| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Lacey,
                WA Thurston Co. United States | Vashon Dr. NE / Columbia Way NE (47.09724, -122.77000) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 26.0175 | Other (At-Grade) Single-Lane | 2005 | Opened December 2005. ICD estimated from Google Maps linework. | 
| Lacey,
                WA Thurston Co. United States | Britton Pkwy. NE / Gateway Blvd. (47.06858, -122.78590) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 42.3012 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened September 2007. ICD estimated from Google Maps linework. | 
| Fruitland,
                MD Wicomico Co. United States | MD 513 Cedar Ln. / Division St. (38.32094, -75.61021) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.0471 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Saint Leonard,
                MD Calvert Co. United States | Calvert Beach Rd. / MD 765 Saint Leonard Rd. (38.47316, -76.50607) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.2460 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Annapolis Junction,
                MD Anne Arundel Co. United States | Guilford Rd. / MD 32 WB Ramps (39.12294, -76.78472) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.4293 | Freeway Ramps (Grade-Separated) Single-Lane | 2002 | Bypass lanes on all legs. ICD estimated from Google Maps linework. | 
| Hampstead,
                MD Carroll Co. United States | MD 88 / MD 833 (39.60434, -76.83682) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 34.0470 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Chaptico,
                MD St. Marys Co. United States | MD 234 / MD 238 (38.36791, -76.78179) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 35.5833 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Clarksville,
                MD Howard Co. United States | Brighton Dam Rd. / Ten Oaks Rd. (39.20491, -76.95455) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 35.1680 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Deale,
                MD Anne Arundel Co. United States | MD 256 / MD 258 (38.79327, -76.54586) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 34.4423 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Bel Air,
                MD Harford Co. United States | Constant Friendship Blvd. / BJ's (39.45546, -76.31870) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 29.5092 | Other (At-Grade) Single-Lane | 1995 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Hughesville,
                MD Charles Co. United States | MD 231 / MD 5 NB Ramps (38.53426, -76.77790) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 54.1863 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2005 | ICD estimated from Google Maps linework. | 
| Hughesville,
                MD Charles Co. United States | MD 231 / MD 5 SB Ramps (38.53381, -76.77969) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 58.8579 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2005 | ICD estimated from Google Maps linework. | 
| Odenton,
                MD Anne Arundel Co. United States | MD 175 / MD 677 / Higgins Dr. (39.07831, -76.68481) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 57.9120 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2004 | Reduced from two lanes to one lane in 2010. 21442 | 
| Loveland,
                CO Larimer Co. United States | Monte Vista Dr. East / W. 22nd St. (40.41451, -105.13180) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 24.5519 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Monte Vista Dr. West / W. 22nd St. (40.41449, -105.13290) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 26.3706 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | New Castle Dr. / Tabernash Dr. (40.42599, -105.12010) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 24.5477 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Scenic Dr. / Foothills Dr. (40.39674, -105.13522) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 1998 | Painted splitter islands; unmarked pedestrian crossings along circulatory roadway. | 
| Seattle,
                WA King Co. United States | Bagley Ave. N / N 43rd St. (47.65912, -122.33260) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Loveland,
                CO Larimer Co. United States | Sculptor Dr. / Corvus Dr. (40.39647, -105.03130) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 37.2926 | Other (At-Grade) Single-Lane | 2003 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Tacanecy Dr. / Marcy Dr. (40.39230, -105.12140) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.1082 | Other (At-Grade) Single-Lane | 1995 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Tiger Ave. / Angora Dr. (40.37680, -105.12750) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 28.2050 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Valley Oak Dr. / Clearwater Dr. (40.44328, -105.02180) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 34.5398 | Other (At-Grade) Single-Lane | 2000 | Date estimated. Functional Class: Local ICD estimated from Google Maps linework. | 
| Parker,
                CO Douglas Co. United States | Main St. / (unknown) (39.51799, -104.75580) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 19.3480 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Independent Ave. / Sams Club entrance (39.08170, -108.58310) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 33.3754 | Other (At-Grade) Single-Lane | 2003 | Serves commercial development parking lot. ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Colorado Ave. / S. 2nd St. (39.06636, -108.56950) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 25.9643 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | G Rd. / 25th Rd. (39.10636, -108.58940) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 30.5834 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | G Rd. / 24 1 / 2 Rd. (39.10635, -108.59870) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 34.2905 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | Meridian Ave. N / N 43rd St. (47.65914, -122.33380) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Colorado Springs,
                CO El Paso Co. United States | University of Colorado - Colorado Springs (38.89215, -104.80190) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 36.2537 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | Meridian Ave. N / N 42nd St. (47.65797, -122.33380) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Loveland,
                CO Larimer Co. United States | Crestone Dr. / Foothills Dr. (40.39717, -105.13149) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 1997 | Painted splitter islands; unmarked pedestrian crossings along circulatory roadway. | 
| Greeley,
                CO Weld Co. United States | W. 29th St. / 67th Ave. (40.38995, -104.78710) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 48.2121 | Other (At-Grade) Single-Lane | 2003 | ICD estimated from Google Maps linework. | 
| Erie,
                CO Weld Co. United States | CW Bixler Blvd. / Washburn St. (40.06230, -105.05650) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 20.1096 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Erie,
                CO Weld Co. United States | Lehigh Cir. / Bonanza Dr. (40.03702, -105.04080) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 29.2612 | Other (At-Grade) Single-Lane | 2006 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Erie,
                CO Weld Co. United States | Vista Pkwy. / Mountain View Blvd. (40.00784, -105.03110) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 27.4441 | Other (At-Grade) Single-Lane | 2006 | Northbound right turn bypass lane. Functional Class: Local ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | Burke Ave. N / N 43rd St. (47.65915, -122.33500) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Burke Ave. N / N 44th St. (47.66031, -122.33500) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 16.8926 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | Meridian Ave. N / N 44th St. (47.66030, -122.33370) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 20.9147 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Broomfield,
                CO Adams Co. United States | Zang St. / (parking lot #1) (39.92782, -105.13320) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 36.6350 | Other (At-Grade) Single-Lane | 2001 | Serves commercial development. ICD estimated from Google Maps linework. | 
| Broomfield,
                CO Adams Co. United States | Zang St. / (parking lot #2) (39.92641, -105.13170) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 35.7199 | Other (At-Grade) Single-Lane | 2001 | Serves commercial development. ICD estimated from Google Maps linework. | 
| Englewood,
                CO Arapahoe Co. United States | Englewood Pkwy. / S. Cherokee St. (39.65491, -104.99110) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 41.3782 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2000 | ICD estimated from Google Maps linework. | 
| Englewood,
                CO Arapahoe Co. United States | W. Sheri Ln. / Belleview Park (39.62281, -105.00620) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 42.3174 | Other (At-Grade) Single-Lane | 2001 | ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | Bagley Ave. N / N 44th St. (47.66029, -122.33260) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Applewood,
                CO Jefferson Co. United States | W. 32nd Ave. / Eldridge St. (39.76180, -105.15660) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.3790 | Other (At-Grade) Single-Lane | 2005 | North leg serves golf course parking lot. ICD estimated from Google Maps linework. | 
| Evergreen,
                CO Jefferson Co. United States | CR 65 / Bergen Pkwy. (39.69101, -105.36050) | Roundabout Existing | Unknown Unknown | 3 Approaches 1 Driveways 26.6520 | Other (At-Grade) Single-Lane | 1998 | ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | Corliss Ave. N / N 43rd St. (47.65912, -122.33140) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Corliss Ave. N / N 42nd St. (47.65795, -122.33140) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 13.6756 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | Sunnyside Ave. N / N 42nd St. (47.65794, -122.33020) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 16.8934 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | 2nd Ave. NE / NE 43rd St. (47.65896, -122.32730) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 70.7899 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Littleton,
                CO Arapahoe Co. United States | W. Caley Ave. / S. Spotswood St. (39.60239, -105.01160) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 23.9256 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | 2nd Ave. NE / NE 44th St. (47.66022, -122.32730) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 33.7853 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Superior,
                CO Boulder Co. United States | Rock Creek Pkwy. / 88th St. (39.93764, -105.14780) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 47.6187 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2004 | ICD estimated from Google Maps linework. | 
| Durango,
                CO La Plata Co. United States | Jenkins Ranch Rd. / Molas Dr. (37.28099, -107.85550) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 28.5089 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Scenic Dr. / Lookout Dr. (40.39773, -105.13528) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-Lane | 1998 | Painted splitter islands; unmarked pedestrian crossings along circulatory roadway. | 
| Loveland,
                CO Larimer Co. United States | E. 13th St. / (unknown) / (parking lot) (40.40565, -105.03960) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 132.7798 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Sculptor Dr. / (unknown) / (parking lot) (40.40465, -105.03520) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 59.1152 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Parker,
                CO Douglas Co. United States | E. Neu Towne Pkwy. / S. Cedar Gulch Ln. (39.51147, -104.79250) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 35.0140 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Parker,
                CO Douglas Co. United States | S. Cedar Gulch Ln. / (unknown) (39.51289, -104.79120) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 35.9347 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Parker,
                CO Douglas Co. United States | E. Neu Towne Pkwy. / (unknown) (39.51047, -104.78530) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 34.0931 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Commerce City,
                CO Adams Co. United States | Turnberry Pkwy. / Revere St. (39.89062, -104.83800) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2005 | Year Completed estimated (2004-2005). | 
| Commerce City,
                CO Adams Co. United States | E 105th Ave. / Uvalda St. (39.88673, -104.83520) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2003 | Year Completed estimated (2002-2003). | 
| Commerce City,
                CO Adams Co. United States | Wheeling St. / E 106th Ave. / Victor St. (39.88895, -104.83121) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2003 | Painted splitter islands. | 
| Middletown,
                DE New Castle Co. United States | Bunker Hill Rd. / Choptank Rd. (39.45790, -75.74350) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 31.3525 | Other (At-Grade) Single-Lane | 2007 | Rural, redesigned in 2008 to better accommodate trucks and farm equipment. ICD estimated from Google Maps linework. | 
| Quakertown,
                PA Bucks Co. United States | Station Rd. / Old Bethlehem Pike (40.42421, -75.33921) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 30.0036 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Rocky Mountain Ave. / Medical Center of the Rockies South (40.41537, -105.00150) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 40.0100 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Rocky Mountain Ave. / Medical Center of the Rockies North (40.41752, -105.00030) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 47.2831 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Rocky Mountain Ave. / Kendall Pkwy. / Artisan Dr. (40.42604, -105.00249) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 51.8230 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | ICD estimated from Google Maps linework. | 
| Anchorage,
                AK Anchorage United States | Elmore Rd. / E 135th Ave. / South Anchorage High School (61.09869, -149.80410) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.3650 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Woodland,
                CA Yolo Co. United States | Promenade Dr. / Somerset Cir. (38.64501, -121.73150) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.7154 | Other (At-Grade) Single-Lane | 2007 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Woodland,
                CA Yolo Co. United States | Campos Ave. / Mack Way / Shoemaker Ct. (38.64920, -121.73140) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.1843 | Other (At-Grade) Single-Lane | 2007 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Woodland,
                CA Yolo Co. United States | Campos Ave. / Ortiz Ave. (38.65290, -121.73120) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.7792 | Other (At-Grade) Single-Lane | 2007 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Knoxville,
                TN Knox Co. United States | Concord Rd. / Northshore Dr. (35.86081, -84.14137) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.9098 | Other (At-Grade) Single-Lane | 2008 | http://www.knoxnews.com/news/2008/feb/20/countys-first-roundabout-opened-concord-northshore/ ICD estimated from Google Maps linework. | 
| Palo Alto,
                CA Santa Clara Co. United States | Addison Ave. / Bryant St. (37.44197, -122.15540) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 15.1722 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Palo Alto,
                CA Santa Clara Co. United States | Lytton Ave. / Fulton St. (37.45214, -122.15750) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 9.4813 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Palo Alto,
                CA Santa Clara Co. United States | Park Blvd. / Park Ave. (37.43076, -122.14980) | Traffic Calming Circle Existing | Unknown Unknown | 3 Approaches 0 Driveways 24.6585 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Cupertino,
                CA Santa Clara Co. United States | Portal Ave. / Wheaton Dr. (37.32445, -122.01964) | Traffic Calming Circle Existing | All-Way Stop None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2001 | Year Completed estimated (2000-2002). | 
| Springfield,
                IL Sangamon Co. United States | Capitol Ave. / 12th St. (39.79816, -89.63947) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2012 | |
| Hayward,
                CA Alameda Co. United States | Orchard Ave. / Joyce St. (37.65808, -122.07850) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 18.9103 | Other (At-Grade) Single-Lane | 2000 | Painted splitter islands. Built as temporary in February 2000, reconstructed permanent central island 2001 (http://ci.hayward.ca.us/citygov/meetings/cca/rp/2000/rp091900-05.pdf). ICD estimated from Google Maps linework. | 
| El Cajon,
                CA San Diego Co. United States | Murray Ave. / W. Main St. / Blackthorne Ave. / S. Westwind Dr. (32.79107, -116.98510) | Other Existing | Unknown Unknown | 5 Approaches 0 Driveways 32.1284 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Escalon,
                CA San Joaquin Co. United States | 1st Ave. / Riesling Way (37.79437, -121.01140) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 18.8755 | Other (At-Grade) Single-Lane | 2000 | Painted splitter islands. ICD estimated from Google Maps linework. | 
| Santa Maria,
                CA Santa Barbara Co. United States | S. College Dr. / Southside Pkwy. (34.92111, -120.42530) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.0676 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2001 | No circulatory roadway striping. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Santa Maria,
                CA Santa Barbara Co. United States | S. College Dr. / E. McCoy Ln. (34.91648, -120.42510) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8427 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2001 | No circulatory roadway striping. Fatal crash October 15, 2009. 11861-05. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Santa Maria,
                CA Santa Barbara Co. United States | S. Bradley Rd. / Southside Pkwy. (34.92075, -120.42200) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.0056 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2001 | No circulatory roadway striping. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Santa Maria,
                CA Santa Barbara Co. United States | S. Bradley Rd. / E. McCoy Ln. (34.91219, -120.42160) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 52.8868 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | No circulatory roadway striping. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Avonport,
                NS Kings Canada | Trunk 1 / Hwy 101 WB Ramps / Oak Island Rd. (45.10019, -64.25748) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Freeway Ramps (Grade-Separated) Single-Lane | 2006 | |
| Armdale,
                NS Halifax Regional Municipality Canada | Chebucto Rd. / Quinpool Rd. / Herring Cove Rd. / St. Margaret's Bay Rd. / Joseph Howe Dr. (44.64159, -63.62042) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 70.5321 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2005 | Old rotary that was converted to roundabout rules of road in 2005. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Regional Municipality Canada | Ira Needles Blvd. / Erb St. (43.44632, -80.57117) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 49.4250 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2004 | Fishhook pavement markings. Series of five roundabouts. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Woolwich,
                ON Waterloo Regional Municipality Canada | Arthur St. / Sawmill Rd. (43.54355, -80.54693) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 60.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | |
| Kitchener,
                ON Waterloo Regional Municipality Canada | Ira Needles Blvd. / Highland Rd. (43.42294, -80.55246) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 83.2743 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Fishhook pavement markings. Series of five roundabouts. ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Regional Municipality Canada | Ira Needles Blvd. / Highview Dr. (43.41460, -80.55273) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 45.1131 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Fishhook pavement markings. Series of five roundabouts. ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Regional Municipality Canada | Fountain St. / Blair Rd. (43.38601, -80.38981) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2005 | |
| Cambridge,
                ON Waterloo Regional Municipality Canada | Can-Amera Pkwy. / Conestoga Blvd. (43.39012, -80.31281) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2005 | |
| Kitchener,
                ON Waterloo Regional Municipality Canada | Ira Needles Blvd. / Victoria St. S. (43.42872, -80.55302) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 46.8373 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Fishhook pavement markings. Series of five roundabouts. ICD estimated from Google Maps linework. | 
| Kitchener/Waterloo,
                ON Waterloo Regional Municipality Canada | Ira Needles Blvd. / University Ave. (43.43700, -80.55984) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 53.7688 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Fishhook pavement markings. Series of five roundabouts. ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Regional Municipality Canada | Fischer-Hallman Rd. / Huron Rd. (43.38225, -80.48878) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 50.0000 | Other (At-Grade) Single-Lane | 2007 | |
| Kitchener,
                ON Waterloo Regional Municipality Canada | Fischer-Hallman Rd. / Seabrook Dr. (43.38706, -80.49034) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.0946 | Other (At-Grade) Single-Lane | 2007 | Sized as double-lane but striped as single-lane with yellow spiral hatching next to truck apron. ICD estimated from Google Maps linework. | 
| Conway,
                AR Faulkner Co. United States | Courtway Dr. / Siebenmorgan Rd. (35.09868, -92.41469) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.0634 | Other (At-Grade) Single-Lane | 2007 | Schools located within one block on three of four approaches Functional Class: Collector ICD estimated from Google Maps linework. | 
| Conway,
                AR Faulkner Co. United States | Prince St. / Western Ave. (35.09203, -92.45590) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.7935 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Located at Entrance to High School Complex Previously controlled by two way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Conway,
                AR Faulkner Co. United States | Bruce St. / Farris Rd. (35.08129, -92.46307) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 40.0719 | Other (At-Grade) Single-Lane | 2008 | Adjacent to University of Central Arkansas Campus and Sports Venues. Functional Class: Arterial 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. |