| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Swampscott,
                MA Essex Co. United States | Monument Ave / Elmwood Rd (42.46952, -70.91737) | Traffic Calming Circle Existing | All-Way Stop None | 4 Approaches 0 Driveways 35.2392 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Lynn,
                MA Essex Co. United States | Western Ave (Rte 107) / Federal St / South St / Market Square (42.46260, -70.96575) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 54.6268 | Other (At-Grade) Single-Lane | 2017 | ICD estimated from Google Maps linework. | 
| East Boston,
                MA Suffolk Co. United States | Saratoga St / Boardman St / Ford St (42.38701, -71.00805) | Traffic Calming Circle Existing | Other None | 4 Approaches 0 Driveways 25.5821 | Other (At-Grade) Single-Lane | control type: Ford St and Boardman St all-way stop On-street parking on both sides. ICD estimated from Google Maps linework. | |
| Everett,
                MA Middlesex Co. United States | Revere Beach Pkwy. (Rte 16) / Mystic View Rd. / Santilli Hwy (42.40238, -71.06892) | Signalized Roundabout/Circle Existing | Signal None | 5 Approaches 0 Driveways 155.4480 | Other (At-Grade) Multilane (3+ Lane) | Revere Beach Pkwy extends through the rotary. ICD 560 ft x 460 ft. | |
| Malden,
                MA Middlesex Co. United States | Fellsway E / Highland Ave (42.43419, -71.08356) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 4 Approaches 0 Driveways 24.6814 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Medford,
                MA Middlesex Co. United States | Highland Ave. / Woodland Rd. / Elm St. (42.44247, -71.09392) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 53.3400 | Other (At-Grade) Single-Lane | 2015 | Added roundabout style pavement markings on approaches and definition of circulating roadway in approx. 2015. Right-turn-only lane and two-lane exit on north leg. | 
| Brighton,
                MA Suffolk Co. United States | Beacon St / Soldiers Field Parkway / Parsons St / US 20 (42.35821, -71.16022) | Rotary Existing | Other None | 5 Approaches 0 Driveways 147.3851 | Other (At-Grade) Multilane (3+ Lane) | Lane redesign in approx. 2013 Pavement markings redone in approx. 2010. Control Type: mix of Signal, stop and yield signs. All approaches have their own treatment. ICD estimated from Google Maps linework. | |
| Cambridge,
                MA Middlesex Co. United States | Memorial Dr (Rte 3) / Brookline St / BU Bridge (Rte 2) (42.35424, -71.11081) | Rotary Existing | Other None | 4 Approaches 0 Driveways 84.7297 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | Control Types: Signals on BU Bridge approach and exit, other approaches yield sign. ICD estimated from Google Maps linework. | |
| Allwood,
                NJ Passaic Co. United States | Allwood Rd. / Bloomfield Ave. (40.84302, -74.15957) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.0792 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2004 | Converted from non-circular rotary. ICD estimated from Google Maps linework. | 
| East Harwich,
                MA Barnstable Co. United States | Queen Anne Rd. / Orleans-Harwich Rd. (Rte 39) (41.70049, -70.03164) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.8855 | Other (At-Grade) Single-Lane | 2006 | no crosswalks, no sidewalks ICD estimated from Google Maps linework. | 
| Princeton,
                NJ Mercer Co. United States | Alexander St. / University Pl. (40.34305, -74.66085) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 30.0398 | Other (At-Grade) Single-Lane | 2014 | Bike sharrows and parking cutouts on one leg. ICD estimated from Google Maps linework. | 
| Somerville,
                MA Middlesex Co. United States | Powder House Square [Powder House Blvd. / Broadway / College Ave. / Werner St.] (42.40114, -71.11677) | Roundabout Existing | All-Way Yield None | 6 Approaches 0 Driveways 70.1040 | Other (At-Grade) Single-Lane | 2021 | Originally 2-lane traffic circle with signal control on all entries and central island originally accessible for pedestrians. Converted to a single-lane roundabout in 2021 using only signing, striping, and raised markers. As of March 2022, all signals (including pedestrian signals) have been covered. | 
| Winchester,
                MA Middlesex Co. United States | Main St / Mt Vernon St / Church St / Park St / Laraway Rd (42.45281, -71.13716) | Rotary Existing | Uncontrolled Pedestrian Signal (red-yellow-green to drivers) | 5 Approaches 0 Driveways 47.5856 | Other (At-Grade) Single-Lane | Improved ped crossings (markings) approx. 2001. Ped access to train station nearby. Bike racks. on-street parking on circular roadway. ICD estimated from Google Maps linework. | |
| Bel Air South,
                MD Harford Co. United States | S Tollgate Rd. / Plumtree Rd. (39.50070, -76.33349) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 31.3332 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Bel Air South,
                MD Harford Co. United States | S Tollgate Rd. / W Ring Factory Rd. (39.50873, -76.34550) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 28.5652 | Other (At-Grade) Single-Lane | 2006 | Year Completed estimated (2005-2007). ICD estimated from Google Maps linework. | 
| Bel Air South,
                MD Harford Co. United States | Abingdon Rd. / Dunbarton Dr. / Box Hill S Pkwy. (39.47491, -76.30092) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 25.8134 | Other (At-Grade) Single-Lane | 2006 | Year Completed estimated (2005-2007). ICD estimated from Google Maps linework. | 
| Bel Air North,
                MD Harford Co. United States | Moores Mill Rd. / Southampton Rd. (39.54847, -76.33536) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.6279 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Reno,
                NV Washoe Co. United States | SR 341 (Geiger Grade Rd.) / Veterans Pkwy. / (parking) (39.40271, -119.74165) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 62.4840 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | Double left (left, left-through-right) on south leg; double right (left-through-right, right) on west leg. | 
| Pueblo,
                CO Pueblo Co. United States | N Purcell Rd. / E Platteville Blvd. (38.35647, -104.69429) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 33.7158 | Other (At-Grade) Single-Lane | 2014 | ICD estimated from Google Maps linework. | 
| Franklin Lakes,
                NJ Bergen Co. United States | Franklin Lake Rd. / High Mountain Rd. (40.99348, -74.21235) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.2409 | Other (At-Grade) Single-Lane | 2014 | Upgraded from a neighborhood traffic circle in 2014 ICD estimated from Google Maps linework. | 
| Highlands,
                MA Bristol Co. United States | President Ave (US 6) / N Eastern Ave (US 6) / Rte 24 Ramps (41.71141, -71.12394) | Rotary Existing | All-Way Yield None | 3 Approaches 0 Driveways 134.6275 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Toronto,
                ON Toronto Canada | Port Union Rd. / Bridgend St. (43.77682, -79.13549) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 31.0447 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Markham,
                ON York Canada | Swan Lake Blvd. / Lakeside Vista Way. (43.89623, -79.25077) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 38.0000 | Other (At-Grade) Single-Lane | 2001 | Year Completed estimated (2000-2001). | 
| Wall Township,
                NJ Monmouth Co. United States | RT-34 S / Allaire Rd. (40.15011, -74.09599) | Rotary Existing | Other Unknown | 4 Approaches 0 Driveways 106.8086 | Other (At-Grade) Multilane (2 Lane, unspecified) | Built in the 1930s. Yield signs on Allaire Rd approaches; some kind of traffic lights on Rt 34 approaches. ICD estimated from Google Maps linework. | |
| Hasbrouck Heights,
                NJ Bergen Co. United States | Passaic Ave. / Boulevard (40.85798, -74.08175) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 54.1986 | Other (At-Grade) Single-Lane | Very narrow splitter islands. ICD estimated from Google Maps linework. | |
| Brookline,
                MA Norfolk Co. United States | Lee St / Warren St / Dudley St (42.32272, -71.13750) | Rotary Existing | Other None | 3 Approaches 0 Driveways 52.9826 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Boston,
                MA Suffolk Co. United States | William J Day Blvd / Broadway (42.33584, -71.02402) | Rotary Existing | Uncontrolled None | 3 Approaches 0 Driveways 19.4229 | Other (At-Grade) Multilane (2 Lane, unspecified) | No pavement markings on circular roadway. On street parking on circular roadway. ICD estimated from Google Maps linework. | |
| Forest Park,
                MO St. Louis City Co. United States | Hampton Ave. / Concourse Dr. / Wells Dr. (38.63316, -90.28546) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.7207 | Other (At-Grade) Single-Lane | 2009 | Right-turn bypass lane merge in crosswalk area. ICD estimated from Google Maps linework. | 
| Forest Park,
                MO St. Louis City Co. United States | Concourse Dr. / Washington Dr. (38.63495, -90.28480) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 23.3234 | Other (At-Grade) Single-Lane | 2009 | ICD estimated from Google Maps linework. | 
| Forest Park,
                MO St. Louis City Co. United States | Government Dr. / Wells Dr. (38.63437, -90.30113) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 44.7814 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Warrenton,
                VA Fauquier Co. United States | E Shirley Ave. / Falmouth St. (38.69843, -77.78795) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 13.0496 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2018 | Constructed Fall 2018, mini-roundabout with one bypass lane ICD estimated from Google Maps linework. | 
| Aloha,
                OR Washington Co. United States | SW 175th St. / SW Kemmer Rd. (45.45121, -122.85724) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 39.3785 | Other (At-Grade) Single-Lane | 2018 | ICD estimated from Google Maps linework. | 
| Bossier City,
                LA Bossier Par. United States | W 1st St. / Spears St. (32.52108, -93.73971) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 32.2256 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| Bossier City,
                LA Bossier Par. United States | W 1st St. / Margaritaville Way / Colquitt St. (32.52193, -93.73982) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.2112 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| South Yarmouth,
                MA Barnstable Co. United States | Wampanoag Rd. / Eldridge Rd. (41.64863, -70.21542) | Traffic Calming Circle Existing | Uncontrolled None | 4 Approaches 0 Driveways 39.2675 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Dennis,
                MA Barnstable Co. United States | Davis Beach Rd. / Lighthouse Rd. / Loring Ave. (41.65225, -70.17300) | Rotary Existing | Uncontrolled None | 4 Approaches 0 Driveways 40.1577 | Other (At-Grade) Single-Lane | Stop control on the Davis Beach driveway ICD estimated from Google Maps linework. | |
| Mashpee,
                MA Barnstable Co. United States | Rock Landing Rd. / Cross Rd. / Greensward Rd. (41.57286, -70.47406) | Traffic Calming Circle Existing | Other Unknown | 4 Approaches 0 Driveways 55.3965 | Other (At-Grade) Single-Lane | Private roads. Mixed Stop-controlled and free-merge. ICD estimated from Google Maps linework. | |
| Mashpee,
                MA Barnstable Co. United States | Triton Sound Circle / Troon Way / Greenwards Rd. / Shore Dr. West / Landmark Ave. (41.56210, -70.47509) | Traffic Calming Circle Existing | All-Way Stop Unknown | 5 Approaches 0 Driveways 57.1930 | Other (At-Grade) Single-Lane | On private roads ICD estimated from Google Maps linework. | |
| Hyannis,
                MA Barnstable Co. United States | Bearses Way / Basset Lane (41.65436, -70.29148) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.8786 | Other (At-Grade) Single-Lane | 2009 | crosswalks on all approaches ICD estimated from Google Maps linework. | 
| Braintree,
                MA Norfolk Co. United States | Union Street / Rte 3 (42.21028, -70.99659) | Rotary Existing | All-Way Yield None | 4 Approaches 0 Driveways 65.4619 | Freeway Ramps (Grade-Separated) Single-Lane | Braintree Rotary ICD estimated from Google Maps linework. | |
| Research,
                Victoria Australia | Main Rd. / Ingrams Rd. / Raglan Rd. (-37.70357, 145.18064) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 21.7335 | Other (At-Grade) Single-Lane | Steep grade on Main Rd. through roundabout. ICD estimated from Google Maps linework. | |
| Research,
                Victoria Australia | Main Rd. / Research-Warrandyte Rd. (-37.70365, 145.17914) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 25.5132 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| East Hants,
                NS Hants Canada | Hwy 14 E / County 224 / Hwy 102 EB ramps (45.05516, -63.44175) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 40.4978 | Freeway Ramps (Grade-Separated) Single-Lane | 2008 | Year Completed estimated (2005-2011). ICD estimated from Google Maps linework. | 
| East Hants,
                NS Hants Canada | Hwy 14 / Hwy 102 SB (45.05648, -63.44497) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.0000 | Freeway Ramps (Grade-Separated) Single-Lane | 2008 | Year Completed estimated (2005-2011). | 
| McMinnville,
                OR Yamhill Co. United States | NW Hill Rd. / NW Baker Creek Rd. (45.22708, -123.22767) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.4877 | Other (At-Grade) Single-Lane | 2018 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Ira Needles Blvd. / Thorndale Dr. (43.44178, -80.56523) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.6242 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Canada | Ira Needles Blvd. / The Boardwalk (43.43540, -80.55823) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 45.0976 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Erb St. W / Turtle Island Recycling / Costco parking lot (43.44386, -80.57867) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.6227 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Erb St. W / Platinum Dr. / (landfill) (43.44326, -80.58032) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 55.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | |
| Dayton,
                OH Greene Co. United States | Swigart Road / James Madison Trail N (39.67417, -84.10436) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 31.2548 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Beavercreek,
                OH Greene Co. United States | Idea Cetner Blvd. / Product Way (39.71487, -84.10120) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 24.8054 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Beavercreek,
                OH Greene Co. United States | Park Overlook Dr. / Private Parking Lot (39.76489, -84.07360) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.1318 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Beavercreek,
                OH Greene Co. United States | Park Overlook Dr / Hibiscus Way (39.76605, -84.06898) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 26.6230 | Other (At-Grade) Single-Lane | 2009 | ICD estimated from Google Maps linework. | 
| Troy,
                OH Miami Co. United States | Main St. (Rte 41) / Market St. (Rte 55) (40.03961, -84.20333) | Other Existing | All-Way Yield Pedestrian Signal (red-yellow-green to drivers) | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Painted splitter islands. Right-turn-only lanes on all legs. | |
| Worcester,
                MA Worcester Co. United States | Lake Ave. / S Rd. (42.27715, -71.75925) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 38.8821 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Crosswalks on all approaches. Year Completed estimated (2010-2014). ICD estimated from Google Maps linework. | 
| Barnstable,
                MA Barnstable Co. United States | Meetinghouse Way (Rte 149) / US 6 EB / Service Rd. (41.69544, -70.38519) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.4815 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2012 | ICD estimated from Google Maps linework. | 
| Hudson,
                MA Middlesex Co. United States | Washington St. (Rte 85) / Broad St. (42.37933, -71.56500) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 55.5817 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | entry channelization islands ICD estimated from Google Maps linework. | 
| Fitchburg,
                MA Worcester Co. United States | Rindge Rd. / John Fitch Hwy / Mechanic St. (Rte 31) / Ashby State Rd. (Rte 31) (42.60170, -71.80156) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.8900 | Other (At-Grade) Single-Lane | 2010 | RTYL ICD estimated from Google Maps linework. | 
| Ayer,
                MA Middlesex Co. United States | Main St. (Rte 2A, Rte 111) / Sandy Pond Rd. / Littleton Rd. (Rte 2A, Rte 110) / Harvard Rd. (Rte 110, Rte 111) / Barnum Rd (42.55279, -71.57239) | Rotary Existing | Other None | 5 Approaches 0 Driveways 118.7740 | Other (At-Grade) Single-Lane | All-Yield Control expect for Barnum Rd (Stop-controlled) ICD estimated from Google Maps linework. | |
| Freetown,
                MA Bristol Co. United States | Country Rd. / Chace Rd. / Mason Rd (41.77072, -70.95551) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.7393 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| North Lincoln Street,
                MA Worcester Co. United States | Lincoln St. (Rte 70) / Boylston St. (Rte 70) / Benson Ave. (42.29801, -71.76636) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.7526 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Riverhead,
                NY Suffolk Co. United States | Osborn Ave. / Middle Rd. / Horton Ave. (40.93469, -72.69623) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 54.8640 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2007-2008). | 
| Gardner,
                MA Worcester Co. United States | Timpany Blvd (Rte 68) / Rte 2 (42.56665, -71.99296) | Rotary Existing | All-Way Yield None | 4 Approaches 0 Driveways 140.7379 | Freeway Ramps (Grade-Separated) Single-Lane | Crosswalks present ICD estimated from Google Maps linework. | |
| Kitchener,
                ON Waterloo Canada | Bridge St / Lancaster St W / Carisbrook Dr (43.48226, -80.48275) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.8643 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Fountain St N / Kossuth Rd / Fairway Rd N (43.44340, -80.38764) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 52.0288 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Canada | Old Zeller Dr / Fairway Rd N / Woolner Trail (43.44796, -80.40444) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.2212 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Canada | Homer Watson Blvd / Block Line Rd (43.41839, -80.47074) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.1828 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Fountain St S / Dickie Settlement Rd (43.38351, -80.39744) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 49.4763 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Pinebush RD / Thompson Dr / Tyler St (43.41532, -80.28663) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.7152 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Hespeler Rd (RR24) / Queen St (43.42000, -80.32873) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.7115 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Westmount Rd N (RR 50) / Laurelwood Dr / (parking lot) (43.47651, -80.56252) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 49.4003 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Canada | Homer Watson Blvd / Ottawa St S (43.42681, -80.48233) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 58.1148 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2017 | ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Canada | Ottawa St S / Alpine Rd / Conestoga Pkwy (43.42555, -80.48362) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 50.3094 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2017 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | University Ave E / Labrador Dr (43.51759, -80.51453) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 41.5720 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Labrador Dr / RIM Campus Ln (43.51601, -80.51332) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 24.2510 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | New Bedford Dr / Eastbridge Blvd / Shediac Crescent (43.51109, -80.50054) | Traffic Calming Circle Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.5765 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Waterloo,
                ON Waterloo Canada | Margaret Ave S / Union St E (43.46732, -80.49974) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 22.5369 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Hagey Blvd. / Wes Graham Way (43.47997, -80.54992) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 80.0000 | Other (At-Grade) Single-Lane | 2003 | Year Completed estimated (before 2005). | 
| Kitchener,
                ON Waterloo Canada | Manitou Dr / Bleams Rd (RR 56) (43.41267, -80.44937) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 47.7173 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Franklin Blvd (RR 36) / Pinebush Rd (43.41159, -80.30834) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.6590 | Other (At-Grade) Multilane (3+ Lane) | 2016 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Franklin Blvd (RR 36) / Sheldon Dr (43.40618, -80.30705) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.7962 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Franklin Blvd (RR36) / Bishop St N (RR 41) (43.39830, -80.30433) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 56.4066 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Franklin Blvd (RR36) / Clyde Rd (43.37114, -80.29522) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.5409 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Franklin Blvd ((RR36) / Savage Dr (43.36531, -80.29182) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 41.6767 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Franklin Blvd ((RR 36) / Main St (43.35831, -80.28678) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.6285 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Kitchener,
                ON Waterloo Canada | Block Line Rd / Fallowfield Dr (43.41875, -80.46799) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | Year Completed estimated (2009-2012). | 
| Waterloo,
                ON Waterloo Canada | Laurelwood Dr / James Downey Way (43.47541, -80.56870) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.6010 | Other (At-Grade) Single-Lane | 2015 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Laurelwood Dr / Beaver Creek Rd (43.47220, -80.57985) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.9349 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Waterloo,
                ON Waterloo Canada | Laurelwood Dr. / Blue Beach Blvd. (43.46997, -80.59517) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2003 | Year Completed estimated (2001-2004). | 
| Kitchener,
                ON Waterloo Canada | Grand Flats Trail / Eden Oak Trail (43.45085, -80.40324) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 29.4794 | Other (At-Grade) Single-Lane | 2015 | ICD estimated from Google Maps linework. | 
| Cambridge,
                ON Waterloo Canada | Horton Walk / Baldwin Dr. (43.44729, -80.30699) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.0000 | Other (At-Grade) Single-Lane | 2010 | Year Completed estimated (2009-2012). | 
| Johns Creek,
                GA Fulton Co. United States | Boles Rd / Bell Rd (34.03935, -84.15603) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.5874 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Newport,
                KY Campbell Co. United States | W 4th St. / 3rd St. / 5th St. / Chestnut Way (39.08959, -84.49992) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 66.7434 | Other (At-Grade) Single-Lane | 2018 | ICD estimated from Google Maps linework. | 
| Sundre,
                AB Alberta Canada | Hwy 27 (Main Ave. W) / 4th St. (51.79629, -114.64517) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-lane w/ Traversable Central Island | 2017 | Temporary, modular installation. | 
| Sundre,
                AB Alberta Canada | Hwy 27 (Main Ave. W) / 3rd St. (51.79663, -114.64360) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 21.0000 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2017 | Temporary, modular installation. | 
| Sundre,
                AB Alberta Canada | Hwy 27 (Main Ave. W) / 2nd St. (51.79706, -114.64184) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2017 | Temporary, modular installation. | 
| Jackson,
                GA Butts Co. United States | GA 36 / Keys Ferry Rd. / Barnetts Bridge Rd. (33.38354, -83.90334) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Initially installed in 2017 as a modular, rapid-install roundabout (ICD = 70 ft). Converted to single-lane roundabout with raised central island in 2022. https://www.jacksonprogress-argus.com/news/roundabout-replacement-at-hwy-36-and-barnetts-bridge-road-in-butts-county-begins-jan-31/article_58c8363c-806c-11ec-be5a-efce5e2209d4.html | 
| Annandale,
                VA Fairfax Co. United States | Ravensworth Rd. / Jayhawk St. / Fountain Head Dr. (38.82630, -77.19993) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 22.8600 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2018 | Modular, rapid-install roundabout. | 
| Lynnfield,
                MA Essex Co. United States | Salem St (Rt 129) / Lynnfield St. (42.51280, -70.99137) | Rotary Existing | All-Way Yield None | 4 Approaches 0 Driveways 159.3472 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Somerville,
                MA Middlesex Co. United States | Great River Rd. / Grand Union Blvd. (42.39621, -71.08140) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.7524 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. |