Roundabouts Database Index

30321 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
Buffalo, NY Erie Co. United States	Aero Dr. / S. Youngs Rd. (42.94547, -78.72490)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.5988	Other (At-Grade) Single-Lane	2010	Year completed estimated. ICD estimated from Google Maps linework.
Grand Blanc Township, MI Genesee Co. United States	E Hill Rd. / Belsay Rd. (42.94531, -83.59820)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.1019	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Cheektowaga, NY Erie Co. United States	Harlem Rd. / Cleveland Dr. (42.94493, -78.78408)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.5872	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	ICD estimated from Google Maps linework.
Hales Corners, WI Milwaukee Co. United States	Grange Ave. / 116th St. (42.94460, -88.05808)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.2220	Other (At-Grade) Single-Lane	2003	Opened October 15, 2003. ICD estimated from Google Maps linework.
Gaines Township, MI Genesee Co. United States	Elms Rd. / Hill Rd. (42.94270, -83.81070)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 20.9830	Other (At-Grade) Single-Lane	2016	Rural. ICD estimated from Google Maps linework.
Buffalo, NY Erie Co. United States	Aero Dr. / Holtz Dr. (42.94093, -78.71780)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 27.1038	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
London, ON Middlesex Canada	Singleton Ave. / Morgan Ave. (42.93793, -81.27158)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 35.0000	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012).
Hales Corners, WI Milwaukee Co. United States	STH 24 (W Forest Home Ave.-Janesville Rd.) / W Forest Home Ave. (42.93732, -88.04641)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 48.0902	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Malta, NY Saratoga Co. United States	Curry Rd. / Round Lake Bypass (42.93726, -73.80083)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.1004	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
London, ON Middlesex Canada	Southdale Rd. W / Colonel Talbot Rd. (42.93669, -81.31730)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.cbc.ca/news/canada/london/new-roundabout-at-colonel-talbot-and-southdale-road-opens-with-1-lane-1.6986818
London, ON Middlesex Canada	Bateman Trl. / Paul Peel Ave. (42.93592, -81.25534)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2006-2009).
Malta, NY Saratoga Co. United States	Round Lake Rd. / Raylinsky Rd. (42.93576, -73.80841)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 34.1012	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Ballston Lake, NY Saratoga Co. United States	Round Lake Rd. / Chango Dr. (42.93547, -73.81398)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 32.3526	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
London, ON Middlesex Canada	Raleigh Blvd. / Tillmann Rd. (42.93469, -81.30829)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 110.0000	Other (At-Grade) Single-Lane	2010	completed 2010 based on Google historical aerials
London, ON Middlesex Canada	Morgan Ave. / Morgan Crescent / Singleton Ave. (42.93441, -81.27261)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0000	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2009-2011). Splitter islands added 2015.
New Berlin, WI Waukesha Co. United States	CTH Y (Racine Ave.) / I-43 SB Ramps (42.93426, -88.15884)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2182	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	Opened November 2009. ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Central Square: Main St. / Court St. / Washington St. / West St. (42.93403, -72.27855)	Signalized Roundabout/Circle Existing	Signal Pedestrian Signal (red-yellow-green to drivers)	6 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (3+ Lane)
Genesee, WI Waukesha Co. United States	STH 83 / CTH X (Saylesville Rd.) / Fields Crossing Dr. (42.93302, -88.34619)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.1073	Other (At-Grade) Single-Lane	2011	Opened November 23, 2011. ICD estimated from Google Maps linework.
New Berlin, WI Waukesha Co. United States	CTH Y (Racine Ave.) / I-43 NB Ramps (42.93221, -88.15884)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.9731	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	Opened November 2009. ICD estimated from Google Maps linework.
Oak Creek/Cudahy, WI Milwaukee Co. United States	E College Ave. / S Ace Industrial Dr. (42.92994, -87.88328)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.2257	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Chubbuck, ID Bannock Co. United States	Mesquite Dr. / Parklawn Dr. / (parking) (42.92905, -112.46794)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2006-2009).
Keene, NH Cheshire Co. United States	Main St. / Winchester St. / Marlboro St. (42.92849, -72.27757)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.2307	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	Functional Class: Arterial ICD estimated from Google Maps linework.
Pocatello, ID Bannock Co. United States	Olympus Dr. / Northgate Pkwy. / E Siphon Dr. (42.92794, -112.42884)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2018	Concentric striped circulatory roadway with dotted edge line around entire circumference. No splitter island on east leg. Year Completed estimated (2017-2019).
Paoli, WI Dane Co. United States	STH 69 / CR PB (42.92780, -89.52744)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	2022	https://wisdot.maps.arcgis.com/apps/webappviewer/index.html?id=106c80b1ec5f42a5a8808e6acad23067
Stoughton, WI Dane Co. United States	US 51 / Deer Point Rd. / Roby Rd. (42.92732, -89.25042)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	https://isthmus.com/events/u-s-highway-51-construction/
Keene, NH Cheshire Co. United States	Winchester St. / Pearl St. / Island St. / (parking) (42.92674, -72.28771)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2023	Combined 3 intersections: one all-way stop, one one-way stop; one one-way yield. https://www.keenewinchesterstreet.com/
Londonderry, NH Rockingham Co. United States	Raymond Wieczorek Dr. / Airport Rd. (42.92660, -71.44580)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 62.9654	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	At Manchester-Boston Regional Airport. ICD estimated from Google Maps linework.
Buffalo, NY Erie Co. United States	Soldiers Circle (Lincoln Pkwy. / Bidwell Pkwy. / Chapin Pkwy.) (42.92564, -78.87370)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 47.2248	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Rte 9 / Base Hill Rd. (42.92477, -72.31239)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 43.7273	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Winchester St. / Key Rd. / (parking) (42.92459, -72.28941)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.keenewinchesterstreet.com/
Mukwonago, WI Waukesha Co. United States	STH 83 / CTH I (River Rd.) (42.92252, -88.34597)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.3560	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Opened October 23, 2011. ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Rte. 101 / Winchester St. (42.92247, -72.29079)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4713	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Functional Class: Arterial ICD estimated from Google Maps linework.
Londonderry, NH Rockingham Co. United States	Raymond Wieczorek Dr. / Commerce Ave. / Sparks Ave. (42.92134, -71.44384)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 52.4756	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	At Manchester-Boston Regional Airport. ICD estimated from Google Maps linework.
Buffalo, NY Erie Co. United States	Gates Circle (Delaware Ave. / Lafayette Ave.) (42.92054, -78.86776)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 66.4699	Other (At-Grade) Unknown	2002	Modified in 2002 to incorporate roundabout principles. ICD estimated from Google Maps linework. 21442
Chubbuck, ID Bannock Co. United States	Chubbuck Rd. / Philbin Rd. (42.92054, -112.49601)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://localnews8.com/news/idaho/2022/04/11/philbin-chubbuck-road-intersection-to-close-for-roundabout-installation/
Chubbuck, ID Bannock Co. United States	E Chubbuck Rd. / Sacajawea Dr. (42.92042, -112.44502)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.2351	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Buffalo, NY Erie Co. United States	Colonial Circle (Richmond Ave. / Lafayette Ave.) (42.92026, -78.88171)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 71.7180	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Stoughton, WI Dane Co. United States	US 51-STH 138 / US 51 / STH 138 (42.91876, -89.24947)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	https://isthmus.com/events/u-s-highway-51-construction/
Franklin, WI Milwaukee Co. United States	(park entrance road) / (parking) (42.91866, -88.01334)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2011-2014).
Rutland, WI Dane Co. United States	STH 138 / Kettle Park Way (42.91821, -89.25204)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.4812	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Stoughton, WI Dane Co. United States	US 51-STH 138 / Hoel Ave. / Silverado Dr. (42.91814, -89.24587)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://isthmus.com/events/u-s-highway-51-construction/
Oregon, WI Dane Co. United States	STH 138 / US 14 EB Ramps (42.91774, -89.36817)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1083	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	STH 138 / US 14 WB Ramps (42.91764, -89.36607)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2309	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Grand Blanc, MI Genesee Co. United States	E Grand Blanc Rd. / Embury Rd. (42.91693, -83.64652)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.abc12.com/news/grand-blanc-road-reopens-following-roundabout-construction-project/article_39b8087a-3083-5a44-b841-c1872cfd8918.html.
Phelps, NY Ontario Co. United States	Fort Hill Rd. / McIvor Rd. / CR 23 (42.91672, -77.04341)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2019	https://www.fltimes.com/news/ontario-county-s-newest-roundabout-opens-in-phelps/article_3fe5e190-49db-5f3b-a42f-7da6c3073a08.html .
Lake Eastbrook, MI Kent Co. United States	Lake Eastbrook Blvd. SE / Sparks Dr. SE (42.91585, -85.57470)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2022
Chubbuck, ID Bannock Co. United States	N Hiline Rd. / Mallard St. (42.91435, -112.45179)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.2383	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Year Completed estimated (2009-2011). ICD estimated from Google Maps linework.
Swartz Creek, MI Genesee Co. United States	Grand Blanc Rd. / Linden Rd. (42.91411, -83.77008)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021
Swartz Creek, MI Genesee Co. United States	Grand Blanc Rd. / Morrish Rd. (42.91289, -83.83040)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://swartzcreekview.mihomepaper.com/articles/traffic-circle-construction-underway-bridge-work-set-to-begin/
Muskego, WI Waukesha Co. United States	Woods Rd. / Moorland Rd. / Durham Dr. (42.91086, -88.09789)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2021).
Fort Erie, ON Niagara Canada	Queen St. / Goderich St. (42.90951, -78.91385)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.7419	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Grand Blanc, MI Genesee Co. United States	S Dort Hwy. / I-75 NB Ramps (42.90822, -83.64880)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2020	https://www.mlive.com/news/flint/2020/11/dort-highway-extension-roundabouts-now-open-to-traffic.html
Swanzey, NH Cheshire Co. United States	Monadnock Hwy (Hwy 12) / Lake St. / Swanzey Factory Rd. (42.90817, -72.25933)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.6156	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Pocatello, ID Bannock Co. United States	Hurley Dr. / Pole Line Rd. (42.90782, -112.46041)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1149	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Franklin, WI Milwaukee Co. United States	Drexel Ave. / Shoppes of Wyndham driveway (42.90494, -88.03474)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.3700	Other (At-Grade) Single-Lane	2008	Opened July 2008. ICD estimated from Google Maps linework.
Fleming, NY Cayuga Co. United States	W Lake Rd. / White Bridge Rd. / Lake Ave. / Sand Beach Rd. / (park access) (42.90470, -76.54446)	Rotary Existing	Other None	5 Approaches 0 Driveways 109.7280	Other (At-Grade) Single-Lane		Mixture of Yield and Stop signs.
Grand Blanc, MI Genesee Co. United States	S Dort Hwy. / I-75 SB Ramps (42.90437, -83.65300)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2020	https://www.mlive.com/news/flint/2020/11/dort-highway-extension-roundabouts-now-open-to-traffic.html
Grand Blanc, MI Genesee Co. United States	E Cook Rd. / Dort Hwy. (42.90188, -83.65195)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.mlive.com/news/flint/2020/11/dort-highway-extension-roundabouts-now-open-to-traffic.html
Canandaigua, NY Ontario Co. United States	CR 10 / CR 4 (42.90187, -77.24570)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.2451	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Franklin, WI Milwaukee Co. United States	S 51st St. / W Drexel Ave. (42.90151, -87.98018)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2019
Bennington, VT Bennington Co. United States	Rte 7A / Willma St. (42.89936, -73.20987)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2016	https://www.benningtonbanner.com/archives/northside-drive-roundabout-open-to-traffic/article_28eed74c-dc7f-5ce0-a331-ef606872868c.html
Buffalo, NY Erie Co. United States	Porter Ave. / I-190 NB On-Ramp / Sheridan Terr. (42.89887, -78.89722)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 37.6213	Freeway Ramps (Grade-Separated) Single-Lane	2016	ICD estimated from Google Maps linework.
Fort Erie, ON Niagara Canada	Lakeshore Rd. / Dominion Rd. (42.89540, -78.92324)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.0000	Other (At-Grade) Single-Lane	2022	https://www.niagararegion.ca/projects/dominion-road/default.aspx
Peterborough, NH Hillsborough Co. United States	Monadnock Community Hospital entrance / parking areas (42.89412, -71.93811)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.3743	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Grand Rapids, MI Kent Co. United States	Pfeiffer Woods Dr. / (unknown) (42.89293, -85.59628)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.9999	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Peterborough, NH Hillsborough Co. United States	Old Street Rd. / Parmalee Dr. / Monadnock Community Hospital entrance (42.89272, -71.93790)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.3750	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Derry, NH Rockingham Co. United States	Rte 28 (N Main St.-Londonderry Turnpike) / E Broadway / Chester Rd. / E Derry Rd. (42.89225, -71.31208)	Other Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 33.2503	Other (At-Grade) Single-Lane		Pedestrian access to central island. No splitter islands. ICD estimated from Google Maps linework.
Canandaigua, NY Ontario Co. United States	CR 10 / CR 46 (42.88665, -77.24563)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.5031	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Buffalo, NY Erie Co. United States	Niagara Square (42.88642, -78.87815)	Other Existing	Other Other	7 Approaches 0 Driveways 115.5118	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Canandaigua, NY Ontario Co. United States	CR 46 / Smith Rd. (42.88614, -77.22771)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2020-2023).
Brattleboro, VT Windham Co. United States	Rte 9 / Rte 5 (42.88500, -72.55670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1999	Adjacent to I-89. Heavy truck volume (>7%).
Peterborough, NH Hillsborough Co. United States	NH 101 / Shaw's Plaza entrance (42.87519, -71.96153)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 28.0080	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Kentwood, MI Kent Co. United States	Breton Rd. SE / Walma Ave. SE (42.87452, -85.59791)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1371	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Swanzey, NH Cheshire Co. United States	Old Homestead Hwy. (NH 32) / Sawyer's Crossing Rd. (42.87428, -72.28155)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/roundabout-pho-swanzey40485.pdf
Londonderry, NH Rockingham Co. United States	Michels Way / First Ave. (42.87405, -71.35055)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018).
Londonderry, NH Rockingham Co. United States	Michels Way / Main St. (42.87228, -71.35008)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019).
Clifton Park, NY Saratoga Co. United States	Rte 146 / Rte 146A / Vischer Ferry Rd. (42.87020, -73.82034)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.7660	Other (At-Grade) Multilane (2 Lane, unspecified)	2019	https://wnyt.com/news/last-phase-of-construction-underway-at-clifton-park-roundabout-route-146-route-146a-vischer-ferry-road/5528433/ ICD estimated from Google Maps linework.
Merrimack, NH Hillsborough Co. United States	Baboosic Lake Rd. / Turkey Hill Rd. (42.86727, -71.51565)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2021	https://www.facebook.com/merrimacktv/videos/turkey-hill-baboosic-lake-rd-roundabout-now-complete/730203548391115/
Schenectady, NY Schenectady Co. United States	Rte 29 / Glenridge Rd. (42.86709, -73.90634)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.7653	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Buffalo, NY Erie Co. United States	Fuhrmann Blvd. / Outer Harbor Dr. (42.86220, -78.87408)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.3945	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Amesbury, MA Essex Co. United States	Market St (Rte 150) / Elm St / Main St (Rte 150) / High St (42.85794, -70.93010)	Traffic Calming Circle Existing	Other None	4 Approaches 0 Driveways 13.1324	Other (At-Grade) Single-Lane		On-Street parking in the traffic circle ICD estimated from Google Maps linework.
Muskego, WI Waukesha Co. United States	CTH Y (Racine Ave.) / Kelsey Dr. (42.85757, -88.15911)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.6425	Other (At-Grade) Single-Lane	2009	Opened November 9, 2009. ICD estimated from Google Maps linework.
Amesbury, MA Essex Co. United States	Friend St / School St (Rte 150) / Allens Ct (42.85615, -70.93410)	Roundabout Existing	Other None	4 Approaches 0 Driveways 26.2656	Other (At-Grade) Single-Lane	2001	North leg stop-controlled. Fire station on south leg. Resurfaced on 2017. ICD estimated from Google Maps linework.
Whitewater, WI Jefferson Co. United States	Burr Oak Trl. / N Acorn Ridge (42.85569, -88.74258)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.6434	Other (At-Grade) Single-Lane	2007	Opened October 2007. Functional Class: Local ICD estimated from Google Maps linework.
(unincorporated), WI Dane Co. United States	US 14 / STH 92 / Biglow Rd. (42.85434, -89.34080)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://www.channel3000.com/u-s-highway-14-to-close-between-oregon-brooklyn-starting-next-week/
Whitewater, WI Jefferson Co. United States	Burr Oak Trl. / (unknown) (42.85222, -88.74105)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.7695	Other (At-Grade) Single-Lane	2007	Opened November 2007. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, MI St. Clair Co. United States	Gratiot Ave. / Palms Rd. (42.85156, -82.63709)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.thetimesherald.com/story/news/2021/09/29/roundabout-palms-gratiot-open-traffic-week-columbus-twp/5913286001/
Tillsonburg, ON Oxford Canada	Vienna Rd. (Hwy 19) / Talbot Rd. (Hwy 3) (42.84913, -80.72222)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.5272	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2013-2016). ICD estimated from Google Maps linework.
Schenectady, NY Schenectady Co. United States	Balltown Rd. / Aqueduct Rd. / Williams St. (42.84861, -73.88891)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 51.6619	Other (At-Grade) Single-Lane	2016	Scheduled to be converted to 2 lanes in Dec. 2017. ICD estimated from Google Maps linework.
Bishkek, Bishkek Kyrgyzstan	(unknown) (42.84452, 74.52832)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Lackawanna, NY Erie Co. United States	McKinley Pkwy. / Choate Ave. / Red Jacket Pkwy. (42.84436, -78.81496)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 138.3584	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Nakhodka, Primorye Nakhodka Russia	Nakhimovskiy prospekt / ulitsa Shevchenko / Pereval'naya ulitsa (42.84359, 132.91834)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Bishkek, Bishkek Bishkek Kyrgyzstan	Shabdan Baatyr St. / Akhunbayev St. (42.84171, 74.63644)	Unknown Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Buffalo, NY Erie Co. United States	Tifft St. / Rte 5 NB Ramps (42.83952, -78.85611)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.4029	Freeway Ramps (Grade-Separated) Single-Lane	2010	ICD estimated from Google Maps linework.
Nakhodka, Primorye Nakhodka Russia	Obkhodnaya magistral' (42.83658, 132.87868)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Fulton, WI Rock Co. United States	STH 59 / I-39 SB Ramps (42.83635, -89.02979)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.4238	Freeway Ramps (Grade-Separated) Single-Lane	2016	ICD estimated from Google Maps linework.
Fulton, WI Rock Co. United States	STH 59 / I-39 NB Ramps (42.83577, -89.02705)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.5420	Freeway Ramps (Grade-Separated) Single-Lane	2016	ICD estimated from Google Maps linework.
Fulton, WI Rock Co. United States	STH 59 / E Richardson Springs Rd. / N Goede Rd. (42.83490, -89.02549)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.3008	Other (At-Grade) Single-Lane	2016	Previously had I-39 NB Ramps attached; these have been relocated to new roundabout to the west of this roundabout. ICD estimated from Google Maps linework.
Merrimac, MA Essex Co. United States	Main St (Rte 110) / Church St / School St (42.83371, -71.00250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2015	aka Merrimac Square, off-street parking used on two quadrants
Lackawanna, NY Erie Co. United States	McKinley Pkwy. / Dorrance Ave. / Vincent Ave. (42.83200, -78.81520)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 30.6551	Other (At-Grade) Single-Lane	2010	Restriped as single-lane roundabout. ICD estimated from Google Maps linework.