| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Lennoxville,
                QC Sherbrooke Canada | Rte 108 / Autoroute 410 WB Onramp (45.35581, -71.86037) | Roundabout Existing | All-Way Yield Unknown | 2 Approaches 0 Driveways 52.8732 | Freeway Ramps (Grade-Separated) Single-Lane | 2011 | Future third approach (off-ramp) stubbed. ICD estimated from Google Maps linework. | 
| Lennoxville,
                QC Sherbrooke Canada | Rte 108 / Autoroute 410 EB Offramp (45.35401, -71.86207) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 52.8749 | Freeway Ramps (Grade-Separated) Single-Lane | 2011 | Fourth leg (future on-ramp) stubbed. ICD estimated from Google Maps linework. | 
| Hatley Canton,
                QC Memphrémagog Regional County Municipality Canada | Rue Belvédère / Autoroute 410 WB Ramps (45.36010, -71.89496) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 41.9597 | Freeway Ramps (Grade-Separated) Single-Lane | 2014 | Year Completed estimated (2013-2015). ICD estimated from Google Maps linework. | 
| Hatley Canton,
                QC Memphrémagog Regional County Municipality Canada | Rue Belvédère / Autoroute 410 EB Ramps (45.35780, -71.89470) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.4437 | Freeway Ramps (Grade-Separated) Single-Lane | 2014 | Year Completed estimated (2013-2015). 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. | 
| 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. | 
| 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. | 
| Sherbrooke,
                QC Sherbrooke Canada | Rue Henri-Labonne / Boulevard René-Lévesque (45.37523, -71.99868) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 27.6860 | Other (At-Grade) Single-Lane | 2018 | https://translate.google.com/translate?hl=en&sl=fr&u=https://www.ville.sherbrooke.qc.ca/salle-de-presse/actualites/dossiers-municipaux/construction-du-boulevard-rene-levesque/ shows 2 other roundabouts on Boulevard René-Lévesque. ICD estimated from Google Maps linework. | 
| Conway,
                NH Carroll Co. United States | North-South Rd / (Walmart parking) (44.01823, -71.10901) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.2134 | Other (At-Grade) Single-Lane | 2014 | https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf ICD estimated from Google Maps linework. | 
| Lancaster,
                NH Coos Co. United States | US 2 (Main St.) / US 3 (44.49690, -71.57632) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 34.9279 | Other (At-Grade) Single-Lane | 2016 | https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf ICD estimated from Google Maps linework. | 
| Warner,
                NH Merrimack Co. United States | Rte 103 / (shopping center parking) / (service station) (43.28882, -71.83340) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.5582 | Other (At-Grade) Single-Lane | 2016 | https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf ICD estimated from Google Maps linework. | 
| Concord,
                NH Merrimack Co. United States | Manor Rd. / Abbott Rd. (43.26422, -71.57349) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2018 | https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf | 
| Macon,
                GA Bibb Co. United States | Oglethorpe St. / College St. (32.83378, -83.64483) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 17.0600 | Other (At-Grade) Single-Lane | 2014 | Year Completed estimated (2013-2015). ICD estimated from Google Maps linework. | 
| Pascagoula,
                MS Jackson Co. United States | Hospital Rd. / Old Mobile Hwy. (30.36849, -88.53333) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 88.6193 | Other (At-Grade) Single-Lane | 2017 | http://cityofpascagoula.com/482/Hospital-Road-Improvements ICD estimated from Google Maps linework. | 
| Fort Collins,
                CO Larimer Co. United States | N Taft Hill Rd. / CR 70 / CR 19 (40.75500, -105.11504) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 1 Driveways 37.0933 | Other (At-Grade) Single-Lane | 2015 | Year Completed estimated (2014-2016). ICD estimated from Google Maps linework. | 
| Naples,
                FL Collier Co. United States | Central Ave. / 8th St. (26.14718, -81.79695) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.2979 | Other (At-Grade) Single-Lane | 2016 | Elliptical shape. ICD estimated from Google Maps linework. | 
| Naples,
                FL Collier Co. United States | Central Ave. / 10th St. (26.14752, -81.79419) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.8120 | Other (At-Grade) Single-Lane | 2016 | Elliptical shape. ICD estimated from Google Maps linework. | 
| Tacoma,
                WA Pierce Co. United States | (unknown) / (unknown) (47.30214, -122.51434) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 27.5370 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2018-2019). ICD estimated from Google Maps linework. | 
| 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. | 
| Kansas City,
                MO Platte Co. United States | NW 72nd St. / NW Waukomis Dr. / N Green Hills Rd. (39.22505, -94.62750) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.2327 | Other (At-Grade) Single-Lane | 2012 | Streetview car went through just after completion while two approaches were still blocked off. ICD estimated from Google Maps linework. | 
| 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. | 
| Cambridge,
                MD Dorchester Co. United States | MD 16 (Church Creek Rd.) / Woods Rd. (38.54624, -76.06411) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 37.3636 | Other (At-Grade) Single-Lane | 2017 | https://www.myeasternshoremd.com/dorchester_star/news/roundabout-opens-at-route-and-woods-road/article_b39ae088-8f81-51a4-8dc8-94e149da66e8.html ICD estimated from Google Maps linework. | 
| Baxter,
                MN Crow Wing Co. United States | Excelsior Rd. / (unlknown) (46.35451, -94.24743) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 38.7430 | Other (At-Grade) Single-Lane | 2018 | date: not yet built in late 2017 according to https://www.brainerddispatch.com/news/4150918-baxter-city-council-2017-could-bring-excelsior-road-roundabout yet Streetview shows it complete in 2018. Fourth leg stubbed. ICD estimated from Google Maps linework. | 
| Beverly,
                MA Essex Co. United States | Essex St. / Old Essex Rd. (42.57129, -70.85769) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 24.6273 | Other (At-Grade) Single-Lane | 2018 | https://www.salemnews.com/news/local_news/essex-street-around-new-roundabout-to-be-closed-for-work/article_33d9323d-29f7-5067-a7e0-8ba022b4f125.html?psid=80AVI ICD estimated from Google Maps linework. | 
| East Longmeadow,
                MA Hampden Co. United States | Center Square (Maple St. / Shaker Rd. / Prospect St. / Somers Rd. / Pleasant St. / Elm St. / N Main St.) (42.06482, -72.51288) | Other Existing | Other Unknown | 7 Approaches 0 Driveways 31.0329 | Other (At-Grade) Single-Lane | Seven way intersection. Mixture of stop signs and yield, including yields within the circle. Appeared in Ripley's Believe It or Not: https://www.thehotiron.com/index.php/site/comments/wisconsin_roundabouts_to_a_native_massachusetts_rotary_driver ICD estimated from Google Maps linework. | |
| O'Fallon,
                IL St. Clair Co. United States | Milburn Estates Dr. / Portsmith Place Dr. (38.61138, -89.94514) | Other Existing | Uncontrolled None | 3 Approaches 0 Driveways 55.9947 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| O'Fallon,
                IL St. Clair Co. United States | Cambridge Blvd. / St Francis Way / St Elizabeth's Blvd. (38.58493, -89.93023) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.6755 | Other (At-Grade) Single-Lane | 2016 | Roundabout built by hospital. ICD estimated from Google Maps linework. | 
| Tacoma,
                WA Pierce Co. United States | N Pearl St. / Five Mile Dr. / N Waterfront Dr. / Ferry Crossing Landing Rd / Park Ave. (47.30193, -122.51556) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 32.3966 | Other (At-Grade) Single-Lane | 2018 | https://www.thenewstribune.com/news/local/article196233104.html ICD estimated from Google Maps linework. | 
| Yakima,
                WA Yakima Co. United States | N Fair Ave. / E Lincoln Ave. / N 10th St. / Bravo Company Blvd. (46.60868, -120.49385) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.0238 | Other (At-Grade) Single-Lane | 2015 | https://www.yakimawa.gov/media/news/fair-avenue-roundabout-opening-to-traffic/ ICD estimated from Google Maps linework. | 
| Raymond,
                WA Pacific Co. United States | US 101 / Henkle St. (SR 6) (46.68234, -123.73051) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.0389 | Other (At-Grade) Single-Lane | 2018 | http://www.wsdot.wa.gov/Projects/US101/SR6IntersectionAndDrainage/default.htm ICD estimated from Google Maps linework. | 
| Caldwell,
                ID Canyon Co. United States | E Ustick Rd. / Indiana Ave. (43.63363, -116.67304) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.3055 | Other (At-Grade) Single-Lane | 2013 | date: https://caldwellguardian.blogspot.com/2013/08/new-roundabout-at-ustick-and-indiana.html ICD estimated from Google Maps linework. | 
| Green,
                OH Summit Co. United States | E Turkeyfoot Lake Rd. / Pickle Rd. (40.97410, -81.47402) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 36.9707 | Other (At-Grade) Single-Lane | 2018 | https://www.whbc.com/city-opens-new-roundabout-has-plans-for-more/ ICD estimated from Google Maps linework. | 
| Monroe,
                NC Union Co. United States | N Rocky River Rd. / Monroe Expressway WB Ramps (35.06481, -80.59359) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 37.1473 | Freeway Ramps (Grade-Separated) Single-Lane | 2018 | Built as part of the Monroe Expressway (US 74 bypass) https://www.ncdot.gov/projects/monroe-expressway/Pages/default.aspx ICD estimated from Google Maps linework. | 
| Monroe,
                NC Union Co. United States | N Rocky River Rd. / Monroe Expressway EB Ramps (35.06096, -80.59214) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.1043 | Freeway Ramps (Grade-Separated) Single-Lane | 2018 | Built as part of the Monroe Expressway (US 74 bypass) https://www.ncdot.gov/projects/monroe-expressway/Pages/default.aspx ICD estimated from Google Maps linework. | 
| Gettysburg,
                PA Adams Co. United States | Lincoln Square (Chamberburg St. / York St. / Carlisle St. / Baltimore St.) (39.83092, -77.23112) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 31.1838 | Other (At-Grade) Single-Lane | Diagonal parking around circulatory roadway; pedestrian access to center island; no splitter islands. ICD estimated from Google Maps linework. | |
| Concord,
                VA Campbell Co. United States | Village Hwy. / Doss Rd. / Spring Mill Rd. (37.33438, -78.98112) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2017-2019). | 
| Upper Allen Township,
                PA Cumberland Co. United States | W Lisburn Rd. / Grantham Rd. (40.16298, -76.99018) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 1 Driveways 16.4290 | Other (At-Grade) Single-Lane | 2018 | https://www.abc27.com/news/top-video/new-traffic-circle-opens-in-upper-allen_20181003215307/1495637846 ICD estimated from Google Maps linework. | 
| Cranberry Township,
                PA Butler Co. United States | N Boundary Rd. / Marshall Rd. (40.72428, -80.10002) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 19.9129 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Dale,
                WI Outagamie Co. United States | US 45 / STH 96 (Wisconsin Rd.) (44.27234, -88.73946) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 35.0622 | Other (At-Grade) Single-Lane | 2018 | date: https://www.whby.com/2018/04/15/roundabout-project-to-start-at-hwys-45-96/# ICD estimated from Google Maps linework. | 
| Highland,
                IL Madison Co. United States | Broadway / Poplar St. (38.73957, -89.67148) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 44.7156 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2007-2009). ICD estimated from Google Maps linework. | 
| O'Fallon,
                IL St. Clair Co. United States | Milburn School Rd. / Merriam Pkwy. / Milburn Estates Dr. (38.61429, -89.94506) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.1966 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| O'Fallon,
                IL St. Clair Co. United States | Old Vincennes Trl. / Seven Hills Rd. / E State St. (38.59342, -89.89246) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.4056 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Marion,
                IL Williamson Co. United States | N Russell St. / W Boulevard St. (37.73692, -88.94186) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.8347 | Other (At-Grade) Single-Lane | 2015 | date: https://www.kfvs12.com/story/29497509/marion-to-install-roundabout-at-busy-intersection/ ICD estimated from Google Maps linework. | 
| Aurora,
                IL Kane Co. United States | Sullivan Rd. / N Highland Ave. (41.78864, -88.32894) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 28.4960 | Other (At-Grade) Single-Lane | 2016 | date: https://www.linkedin.com/pulse/new-roundabout-opens-aurora-il-kevin-kassay ICD estimated from Google Maps linework. | 
| Osceola,
                IN Elkhart Co. United States | Ash Rd. / Edison Rd. (41.69543, -86.06169) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.6718 | Other (At-Grade) Single-Lane | 2018 | date: https://www.southbendtribune.com/news/local/at-t-blamed-for-construction-delay-of-edison-ash-roundabout/article_c7e4abd2-0d4c-5cb2-9438-0d8280388751.html ICD estimated from Google Maps linework. | 
| Mont-Tremblant,
                QC Les Laurentides Regional County Municipality Canada | Rue de St-Jovite / Rue Siméon (46.11775, -74.56303) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.4923 | Other (At-Grade) Single-Lane | 2013 | Fourth approach stubbed. ICD estimated from Google Maps linework. | 
| 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. | 
| South Holland,
                IL Cook Co. United States | Cottage Grove Ave. / E 166th St. (41.59355, -87.59766) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.3301 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2007-2008). ICD estimated from Google Maps linework. | 
| Plain City,
                OH Union Co. United States | Hyland-Croy Rd. / Brock Rd. (40.16244, -83.18563) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5091 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Plain City,
                OH Union Co. United States | Hyland-Croy Rd. / Ryan Pkwy (40.16771, -83.18450) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.8557 | Other (At-Grade) Single-Lane | 2012 | Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Grove City,
                OH Franklin Co. United States | Alkire Rd. / Darby Creek Dr. (39.89552, -83.20268) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.4012 | Other (At-Grade) Single-Lane | 2016 | http://gpdgroup.com/2016/11/index-html/ ICD estimated from Google Maps linework. | 
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Mimisbrunnur / Iounnarbrunnar (64.13592, -21.74221) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 22.4035 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Mimisbrunnur / Skyggnisbraut (64.13682, -21.73933) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 33.3436 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Skyggnisbraut / Urdarbrunnur (64.13578, -21.73416) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Vikurvegur / Fossaleynir (64.14600, -21.77369) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 16.6663 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Vikurvegur / Mosavegur / Strandvegur / Korpullsstadavegur (64.15118, -21.77156) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 35.4093 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Borgavegur / Soleyjarimi (64.15041, -21.79498) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 37.4932 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Borgavegur / Spongin (64.14953, -21.78816) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 33.8491 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Spongin parking lot (64.15008, -21.78784) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 33.3277 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Borgavegur / Langirimi (64.14737, -21.78501) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 25.5190 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Hallsvegur / Langirimi (64.14056, -21.79653) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 29.1717 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Hallsvegur / Fjallkonuvegur (64.13983, -21.78927) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 32.2981 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Port Orchard,
                WA Kitsap Co. United States | SW Lake Flora Rd. / JM Dickenson Rd. SW (47.46497, -122.72410) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.9114 | Other (At-Grade) Single-Lane | 2011 | https://pugetsoundblogs.com/roadwarrior/tag/lake-flora/ ICD estimated from Google Maps linework. | 
| Bloomington,
                MN Hennepin Co. United States | W 78th St. / US 169 Frontage Rd. / (parking lot) (44.86145, -93.39441) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.5554 | Other (At-Grade) Single-Lane | 2012 | This is one of 6 roundabouts surrounding the interchange of I-494 and US 169. http://www.startribune.com/i-494-hwy-169-interchange-is-up-for-an-award/224898442/ ICD estimated from Google Maps linework. | 
| Bloomington,
                MN Hennepin Co. United States | W 78th St. / US 169 SB Offramp / I-494 WB Onramp (44.86118, -93.39598) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 34.7090 | Freeway Ramps (Grade-Separated) Single-Lane | 2012 | This is one of 6 roundabouts surrounding the interchange of I-494 and US 169. ICD estimated from Google Maps linework. | 
| Appleton,
                MD Cecil Co. United States | MD 273 (Telegraph Rd.) / Appleton Rd. (39.69858, -75.81417) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.7574 | Other (At-Grade) Single-Lane | 2016 | https://www.cecildaily.com/business/construction-to-begin-on-two-roundabouts/article_a86c04d1-1da8-5e3a-927a-8f05b09e6c57.html ICD estimated from Google Maps linework. | 
| Elkton,
                MD Cecil Co. United States | MD 281 (Red Hill Rd.) / Muddy Ln. / Kemp Ln. (39.61811, -75.79733) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 37.7202 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2017-2018) (streetview). ICD estimated from Google Maps linework. | 
| Drummondville,
                QC Drummond Regional County Municipality Canada | Rue du Pont / Rue Montplaisir / Chemin Hemming / Boulevard Saint-Charles (45.88839, -72.48190) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4336 | Other (At-Grade) Single-Lane | 2013 | https://translate.google.com/translate?hl=en&sl=fr&u=https://www.journalexpress.ca/2013/11/01/le-carrefour-giratoire-est-maintenant-ouvert/&prev=search ICD estimated from Google Maps linework. | 
| Kingsville,
                MD Baltimore Co. United States | MD 147 (Harford Rd.) / Glen Arm Rd. / Mt Vista Rd. (39.46045, -76.45652) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0397 | Other (At-Grade) Single-Lane | 2018 | https://www.baltimoresun.com/maryland/harford/aegis/ph-ag-harford-road-roundabout-20180102-story.html ICD estimated from Google Maps linework. | 
| Clements,
                MD St. Mary's Co. United States | MD 242 (Colton Point Rd.) / MD 234 (Budds Creek Rd.) (38.32656, -76.72755) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.8559 | Other (At-Grade) Single-Lane | 2017 | https://www.somdnews.com/enterprise/spotlight/clements-roundabout-intersection-open-with-improvements-for-tractors/article_05f0355a-245a-5018-b4e6-79b0c5866ed8.html ICD estimated from Google Maps linework. | 
| Hagerstown,
                MD Washington Co. United States | MD 144 (W Washington St.) / Western Maryland Pkwy. (39.64883, -77.75049) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.7839 | Other (At-Grade) Single-Lane | 2015 | https://www.wcbcradio.com/?archiv=new-roundabout-near-hagerstown ICD estimated from Google Maps linework. | 
| Princess Anne,
                MD Somerset Co. United States | MD 822 (UMES Blvd.-Hickory Rd.) / MD 675 (Somerset Ave.) (38.21930, -75.69592) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.4712 | Other (At-Grade) Single-Lane | 2015 | https://www.delmarvanow.com/story/news/local/maryland/2014/11/24/roundabout-umes-boulevard/70053440/ ICD estimated from Google Maps linework. | 
| Mosfellsbær,
                Höfuðborgarsvæðið Iceland | Reykjavegur / Jonsteigur (64.16361, -21.68868) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 34.3525 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Mosfellsbær,
                Höfuðborgarsvæðið Iceland | Þverholt / Haholt (64.16655, -21.69572) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.7058 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Lehigh Acres,
                FL Lee Co. United States | Sunshine Blvd. S / 23rd St. SW (26.59205, -81.67879) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 23.4957 | Other (At-Grade) Single-Lane | 2009 | Date: http://lehighacrescitizen.com/page/content.detail/id/506096/Mann-likes-Lehigh-s-new--roundabout--at-Sunshine-and-23rd-St-.html?nav=5100 ICD estimated from Google Maps linework. | 
| Hveragerðisbær,
                Suðurland Iceland | Rte 1 / Rte 38 / Rte 376 (63.99524, -21.19289) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 38.2263 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Langley,
                BC Greater Vancouver Canada | 232 St. / 72 Ave. / Trans Canada 1 WB On-ramp (49.13829, -122.58135) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 37.5059 | Freeway Ramps (Grade-Separated) Single-Lane | 2013 | Roundabout was part of a project to build an overpass at a rail crossing. That project was completed in 2014, but the roundabout was in operation in 2013: https://www.portvancouver.com/wp-content/uploads/2015/03/232nd-st-construction-notice-december-2013.pdf ICD estimated from Google Maps linework. | 
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Vikurvegur / Rte 1 Ramps (64.13426, -21.76538) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 42.7255 | Freeway Ramps (Grade-Separated) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Lambhagavegur / Blikastaðavegur (64.13884, -21.75433) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 29.6945 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Mímisbrunnur / Ulfarsbraut (64.13442, -21.74713) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 22.4047 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Mimisbrunnur / Gefjunabrunnur (64.13518, -21.74463) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 22.9251 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Grafarholtsbegur / Vinlandsleið (64.12549, -21.77549) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 51.0783 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Storhofoi / Grafarnoltsvegur (64.12770, -21.77774) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 32.3123 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Srothofoi / Rte 49 Offramp (64.12625, -21.78314) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 35.9623 | Freeway Ramps (Grade-Separated) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Bildshofoi / Saevarhofoi (64.12464, -21.84049) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 29.1885 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Baejarhals / Halsabraut (64.11885, -21.79844) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 27.1092 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Baejarhals / Tunguhals (64.11722, -21.78862) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 25.0254 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Baejarhals / Sudurlandsvegur Ramps (64.11401, -21.78316) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 42.2352 | Freeway Ramps (Grade-Separated) Single-Lane | ICD estimated from Google Maps linework. | |
| Reykjavik,
                Höfuðborgarsvæðið Iceland | Hadegismoar / Sudurlandsvegur Ramps (64.11384, -21.77687) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.2427 | Freeway Ramps (Grade-Separated) Single-Lane | ICD estimated from Google Maps linework. | |
| Richfield,
                WI Washington Co. United States | Holy Hill Rd. / Appleton Ave. (43.25080, -88.19111) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4466 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). ICD estimated from Google Maps linework. | 
| Sidney,
                BC Capital Canada | Ocean Ave. / Fifth St. (48.64439, -123.40030) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.0891 | Other (At-Grade) Single-Lane | 2013 | http://www.sidney.ca/Assets/Administration/2014/January+2014+Town+Talk.pdf ICD estimated from Google Maps linework. | 
| Kenora,
                ON Kenora Canada | Hwy 17 (Lakeview Dr.-Main St.) / Bernier Dr. / Veterans Dr. (49.76952, -94.49034) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.0259 | Other (At-Grade) Single-Lane | 2008 | http://wilcosuperior.ca/project/big-spruce-project-stage-1 ICD estimated from Google Maps linework. | 
| Trenton,
                ON Hastings Canada | Hwy 33 (Trenton-Frankfort Rd. - Trenton St.) / Telephone Rd. / Stockdale Rd. (44.11770, -77.59804) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.7266 | Other (At-Grade) Single-Lane | 2011 | https://activerain.com/blogsview/2514745/trenton-gets-a-roundabout ICD estimated from Google Maps linework. | 
| Trenton,
                ON Hastings Canada | Hwy 22 (Hamilton Rd.) / RCAF Rd. (44.13179, -77.55946) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.4310 | Other (At-Grade) Single-Lane | 2014 | https://www.northumberlandnews.com/news-story/4738842-second-roundabout-under-way/ ICD estimated from Google Maps linework. | 
| Truro,
                NS Colchester Canada | Robie St. / Hwy 102 NB ramps (45.36736, -63.31824) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 43.6325 | Freeway Ramps (Grade-Separated) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| Boothbay,
                ME Lincoln Co. United States | Wiscasset Rd. (Rte 27) / Common Dr. / Corey Ln. (43.87517, -69.63386) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.4373 | Other (At-Grade) Single-Lane | 2018 | https://lcnme.com/currentnews/damariscotta-contractor-wins-statewide-award-for-boothbay-roundabout/ replaced two T-intersections. ICD estimated from Google Maps linework. | 
| Wilsonville,
                OR Clackamas Co. United States | SW Villebois Dr. / SW Costa Cir. (45.31264, -122.79111) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.5145 | Other (At-Grade) Single-Lane | 2014 | Year Completed estimated (2014-2015). ICD estimated from Google Maps linework. | 
| Arlington,
                TX Tarrant Co. United States | Eden Rd. / New York Ave. (32.62701, -97.07211) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2018 | Right-turn bypass lanes on east and north legs. Fourth approach stubbed. https://www.arlingtontx.gov/news/my_arlington_t_x/news_stories/eden_road_new_york_avenue_now_complete. | 
| East Hampton,
                NY Suffolk Co. United States | East Hampton Sag Harbor Tpke (Hwy 114) / Toilsome Ln. (40.96028, -72.20192) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 19.8421 | Other (At-Grade) Single-Lane | 2018 | Aug 2018 Streetview shows construction almost complete. ICD estimated from Google Maps linework. |