow Ln. (39.17638, -94.88099)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 36.5760	Other (At-Grade) Single-Lane	2003
Pasadena, MD Anne Arundel Co. United States	Creekside Village Blvd. / Oak Creek Dr. (39.16938, -76.57165)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter island on southeast leg.
Yuba City, CA Sutter Co. United States	Butte Vista Ln. / Tres Picos Ln. (39.16908, -121.64820)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 26.8524	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Cleves, OH Hamilton Co. United States	Cooper Ave. / (high school parking) (39.16904, -84.75329)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Painted splitter island on south leg.
Yuba City, CA Sutter Co. United States	Stabler Ln. / Butte Vista Ln. (39.16747, -121.64400)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2983	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Kansas City, MO Clay Co. United States	Parvin Rd. / Prather Rd. (MO Hwy 1) (39.16738, -94.55294)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2020	https://www.facebook.com/MoDOT.KansasCity/posts/project-update-the-parvin-rd-and-prather-rd-roundabout-project-in-clay-county-is/10158316265513515/
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.
Kansas City, MO Clay Co. United States	NW Briarcliff Pkwy. / MO-9 NB Ramps / NW Platte Rd. (39.16606, -94.59842)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 79.2480	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Right-turn bypass lanes on north and east quadrants.
Kansas City, MO Clay Co. United States	NW Briarcliff Pkwy. / MO-9 SB Ramps / NW Tullison Rd. / NW 38th St. (39.16472, -94.59926)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 85.3440	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012
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.
Tahoe City, CA Placer Co. United States	SR 89 / W River Rd. (39.16425, -120.14919)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2623	Other (At-Grade) Single-Lane	2019	https://flh.fhwa.dot.gov/projects/ca/truckee/ ICD estimated from Google Maps linework.
Upper Lake, CA Lake Co. United States	SR 20 / SR 29 (39.16333, -122.92095)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 36.1148	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Laddonia, MO Audrain Co. United States	US 54 / MO 19 / Hwy BB (39.16323, -91.64907)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2019	https://www.modot.org/roundabouts-us-route-54
Tahoe City, CA Placer Co. United States	SR 89 / W Lake Blvd. (39.16291, -120.14444)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.9671	Other (At-Grade) Single-Lane	2019	https://flh.fhwa.dot.gov/projects/ca/truckee/ ICD estimated from Google Maps linework.
Dover, DE Kent Co. United States	Independence Blvd. / Colony Dr. / Green Blade Dr. (39.16260, -75.55291)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.2247	Other (At-Grade) Single-lane w/ Traversable Central Island	2017	https://delawarestatenews.net/news/roundabout-realignment-way-dovers-independence-boulevard/ ICD estimated from Google Maps linework.
Riverside, MO Platte Co. United States	Argosy Casino Pkwy. / US 69 NB Ramps / NW Tremont Trafficway (39.16237, -94.62502)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 40.7455	Freeway Ramps (Grade-Separated) Single-Lane	2016	ICD estimated from Google Maps linework.
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	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.
Berryville, VA Clarke Co. United States	SR 636 (Westwood Rd) / SR 7 Business (W Main St) (39.16190, -77.99695)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.4854	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
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.
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
Carson City, NV Carson City Co. United States	E 5th St. / Fairview Dr. (39.16090, -119.72790)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	1999
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.
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.
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.