| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Oxford,
                England Oxfordshire United Kingdom | Watlington Rd. / Grenoble Rd. (51.72147, -1.18452) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 37.7333 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Oxford,
                MS Lafayette Co. United States | Chucky Mullins Dr. / Hill Dr. / Hathorn Rd. (34.35904, -89.54402) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 37.4657 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2017 | ICD estimated from Google Maps linework. | 
| Oxford,
                MS Lafayette Co. United States | Hathorn Rd. / Insight Park Ave. / (parking lot) (34.35880, -89.54768) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 34.5080 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2010-2012). ICD estimated from Google Maps linework. | 
| Oxford,
                MS Lafayette Co. United States | Anderson Rd. / W Oxford Loop (34.36827, -89.57188) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 32.5324 | Other (At-Grade) Unknown | 2019 | ICD estimated from Google Maps linework. | 
| Oxford,
                MS Lafayette Co. United States | Old Taylor Rd. / University of Miss. Access Rd. (34.35899, -89.53144) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.5641 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Oxford,
                MS Lafayette Co. United States | Lamar St. / US 278 EB Ramps (34.35343, -89.52121) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 33.5242 | Other (At-Grade) Single-Lane | 2007 | Built June-July 2007. ICD estimated from Google Maps linework. | 
| Oxford,
                MS Lafayette Co. United States | Lamar St. / US 278 WB Ramps (34.35479, -89.52112) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.4676 | Other (At-Grade) Single-Lane | 2007 | Built June-July 2007. ICD estimated from Google Maps linework. | 
| Oxford,
                NC Granville Co. United States | Main St. / Spring St. (36.31001, -78.58728) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.6032 | Other (At-Grade) Single-Lane | 2021 | https://www.cbs17.com/traffic/oxford-roundabout-project-to-close-intersection-for-8-weeks/ | 
| Oxford,
                MS Lafayette Co. United States | SR 30 / SR 7 SB Ramps (34.38488, -89.49810) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | 2022 | Raindrop shaped. Series of three roundabouts. | 
| Oxford,
                MS Lafayette Co. United States | SR 30 / Park Dr. (34.38524, -89.49947) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Series of three roundabouts. | 
| Oxford,
                MS Lafayette Co. United States | SR 30 / Ferndale Blvd. (34.38595, -89.50223) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Series of three roundabouts. | 
| Oxford,
                OH Butler Co. United States | US 127 / SR 73 (39.51120, -84.60918) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | ODOT maintains | 
| Oxenford,
                Queensland Gold Coast Australia | Binstead Way / Kopps Rd. / Universal St. / Pitcairn Way (-27.92540, 153.30452) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Oxenford,
                Queensland Gold Coast Australia | Tamborine Oxenford Rd. / Leo Graham Way / Regatta Ave. (-27.89011, 153.30942) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Oxenford,
                Queensland Gold Coast Australia | Old Pacific Hwy. / Leo Graham Way (-27.89039, 153.31347) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Oxelösund,
                Sodermanland County Oxelösund Sweden | Rte 53 / Oxelösundsvägen (58.66981, 17.10683) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 27.3246 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Owings Mills,
                MD Baltimore Co. United States | Tollgate Rd. / Lastgage Rd. (39.42149, -76.78482) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.6010 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Owings Mills,
                MD Baltimore Co. United States | Ballard Green Dr. / Wilson Shannon Dr. / Julia Ln. (39.39162, -76.80439) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2017-2018). | 
| Owings Mills,
                MD Baltimore Co. United States | Worthington Rd. / Hunters Glen (39.46145, -76.74231) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Owings Mills,
                MD Baltimore Co. United States | Foxcreek Ct. (39.46537, -76.75334) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Unknown | ||
| Owings Mills,
                MD Baltimore Co. United States | Grand Central Ave. / (parking) (39.40581, -76.78033) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | Year Completed estimated (2011-2014). | 
| Owings Mills,
                MD Baltimore Co. United States | Grand Central Ave. / Waverly Ln. (39.40713, -76.78413) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2014 | Year Completed estimated (2011-2014). West leg added 2015. | 
| Owings Mills,
                MD Baltimore Co. United States | Upper Mill Dr. / Bluestem Ct. /Spring Willow Ct. / Bayline Cir. (39.41253, -76.82032) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Owings Mills,
                MD Baltimore Co. United States | Painters Mill Rd. / Lyons Mill Rd. (39.39425, -76.78747) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Owings Mills,
                MD Baltimore Co. United States | New Town Blvd. / Rangeford Dr. (39.40957, -76.80654) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Owings Mills,
                MD Baltimore Co. United States | (unknown) (39.39269, -76.78657) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Owings,
                MD Calvert Co. United States | Cross Point Dr. / Paulyn Dr. (38.71532, -76.61335) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Owings,
                MD Calvert Co. United States | Cross Point Dr. / Blue Sky Ct. / Bear Claw Ct. (38.71468, -76.61554) | Other Existing | Unknown Unknown | 3 Approaches 4 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Owings,
                MD Calvert Co. United States | Good Shepherd Way / Megatha Ln. (38.71846, -76.62480) | Other Existing | Uncontrolled Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Owensboro,
                KY Daviess Co. United States | KY 56 / KY 81 (37.75357, -87.17403) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.6605 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Owen Sound,
                ON Bruce Canada | ON-21 / Grey-Bruce Line / Bruce Rd 10 (44.54108, -81.12621) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 34.9015 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Owatonna,
                MN Steele Co. United States | CSAH 7 / TH 14 EB Ramps (44.05747, -93.27671) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 46.3480 | Freeway Ramps (Grade-Separated) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Owatonna,
                MN Steele Co. United States | CSAH 7 / TH 14 WB Ramps (44.05998, -93.27671) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1964 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2012 | ICD estimated from Google Maps linework. | 
| Owatonna,
                MN Steele Co. United States | 26th St. NE (CR 34) / N Cedar Ave. (CR 1) (44.10977, -93.22666) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2019 | |
| Owatonna,
                MN Steele Co. United States | E Rose St. / N Grove Ave. (44.08791, -93.22101) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 21.3360 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2020 | Year Completed estimated (2019-2020). | 
| Owatonna,
                MN Steele Co. United States | NW 26th St. / State Ave. / I-35 Frontage Rd. (44.10975, -93.24227) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2021 | Elliptical shape. ICD = 160 ft x 150 ft. https://content.govdelivery.com/accounts/MNSTEELE/bulletins/2f579d5 | 
| Owatonna,
                MN Steele Co. United States | SE 18th St. / Bixby Rd. (44.06634, -93.19513) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | https://www.southernminn.com/owatonna_peoples_press/news/continually-delayed-bixby-roundabout-finally-opens/article_c3d04d46-8eef-11ee-9f5e-77403423ef25.html | 
| Owatonna,
                MN Steele Co. United States | 24th Ave. SW / W Bridge St. (44.08433, -93.25657) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2021 | |
| Oviedo,
                FL Seminole Co. United States | Live Oak Reserve Blvd. / Dark Oak Ct. / Regal Pine Trl. (28.63374, -81.14937) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | Pedestrian access to central island. | |
| Oviedo,
                FL Seminole Co. United States | Franklin St. / Geneva Dr. / Division St. (28.67359, -81.20439) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 34.5795 | Other (At-Grade) Single-Lane | 2006 | Website: http://www.cityofoviedo.net/files/Roundabouts.pdf ICD estimated from Google Maps linework. | 
| Oviedo,
                FL Seminole Co. United States | Oviedo Blvd. / (future road) (28.66112, -81.20119) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.9196 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Overveen,
                North Holland Gemeente Bloemendaal Netherlands | N200 (Militairenweg / Julianalaan) / Bloemendaalseweg (52.39211, 4.60959) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Overveen,
                North Holland Gemeente Bloemendaal Netherlands | Bloemendaalseweg / Zijlweg / Korte Zijlweg (52.38844, 4.60767) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways | Other (At-Grade) Single-lane w/ Traversable Central Island | Bicycle roundabout. https://fietsberaad.nl/getmedia/298a4e77-8f30-44a1-821b-e0fc2e5853c8/2024_Fietsberaadnotitie-Inrichtingsaanbevelingen-voor-fietsrotondes_v1-0.pdf.aspx?ext=.pdf | |
| Overland Park,
                KS Johnson Co. United States | 167th St. / Switzer Rd. (38.82554, -94.70508) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Single-Lane | 2022 | Overland Park City Project TH-1836. | 
| Overland Park,
                KS Johnson Co. United States | W 76th St. / Marty St. (38.99144, -94.67002) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.1541 | Other (At-Grade) Single-Lane | 2002 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. | 
| Overland Park,
                KS Johnson Co. United States | W 78th St. / Marty St. (38.98766, -94.67005) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2002 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. | 
| Overland Park,
                KS Johnson Co. United States | W 77th St. / Santa Fe Dr. (38.98947, -94.67123) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2002 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. | 
| Overland Park,
                KS Johnson Co. United States | W 76th St. / Foster St. (38.99142, -94.67239) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2002 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. | 
| Overland Park,
                KS Johnson Co. United States | W 78th St. / Foster St. (38.98765, -94.67240) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2002 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. | 
| Overland Park,
                KS Johnson Co. United States | W 76th St. / Newton St. (38.99142, -94.67472) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.7637 | Other (At-Grade) Single-Lane | 2003 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. Year Completed estimated (2001-2003). | 
| Overland Park,
                KS Johnson Co. United States | W 78th St. / Newton St. (38.98766, -94.67470) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2005 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. Year Completed is approximate. | 
| Overland Park,
                KS Johnson Co. United States | W 77th St. / Robinson St. (38.98947, -94.67590) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2005 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming circles constructed. Year Completed estimated (2004-2005). | 
| Overland Park,
                KS Johnson Co. United States | W 80th St. / Newton St. (38.98399, -94.67472) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.1541 | Other (At-Grade) Single-Lane | 2009 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming measures constructed on 80th Street. Year Completed estimated (2008-2010). | 
| Overland Park,
                KS Johnson Co. United States | W 80th St. / Hemlock St. (38.98399, -94.68171) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.1541 | Other (At-Grade) Single-Lane | 2009 | This was part of a larger neighborhood street reconstruction project with a number of traffic calming measures constructed on 80th Street. Year Completed estimated (2008-2010). | 
| Overland Park,
                KS Johnson Co. United States | W 80th St. / Grandview St. (38.98399, -94.69105) | Traffic Calming Circle Existing | All-Way Yield None | 3 Approaches 0 Driveways 16.4589 | Other (At-Grade) Single-Lane | 2007 | This was part of a larger neighborhood street reconstruction project on 80th Street. Year Completed estimated (2006-2007). | 
| Overland Park,
                KS Johnson Co. United States | Oakmont St. / W 154th Terrace (38.84835, -94.72889) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.1541 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2020 | Developer built as part of an approved plan south of this location that required traffic calming measures. | 
| Overland Park,
                KS Johnson Co. United States | Travis Ln. / Travis St. / W 86th St. (38.97299, -94.66643) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4317 | Other (At-Grade) Single-Lane | 2010 | Prior to adding YIELD signs and striping, intersection only had one YIELD sign with a island in the middle. | 
| Overland Park,
                KS Johnson Co. United States | Lowell Ave. / 162nd St. (38.83538, -94.68283) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2016-2017). East leg added 2018-2020. | 
| Overland Park,
                KS Johnson Co. United States | Lowell Ave. / 165th St. (38.83088, -94.68238) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2012-2013). | 
| Overland Park,
                KS Johnson Co. United States | Lowell Ave. / (unknown) (38.82932, -94.68023) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2012-2013). | 
| Overland Park,
                KS Johnson Co. United States | W 132nd St. / W 133rd St. / N Hemlock St. (38.88772, -94.68264) | Roundabout Unknown | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2021 | |
| Overland Park,
                KS Johnson Co. United States | W 132nd St. / Foster St. (38.89080, -94.67341) | Unknown Unknown | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2021 | |
| Overland Park,
                KS Johnson Co. United States | Quivira Rd. / W 167th St. (38.82330, -94.72383) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Single-Lane | 2021 | |
| Overland Park,
                KS Johnson Co. United States | Quivira Rd. / W 165th St. (38.82876, -94.72385) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2021 | |
| Overland Park,
                KS Johnson Co. United States | Switzer Rd. / W 113th St. (38.92484, -94.70984) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 44.5993 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | Switzer Rd. / Indian Creek Pkwy. (38.92197, -94.70546) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.1676 | Other (At-Grade) Single-Lane | 2015 | Design completed in 2014 ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | 110th St. / Lamar Ave. (38.92910, -94.65830) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.3130 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | Concrete paving. Adjacent to convention center. ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | 133rd St. / Lamar Ave. (38.88654, -94.65847) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.1862 | Other (At-Grade) Single-Lane | 2006 | Completed May 2006. ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | W 161st Terr. / W 163rd St. / Flint St. (38.83472, -94.71741) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.3526 | Other (At-Grade) Single-Lane | 2007 | Built for new development. ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | Santa Fe Dr. / Conser St. (38.98233, -94.67347) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.2076 | Other (At-Grade) Single-Lane | 2004 | Completed September 2004. ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | W. 141st St. / Bluejacket St. (38.87130, -94.71130) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.6150 | Other (At-Grade) Single-Lane | 2001 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | 157th St. / King St. (38.84201, -94.71545) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 40.9304 | Other (At-Grade) Single-Lane | 2007 | Built for new development. ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | Indian Creek Pkwy. / W 105th St. (38.93511, -94.63311) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 40.8768 | Other (At-Grade) Single-Lane | 2009 | Year Completed estimated (2008-2010). ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | Carson St. / Payton Dr. / Kobe Dr. (38.88090, -94.66183) | Other Existing | Uncontrolled None | 4 Approaches 0 Driveways 26.9621 | Other (At-Grade) Single-Lane | 2012 | No yield signs or other control but otherwise typical roundabout geometry. ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | W 159th St. / S Pflumm Rd. (38.84016, -94.74243) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://twitter.com/opcares/status/1293961531567333377?lang=en | 
| Overland Park,
                KS Johnson Co. United States | Metcalf Ave. / W 167th St. (38.82551, -94.66777) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | 2019 | Year Completed estimated (2018-2020). | 
| Overland Park,
                KS Johnson Co. United States | W 159th St. / Blue Valley High School west entrance (38.84002, -94.65839) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 3 Approaches 0 Driveways 42.6717 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | |
| Overland Park,
                KS Johnson Co. United States | W 159th St. / Blue Valley High School east entrance (38.84003, -94.65406) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 3 Approaches 0 Driveways 42.6717 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | |
| Overland Park,
                KS Johnson Co. United States | W 159th St. / Mission Rd. (38.84021, -94.63052) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2017 | Right-turn-only lane on west leg. | 
| Overland Park,
                KS Johnson Co. United States | W 175th St. / Quivira Rd. (38.81095, -94.72371) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://www.youtube.com/watch?v=jJkc5k7l-kg | 
| Overland Park,
                KS Johnson Co. United States | Lamar Ave. / W 137th St. / W 138th St. (38.88011, -94.65830) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://twitter.com/opcares/status/1307342447027122177 | 
| Ovar,
                Aveiro Ovar Portugal | N109 (Rua da Pardala - Rua Ponte Reada) / N327 (Avenida Dom Manuel I) (40.87979, -8.61762) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Outwood West,
                England Wakefield United Kingdom | Newton Hill Roundabout [A65 (Leeds Rd.) / Leeds Rd. / Bar Ln.] (53.69456, -1.50407) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Outwood East,
                England Wakefield United Kingdom | Bar Ln. / Trent Bridge Way / Wolfenden Way (53.69590, -1.49798) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Ourimbah,
                New South Wales Central Coast Australia | Pacific Hwy. / M1 (Pacific Motorway) NB Ramps (-33.34426, 151.36840) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | ||
| Ourimbah,
                New South Wales Central Coast Australia | Pacific Hwy. / M1 (Pacific Motorway) SB Ramps (-33.34538, 151.36985) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | ||
| Oulu,
                North Ostrobothnia Oulu Finland | Valtatie 847 (Haukiputaantie) / Kiviniementie (65.12864, 25.35956) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Oulu,
                North Ostrobothnia Oulu Finland | Rautatienkatu / Alasintie (64.99881, 25.46636) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Oulu,
                North Ostrobothnia Oulu Finland | Valtatie 847 (Haukiputaantie) / Rannantie / Jokelantie (65.17630, 25.35318) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Oulu,
                North Ostrobothnia Oulu Finland | Rannantie / Revontie / Kirkkotie (65.17648, 25.35180) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Ottumwa,
                IA Wapello Co. United States | Albia Rd. / Quincy Ave. (41.00957, -92.43837) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2024 | https://ottumwapost.com/quincy-avenue-albia-road-detour-route-p10174-236.htm | 
| Ottumwa,
                IA Wapello Co. United States | Wapello St. / Albia Rd. / N Ferry St. (41.00821, -92.43239) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.9516 | Other (At-Grade) Unknown | 2019 | https://www.facebook.com/cityofottumwa/posts/10157576935583243?comment_id=10157577136173243&comment_tracking=%7B"tn"%3A"R"%7D ICD estimated from Google Maps linework. | 
| Ottumwa,
                IA Wapello Co. United States | N Ferry St. / Richmond Ave. (41.00736, -92.43270) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.8280 | Other (At-Grade) Unknown | 2018 | Opened summer 2018. https://www.google.com/maps/d/viewer?mid=12miH60MU576dGTib4lVgSXtLX2U&hl=en&gl=us&ie=UTF8&oe=UTF8&msa=0&ll=41.0083054%2C-92.43248460000001&z=17 ICD estimated from Google Maps linework. | 
| Ottumwa,
                IA Wapello Co. United States | US 34 / US 63 (41.00102, -92.40453) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.3638 | Other (At-Grade) Single-Lane | 2006 | Opened November 2006. Right turn bypass lanes on all approaches. ICD estimated from Google Maps linework. | 
| Ottoway,
                South Australia Port Adelaide Enfield Australia | May Terrace / Agnes St. (-34.84482, 138.53574) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Ottoway,
                South Australia Port Adelaide Enfield Australia | May Terrace / Milburn St. (-34.84391, 138.53727) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Ottoway,
                South Australia Port Adelaide Enfield Australia | May Terrace / Cleveland Terrace (-34.84739, 138.53147) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Ottershaw,
                England Surrey United Kingdom | Guildford Rd. / St Peters Way (51.37235, -0.52583) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways | Other (At-Grade) Multilane (3+ Lane) | ||
| Ottawa Lake,
                MI Monroe Co. United States | St Anthony Rd. / US 23 NB Ramps (41.79823, -83.68614) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.1762 | Freeway Ramps (Grade-Separated) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| Ottawa Lake,
                MI Monroe Co. United States | St Anthony Rd. / US 23 SB Ramps (41.79802, -83.69021) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 35.6148 | Freeway Ramps (Grade-Separated) Single-Lane | 2013 | Right-turn bypass lane on west leg. ICD estimated from Google Maps linework. |