| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Casper,
                WY Natrona Co. United States | Jasper Dr. / Preserve Cir. (42.82867, -106.28915) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands on three legs. | |
| Cheyenne,
                WY Laramie Co. United States | (unknown) / (parking) (41.10110, -104.78426) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2019-2021). | 
| Cheyenne,
                WY Laramie Co. United States | (unknown) / (parking) (41.10103, -104.78019) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2019-2021). | 
| Houston,
                TX Harris Co. United States | Point Park Dr. / (unknown) (29.90706, -95.63522) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Farmville,
                VA Prince Edward Co. United States | Farmville Rd. / Kingsville Rd. (37.24605, -78.44392) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Opened August 17, 2022. https://www.farmvilleherald.com/2022/08/kingsville-roundabout-finally-open/ | 
| Niagara Falls,
                ON Niagara Canada | Victoria Ave. / Bridge St. / Thorold Stone Rd. (43.10884, -79.07338) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 64.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.youtube.com/watch?v=PJwDZ6g8cT0 | 
| St Joseph,
                MO Buchanan Co. United States | Robidoux St. / 8th St. (39.76984, -94.85063) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 2015 | Year Completed estimated (2014-2015). https://www.newspressnow.com/opinion/editorials/progress-in-a-roundabout-way/article_3dba548e-dbbf-11ec-9a02-6faad919c23d.html | 
| Auraria,
                CO Denver Co. United States | Saint Francis Way / 11th St. (39.74196, -105.00110) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Denver,
                CO Arapahoe Co. United States | S Yosemite St. / E Wesley Dr. (39.67305, -104.88513) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Saddle Rock East,
                CO Arapahoe Co. United States | E Roxbury Dr. / S Wenatchee Way (39.58699, -104.72125) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Potomac,
                MD Montgomery Co. United States | Broad Green Dr. / Clagett Farm Dr. (39.04566, -77.19669) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Marana,
                AZ Pima Co. United States | N Sandario Rd. / W Twin Peaks Rd. (32.38076, -111.21671) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.maranaaz.gov/news/2022/5/25/traffic-alert-construction-on-a-new-roundabout-located-at-the-twin-peaks-and-sandario-road-intersection | 
| Carpinteria,
                CA Santa Barbara Co. United States | Ogan Rd. / Via Real / US 101 NB On-Ramp (34.40144, -119.51551) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Freeway Ramps (Grade-Separated) Single-Lane | 2020 | https://www.coastalview.com/news/roadways-open-with-improvements/article_979e3586-c6f1-11ea-bc84-b3d50932177b.html | 
| Lima,
                OH Allen Co. United States | Market St. / Main St. (40.73998, -84.10498) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.hometownstations.com/news/more-downtown-parking-being-added-now-that-roundabout-in-limas-town-square-is-open/article_b354ae8e-085a-11ed-8496-e7e7595f316f.html [Note: previous intersection looked somewhat like a roundabout. Not quite round and it had stop signs on the N-S approaches and only pedestrian stop lights on E-W approaches.] | 
| Redland,
                MD Montgomery Co. United States | Columbus Ave. / Gramercy Blvd. (39.12362, -77.16494) | Other Existing | All-Way Stop Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / West Wing Way (39.50248, -77.65503) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / Midlothian Way (39.50117, -77.65254) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Boonsboro,
                MD Washington Co. United States | Monument Dr. / East Wing Way (39.50047, -77.65002) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Hammond,
                IN Lake Co. United States | E Gostlin St. / Sheffield Ave. (41.63211, -87.51847) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2021-2022). | 
| Gum Spring,
                VA Louisa Co. United States | US 250 (Broad Street Rd.) / US 522 (Cross Country Rd.) (37.77548, -77.89690) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | |
| Oljato-Monument Valley,
                UT San Juan Co. United States | US 163 / Monument Valley Rd. (37.00424, -110.17341) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2019 | https://www.nhonews.com/news/2018/jun/19/oljato-community-breaks-ground-roundabout-road-nav/ | 
| Marriottsville,
                MD Howard Co. United States | Sand Hill Rd. / Sand Hill Manor Dr. / Mount View Rd. (39.31018, -76.93043) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 1998 | Year Completed estimated (1993-2002). | 
| Castle Rock,
                CO Douglas Co. United States | S Ridge Rd. / Rapport Dr. (39.35511, -104.81475) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2020 | |
| Castle Rock,
                CO Douglas Co. United States | Autumn Sage St. / Valley View Dr. (39.38026, -104.81919) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 62.4840 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). | 
| Castle Rock,
                CO Douglas Co. United States | N Rocky View Rd. / Valley View Rd. / High Point Rd. (39.38189, -104.81125) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 62.4840 | Other (At-Grade) Single-Lane | 2016 | Year Completed estimated (2015-2017). | 
| 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). | 
| 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). | 
| Windermere,
                FL Orange Co. United States | Bridgewater Crossings Blvd. / Falcon Centre Ave. / Village Lakeview Ave. (28.47916, -81.59135) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2007 | Painted splitter islands. | 
| Longmeadow,
                MA Hampden Co. United States | E Greenwich Rd. / Normandy Rd. (42.06791, -72.56661) | Other Existing | Uncontrolled Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Marion,
                IA Linn Co. United States | County Home Rd. / C Ave. Extension (42.09487, -91.64848) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | https://cbs2iowa.com/news/local/county-home-road-reopens-in-linn-county-after-improvement-project | 
| Marion,
                IA Linn Co. United States | County Home Rd. / Alburnett Rd. (42.09450, -91.61904) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2019-2020). | 
| Hanover,
                PA York Co. United States | E Walnut St. / Keagy Ave. (39.82267, -76.97161) | Other Existing | Uncontrolled Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Hanover,
                PA York Co. United States | E Walnut St. / Hollywood Ave. (39.82089, -76.97224) | Other Existing | Uncontrolled Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Rockford,
                IL Winnebago Co. United States | Lyford Rd. / (medical center entrance) (42.31307, -88.95526) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.9600 | Other (At-Grade) Single-Lane | 2018 | Yielding right-turn bypass lanes on south and east legs. Year Completed estimated (2018-2019). | 
| Anacortes,
                WA Skagit Co. United States | 32nd St. / M Ave. (48.49641, -122.61753) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.goskagit.com/anacortes/news/federally-funded-roundabout-opens-at-32nd-and-m-in-anacortes/article_481122ae-2328-11ed-bc4e-6bf692cd6133.html | 
| Mansfield,
                OH Richland Co. United States | Mansfield-Lucas Rd. / Illinois Ave. / E Cook Rd. (40.73380, -82.48583) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Opened August 11, 2022. https://www.richlandsource.com/business/community_development/roundabout-at-cook-illinois-mansfield-lucas-to-be-opened-thursday-at-10-a-m/article_1ff0124e-18e7-11ed-aa9f-0f857334eaa6.html | 
| James City,
                NC Craven Co. United States | Terminal Dr. / Airline Dr. / (parking) (35.07889, -77.03292) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Only 2 approaches but 4 exits. Year Completed estimated (2019-2022). | 
| Palm Beach Gardens,
                FL Palm Beach Co. United States | Campus Dr. / Fairchild Ave. (26.84129, -80.08277) | Other Existing | Uncontrolled None | 4 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 2021 | Pedestrian crossings next to circulatory roadway. Year Completed estimated (2021-2022). | 
| Red Deer,
                AB Division 8 Canada | Signet Close / Seneca Dr. (52.23689, -113.82224) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2016-2017). | 
| Thief River Falls,
                MN Pennington Co. United States | STH 32 / CSAH 16 (Mark Blvd. - 125th Ave. NE) (48.09335, -96.19746) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2020 | |
| Troy,
                AL Pike Co. United States | University Ave. / Luther Dr. (Veterans Memorial Dr.) (31.79810, -85.95395) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2022). | 
| Watertown,
                NY Jefferson Co. United States | Gaffney Dr. / Commerce Park Dr. / Western Blvd. (43.98164, -75.94248) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2020 | |
| Willmar,
                MN Kandiyohi Co. United States | US 12 / 30th St. SW (CR 5) (45.12227, -95.08369) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2021). https://www.dot.state.mn.us/d8/projects/willmarwye/index.html | 
| Willmar,
                MN Kandiyohi Co. United States | US 12 / (unknown) (45.12091, -95.09405) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2021). https://www.dot.state.mn.us/d8/projects/willmarwye/index.html | 
| Kristianstad,
                Skåne County Kristianstad Sweden | Fredriksdalsvägen / Arkelstorpsvägen (56.06148, 14.16988) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Palm Coast,
                FL Flagler Co. United States | Pinnacles Dr. / Pinnacles Dr. (29.47417, -81.19097) | Other Existing | Unknown Unknown | 2 Approaches 4 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Red Deer County,
                AB Division 8 Canada | Laura Ave/Liberty Ave (52.21374, -113.82382) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.0000 | Other (At-Grade) Single-Lane | 2017 | |
| Pullman,
                WA Whitman Co. United States | SR 27 / Whelan Rd. (46.75994, -117.16896) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 32.0037 | Other (At-Grade) Single-Lane | 2022 | Opened August 2022. Developer mitigation project. | 
| Poplar,
                MT Roosevelt Co. United States | US 2 / 13th Ave. E (48.11433, -105.17243) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2019 | https://www.roundupweb.com/story/2019/12/04/news/us-2-poplar-construction-winds-down/13182.html | 
| Albemarle,
                NC Stanly Co. United States | Ridge St. / Carter Acres Rd. (35.40272, -80.15689) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2022). | 
| Albemarle,
                NC Stanly Co. United States | Ridge St. / Mountain View Church Rd. (35.39623, -80.15732) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2019-2022). | 
| Blackshear,
                GA Pierce Co. United States | County Farm Rd. / Alabama Woods Dr. (31.34834, -82.22002) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2017-2022). | 
| Bowling Green,
                KY Warren Co. United States | Parkside Ct. / Cove Dr. (36.99073, -86.47131) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 22.8600 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2018-2022). | 
| Bowling Green,
                KY Warren Co. United States | N Sunrise Dr. / Cove Dr. / Woodway St. (36.99346, -86.47154) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.8600 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2018-2022). | 
| China,
                MI St. Clair Co. United States | Fred W Moore Hwy. / Wadhams Rd. (42.81537, -82.55479) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2022). | 
| Columbus,
                MS Lowndes Co. United States | Military Rd. / US 82 EB Ramps (33.51801, -88.41368) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Single-Lane | 2020 | https://cdispatch.com/news/2020-11-19/military-road-roundabout-project-to-reach-completion-by-end-of-november/ | 
| Columbus,
                MS Lowndes Co. United States | Military Rd. / US 82 WB Ramps (33.51915, -88.41193) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Single-Lane | 2020 | https://cdispatch.com/news/2020-11-19/military-road-roundabout-project-to-reach-completion-by-end-of-november/ | 
| Dahlonega,
                GA Lumpkin Co. United States | GA 9 (Dawsonville Hwy.) / GA 52 (34.52029, -84.04569) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2021 | |
| Fond du Lac,
                WI Fond Du Lac Co. United States | Fond du Lac Ave. / Rienzi Rd. / National Ave. (43.76212, -88.42196) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2021 | Combined two T-intersections. Year Completed estimated (2020-2021). | 
| Hoschton,
                GA Barrow Co. United States | GA 211 / Old Hog Mountain Rd. / Covered Bridge Rd. (34.06993, -83.78637) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | |
| Banja Luka,
                Serb Republic Banja Luka Bosnia and Herzegovina | Trive Amelice / Dr Mladena Stojanovica (44.78446, 17.20376) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Riverview,
                FL Hillsborough Co. United States | Pavilion Palms Cir. / Pavilion Palms Cir. (27.91604, -82.35103) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Pinecrest West Park,
                FL Hillsborough Co. United States | Woodland Corporate Blvd. / (parking) (28.02159, -82.51890) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2000 | Year Completed estimated (1998-2002). | 
| Westchase,
                FL Hillsborough Co. United States | Tree Tops Lake Rd. / Tree Tops Lake Rd. (28.05761, -82.59971) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter island on east leg. | |
| Florida Center,
                FL Orange Co. United States | Grand Palm Dr. / Overlook Ct. (28.47014, -81.45272) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2018 | |
| Orlando,
                FL Orange Co. United States | Hillside Ave. / Ridgewood St. (28.54655, -81.35393) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Orlando,
                FL Orange Co. United States | N Forest Ave. / Ridgewood St. (28.54655, -81.35515) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Orlando,
                FL Orange Co. United States | N Glenwood Ave. / Bidwell St. (28.54680, -81.35296) | Other Existing | All-Way Yield Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Lake Frendrica,
                FL Orange Co. United States | Calais Way. / (unknown) (28.51201, -81.30806) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Pershing,
                FL Orange Co. United States | (unknown) (28.49767, -81.29662) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Villages at Eastwood,
                FL Orange Co. United States | Golfway Blvd. / Cavan Ln. (28.53207, -81.17764) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Novi,
                MI Oakland Co. United States | Gateway Rd. / Woodstone Ln. (42.52271, -83.49676) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Wixom,
                MI Oakland Co. United States | W Chambers St. / Johanna Ware W (42.52579, -83.53382) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Maple Ash,
                AZ Maricopa Co. United States | W 9th St. / S Maple Ave. (33.42046, -111.94122) | Traffic Calming Circle Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Maple Ash,
                AZ Maricopa Co. United States | W 9th St. / S Ash Ave. (33.42048, -111.94237) | Traffic Calming Circle Existing | All-Way Stop Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Maple Ash,
                AZ Maricopa Co. United States | W 11th St. / S Maple Ave. (33.41763, -111.94123) | Traffic Calming Circle Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Maple Ash,
                AZ Maricopa Co. United States | W 12th St. / S Maple Ave. (33.41619, -111.94121) | Traffic Calming Circle Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Billings,
                MT Yellowstone Co. United States | Central Ave. / 56th St. W (45.76970, -108.65917) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.mdt.mt.gov/pubinvolve/56thRoundabouts/ | 
| Helena,
                MT Lewis and Clark Co. United States | Lincoln Rd. / N Montana Ave. (46.70444, -112.02096) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.ktvh.com/news/lincoln-road-roundabout-opens-to-drivers | 
| Woodbourne-Hyde Park,
                OH Montgomery Co. United States | Mad River Rd. / W Alex Bell Rd. (39.65510, -84.19420) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.whio.com/news/local/washington-twp-roundabout-set-open-within-next-week/JEWIGLMTEBBDXJ3PZ2QO3ILVQ4/ | 
| Enoch,
                UT Iron Co. United States | SR 130 (N Minersville Hwy.)  / E Midvalley Rd. (37.76474, -113.05532) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Completed November 2021. | 
| Derwood,
                MD Montgomery Co. United States | Achille Ln. / Heartwood Dr. (39.12925, -77.11543) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Derwood,
                MD Montgomery Co. United States | Coppelia Dr. / Toboggan Ln. (39.13566, -77.11938) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Olney,
                MD Montgomery Co. United States | Martins Dairy Cir. / Old Baltimore Rd. (39.13345, -77.07382) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Painted splitter islands. | |
| Wheaton,
                MD Montgomery Co. United States | Park Vista Dr. / Wintergate Dr. / Longmeade Crossing Dr. (39.10755, -77.05340) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2020 | Painted splitter islands added 2020. | 
| Ashton,
                MD Montgomery Co. United States | Harbour Town Dr. / Grand Cypress Ct. (39.13205, -77.00407) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Rome,
                Latium Rome Italy | Piazza Eugenio Montale (41.80986, 12.47029) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Belton,
                MO Cass Co. United States | Loch Lloyd Pkwy. / Argyle Dr. (38.84299, -94.59884) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2015 | Year Completed estimated (2015-2016). | 
| Madera,
                CA Madera Co. United States | Root Creek Pkwy. W / Riverstone Blvd. SE (36.91441, -119.80757) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2020). | 
| Madera,
                CA Madera Co. United States | Riverstone Blvd. SE / Market Ave. W (36.91787, -119.80758) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2020). | 
| Madera,
                CA Madera Co. United States | Market Ave. W / Mission Dr. (36.91788, -119.81209) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2020). | 
| Madera,
                CA Madera Co. United States | Riverstone Blvd. SW / Market Ave. W (36.91791, -119.81547) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2018-2020). | 
| Madera,
                CA Madera Co. United States | Market Ave. W / Lodge Rd. (36.91915, -119.80219) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2017 | |
| Madera,
                CA Madera Co. United States | Root Creek Pkwy. W / Riverstone Blvd. SW (36.90613, -119.81664) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2021-2022). | 
| Woodlake,
                CA Tulare Co. United States | E Sierra Ave. / Castle Rock St. (36.42102, -119.08984) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2022 | |
| Lake Country,
                BC Central Okanagan Canada | Oceola Rd. - Okanagan Centre Rd. E / Lake Hill Dr. (50.06064, -119.41844) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.0000 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2019). | 
| Elgin,
                IL Kane Co. United States | SR 47 / Plato Rd. (42.01941, -88.46401) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2019-2020). | 
| Manistee Township,
                MI Manistee Co. United States | US 31 / M-22 (44.28494, -86.24281) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://upnorthlive.com/news/local/roundabout-opens-in-manistee-township | 
| Mankato Township,
                MN Blue Earth Co. United States | STH 83 / 586th Ave. (44.14513, -93.93894) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2017 | Merging right-turn bypass lanes on north and east legs. Year Completed estimated (2015-2018). | 
| Morrisburg,
                ON Stormont (Dundas & Glengarry) Canada | CR 2 / CR 31 / Ottawa St. (44.90050, -75.18542) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2022 | Year Completed estimated (2021-2022). https://www.renewcanada.net/three-levels-of-government-mark-unveiling-of-morrisburg-roundabout/ |