| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Houston,
                TX Harris Co. United States | Meadowglen Ln. / Seagler Rd. (29.73162, -95.55486) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Single-Lane | 2005 | |
| Winnipeg,
                MB Winnipeg Capital Region Canada | Shorehill Dr. / Bridgetown Dr. (49.82256, -97.07655) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.9854 | Other (At-Grade) Single-Lane | 2003 | ICD estimated from Google Maps linework. | 
| Winnipeg,
                MB Winnipeg Capital Region Canada | Shorehill Dr. / (unknown #2) (49.82688, -97.07213) | Roundabout Existing | All-Way Yield None | 0 Approaches 0 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2006 | |
| Oshkosh,
                WI Winnebago Co. United States | US 45 / Fernau Ave. / Lake Butte des Morts Dr. (44.05513, -88.57150) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | Opened August 24, 2010. | 
| Chattanooga,
                TN Hamiltion Co. United States | Igou Gap Rd. / Clearview Dr. / (residential driveway) (35.02494, -85.15220) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.4070 | Other (At-Grade) Single-Lane | 2006 | driveway from single family residence has a full approach on the north side Previously controlled by stop sign Functional Class: Local ICD estimated from Google Maps linework. | 
| Chattanooga,
                TN Hamilton Co. United States | Goodwin Rd. / (East Brainerd Elementary School driveway) (35.02699, -85.14712) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.3624 | Other (At-Grade) Single-Lane | 2014 | Proposed replacement of cloverleaf ramps with diamond ramps on SR 153 and two multi-lane roundabouts on Hixson Pike. Currently high accident area due to weaving, lack of merge areas, and nearby signals. ICD estimated from Google Maps linework. | 
| Ottawa,
                ON City of Ottawa Canada | Princess Ave. / Rockcliffe Pkwy. (45.44599, -75.68909) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.4647 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Ottawa,
                ON City of Ottawa Canada | Beaulieu Pl. / Villeneuve Private (45.42574, -75.62828) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 20.1173 | Other (At-Grade) Single-Lane | 2006 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Ottawa,
                ON City of Ottawa Canada | Beauparc Private / Villeneuve Private (45.42353, -75.62725) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.6328 | Other (At-Grade) Single-Lane | 2006 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Ottawa,
                ON City of Ottawa Canada | Jockvale Rd. / Fable St. / Weybridge Dr. (45.27378, -75.76441) | Roundabout Existing | All-Way Yield Active Pedestrian Warning (flashing yellow) | 4 Approaches 0 Driveways 32.7784 | Other (At-Grade) Single-Lane | 2007 | Functional Class: Major Collector ICD estimated from Google Maps linework. | 
| Ottawa,
                ON City of Ottawa Canada | Huntmar Rd. / Rosehill Ave. (45.28658, -75.91740) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.4516 | Other (At-Grade) Single-Lane | 2007 | Functional Class: Major Collector ICD estimated from Google Maps linework. | 
| Clearwater,
                FL Pinellas Co. United States | Fairmont Ave. / Fulton St. (27.98243, -82.79311) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2008 | Opened May 2008. | 
| Clearwater,
                FL Pinellas Co. United States | Ridgewood St. / Richards Ave. (27.97013, -82.76930) | Traffic Calming Circle Existing | All-Way Yield None | 0 Approaches 0 Driveways 34.8091 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Clearwater,
                FL Pinellas Co. United States | Ridgewood St. / Baker Ave. (27.97012, -82.76842) | Traffic Calming Circle Existing | All-Way Yield None | 0 Approaches 0 Driveways 48.5218 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Clearwater,
                FL Pinellas Co. United States | Ridgewood St. / Casler Ave. (27.97013, -82.76752) | Traffic Calming Circle Existing | All-Way Yield None | 0 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2002 | |
| Clearwater,
                FL Pinellas Co. United States | Richards Ave. / Baker Ave. / Casler Ave. (27.96847, -82.76841) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2002 | |
| Clearwater,
                FL Pinellas Co. United States | Palmetto St. / MLK Ave. (N Greenwood Ave.) (27.97542, -82.79176) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2004 | |
| Clearwater,
                FL Pinellas Co. United States | Cleveland St. / Lake Dr. (27.96550, -82.77112) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.9080 | Other (At-Grade) Single-Lane | 2008 | |
| Clearwater,
                FL Pinellas Co. United States | Cleveland St. / Corona Ave. (27.96546, -82.75991) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.9080 | Other (At-Grade) Single-Lane | 2008 | |
| Clearwater,
                FL Pinellas Co. United States | Cleveland St. / Saturn Ave. (27.96544, -82.76489) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.9080 | Other (At-Grade) Single-Lane | 2008 | |
| Montana City,
                MT Lewis and Clark Co. United States | SR 282 / Jackson Creek Rd. (46.54082, -111.94824) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Other (At-Grade) Single-Lane | 2007 | Opened October 2007. | 
| Helena,
                MT Lewis and Clark Co. United States | Saddle Dr. / Colonial Dr. (46.57319, -111.97703) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.1246 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Missoula,
                MT Missoula Co. United States | Union Pacific St. / O'Leary St. / Clark Fork Ln. (46.88880, -114.04560) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2003 | |
| Val d'Or,
                QC Abitibi-Témiscamingue Region Canada | Boulevard Tetrault / Chemin Sullivan (48.11272, -77.82042) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 50.0000 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2003 | Merging right-turn bypass lanes on north and south legs. Widened from single-lane to 2x2 and RRFB added to west leg in 2024 | 
| Amos,
                QC Abitibi-Témiscamingue Region Canada | Rue de l'Aeroport / Rue Principale (48.56037, -78.11145) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 52.1692 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Quebec,
                QC Capitale-Nationale Region Canada | Boulevard de la Morille / Boulevard Robert Bourassa (46.83900, -71.31117) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.7642 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Miramichi,
                NB Northumberland Canada | Rte 8 Bypass / Rte 430 (47.00483, -65.59289) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2006 | |
| Lee's Summit,
                MO Jackson Co. United States | SW Longview Blvd. / SW Fascination Dr. (38.91153, -94.44954) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.6077 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | ICD estimated from Google Maps linework. | 
| Lee's Summit,
                MO Jackson Co. United States | SW Longview Blvd. / SW Keesler Dr. (38.90892, -94.44749) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.6093 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | ICD estimated from Google Maps linework. | 
| Lee's Summit,
                MO Jackson Co. United States | SW Longview Blvd. / SW Longview Rd. / SW Redbuck Cir. (38.90582, -94.44718) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.1878 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | ICD estimated from Google Maps linework. | 
| Lee's Summit,
                MO Jackson Co. United States | Bridlewood Dr. / Lewis Dr. (38.91375, -94.44021) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2007 | |
| Burnaby,
                BC Greater Vancouver Regional District Canada | East Campus Rd. / University Dr. E (49.27628, -122.90450) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 40.0000 | Other (At-Grade) Single-Lane | 2003 | On the Simon Fraser University campus. Year Completed estimated (2002-2004). | 
| Calgary,
                AB Calgary Region Canada | Springbank Blvd. / Spring Mews (51.01849, -114.19630) | Traffic Calming Circle Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.0000 | Other (At-Grade) Single-Lane | 1998 | |
| Yorkton,
                SK N/A Canada | Bradbrooke Dr. / Gladstone Ave. / King St. / Winchester St. (51.20293, -102.47442) | Roundabout Existing | All-Way Yield Other | 0 Approaches 0 Driveways 35.0000 | Other (At-Grade) Single-Lane | 2007 | At-grade rail crossing on east leg (crossbucks only, no active devices). Year Completed estimated (2004-2009). | 
| Camrose,
                AB Central Alberta Canada | Valleyview Dr. / 28 Ave. (52.99531, -112.83900) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.5045 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Camrose,
                AB Central Alberta Canada | 73 St. / 45 Ave. (53.01372, -112.86572) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.0000 | Other (At-Grade) Single-Lane | 2005 | No splitter islands. | 
| Calgary,
                AB Calgary Region Canada | Springbank Blvd. / Springbank Dr. (51.01912, -114.20230) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.0000 | Other (At-Grade) Single-Lane | 2004 | Year Completed estimated (2002-2005). | 
| North Saanich,
                BC Capital Regional District Canada | Willington Rd. / E. Saanich Rd. (48.63520, -123.42030) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.9387 | Other (At-Grade) Single-Lane | 2005 | http://www.icbc.com/road_safety/pdf/vancouver%20island/north%20saanich.pdf ICD estimated from Google Maps linework. | 
| North Cowichan,
                BC Cowichan Valley Regional District Canada | Lakes Rd. / Beverley Rd. (48.78476, -123.68480) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 29.9034 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| North Cowichan,
                BC Cowichan Valley Regional District Canada | Chemainus Rd. / Henry Rd. (48.91472, -123.71340) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.8258 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| North Cowichan,
                BC Cowichan Valley Regional District Canada | Tzouhalem Rd. / Maple Bay Rd. (48.78071, -123.67160) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.1188 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| North Cowichan,
                BC Cowichan Valley Regional District Canada | Sherman Rd. / Cowichan Lake Rd. (48.79214, -123.73620) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.4726 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Delta,
                BC Metro Vancouver Canada | 82nd Ave. / 116th St. (49.15220, -122.90150) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 21.0911 | Other (At-Grade) Unknown | 2005 | ICD estimated from Google Maps linework. | 
| Kelowna,
                BC Central Okanogan Canada | Burtch Rd. / Byrns Rd. (49.87102, -119.46580) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.1717 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Kelowna,
                BC Central Okanogan Canada | Swamp Rd. / Casorso Rd. (49.84534, -119.46640) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 23.1050 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Kelowna,
                BC Central Okanogan Canada | Benvoulin Rd. / Casorso Rd. (49.84882, -119.46910) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.1952 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Surrey,
                BC Greater Vancouver Regional District Canada | King George Hwy / 14th St. (Ave.?) (49.02746, -122.77110) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.7585 | Other (At-Grade) Single-Lane | 2007 | http://www.icbc.com/road_safety/road_improve_pu/surrey.asp ICD estimated from Google Maps linework. | 
| Topeka,
                KS Shawnee Co. United States | SW 21st St. / Urish Rd. (39.02899, -95.78088) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.1005 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Completed November 2008. ICD estimated from Google Maps linework. | 
| Allen,
                TX Collin Co. United States | N Allen Dr. / St. Mary Dr. (33.10674, -96.67113) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2006 | . | 
| Denton,
                TX Denton Co. United States | Wheeler Ridge Dr. / Breton Dr. (33.15462, -97.10275) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 54.8630 | Other (At-Grade) Single-Lane | 2005 | . | 
| Rowlett,
                TX Dallas Co. United States | Main St. / Coyle St. / Skyline Dr. (32.90316, -96.56289) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2006 | . | 
| Great Neck,
                NY Nassau Co. United States | Barstow Rd. / South Station Pl. (40.78735, -73.72462) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.6068 | Other (At-Grade) Single-Lane | 2003 | High pedestrian activitiy associated with commuter rail station below the roundabout. ICD estimated from Google Maps linework. | 
| Pemberton,
                BC Pemberton Valley Canada | Portage Rd. / Aspen Blvd. (50.32201, -122.80508) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signal/Beacon | 3 Approaches 0 Driveways 35.0000 | Other (At-Grade) Single-Lane | ||
| Vancouver,
                BC Greater Vancouver Regional District Canada | 16th Ave. / Westbrook Mall (49.25575, -123.23630) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.0940 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | On campus of University of British Columbia. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Lawrence,
                KS Douglas Co. United States | E. 17th St. / New Hampshire St. (38.95364, -95.23475) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 13.0029 | Other (At-Grade) Single-Lane | 2005 | Year Completed estimated (fuzzy aerial photos). ICD estimated from Google Maps linework. | 
| Rio Puerco,
                NM Bernalillo Co. United States | Central Ave. / I-40 EB Ramps (35.03048, -106.94750) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 68.4580 | Freeway Ramps (Grade-Separated) Single-Lane | 2008 | Owned by New Mexico DOT. Previously controlled by stop control ICD estimated from Google Maps linework. | 
| Forest Hill,
                MD Harford Co. United States | MD 23 / Commerce Rd. (39.57390, -76.37067) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2008 | On August 9, 2008 a new roundabout opened on Maryland Route 23 and an extended Commerce Drive in Forest Hill (Harford County), Maryland. It was built by a private developer to improve access to the Forest Hill Industrial Park by using Route 23, a limited access highway, rather than the current access road to Commerce Drive, Jarrettsville Road, which is primarily a residential route. | 
| Cabazon,
                CA Riverside Co. United States | Apache Trl. / I-10 EB Ramps (33.92071, -116.80680) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 3 Approaches 0 Driveways 54.5087 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2008 | Opened July 11, 2008. http://www.pe.com/localnews/rivcounty/stories/PE_News_Local_S_circle21.46d763e.html. Railroad in close proximity. ICD estimated from Google Maps linework. | 
| Cabazon,
                CA Riverside Co. United States | Apache Trl. / Thunder Rd. / Seminole Dr. / I-10 WB Ramps (33.92192, -116.80610) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 79.2480 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) | 2008 | Opened July 11, 2008. http://www.pe.com/localnews/rivcounty/stories/PE_News_Local_S_circle21.46d763e.html. | 
| Pearl City,
                HI Oahu Co. United States | Kuahaka St. / Kalauipo St. (21.41052, -157.96720) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 24.4619 | Other (At-Grade) Single-Lane | 2003 | ICD estimated from Google Maps linework. | 
| Pearl City,
                HI Oahu Co. United States | Kuahaka St. / Kaweloka St. (21.40495, -157.97320) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 17.7912 | Other (At-Grade) Single-Lane | 2003 | ICD estimated from Google Maps linework. | 
| Kailua,
                HI Oahu Co. United States | Ulupuni St. / Uluhala St. (21.37803, -157.75590) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 15.5702 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Pukalani,
                HI Maui Co. United States | Kupaoa St. / Ohiaku St. (20.82094, -156.33001) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-Lane | 2005 | |
| Lihue,
                HI Kauai Co. United States | Pikake St. / Kauila St. / Makaa St. (21.96538, -159.37974) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2006 | |
| West Fargo,
                ND Cass Co. United States | CR 17 / 52nd Ave S. (46.80409, -96.90268) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 46.5982 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Neenah,
                WI Winnebago Co. United States | Co. Hwy. PP / Jacobsen Rd. / American Dr. (44.21429, -88.47825) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.8167 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| San Diego,
                CA San Diego Co. United States | Sea Ridge Dr. / Chelsea St. (32.80875, -117.26520) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 21.0801 | Other (At-Grade) Single-Lane | 2007 | Marginal roundabout. No splitter islands. ICD estimated from Google Maps linework. | 
| West Haven,
                CT New Haven Co. United States | Rte 162 (Jones Hill Rd.) / SR 705 (Ocean Avenue) (41.23624, -72.98605) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.8421 | Other (At-Grade) Single-Lane | 2007 | Opened fall 2007. Connecticut DOT project. Previously controlled by one-way stop ICD estimated from Google Maps linework. | 
| Clackamas,
                OR Clackamas Co. United States | SE 172nd Ave. / SE Creekwood Rd. (45.41880, -122.48550) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.5928 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Creekwood Rd. is new roadway; SE 172nd Avenue is existing. ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | King Ave. / Olympic Blvd. (45.75507, -108.61360) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.1658 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Near Kohl's retail shopping center. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Meridian,
                ID Ada Co. United States | Pine St. / Webb Rd. (43.61220, -116.36840) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.9126 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | ICD estimated from Google Maps linework. | 
| Burnside,
                AZ Apache Co. United States | US 191 / AZ 264 (35.75473, -109.62710) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Single-Lane | 2009 | Right-turn bypass lane. Elliptical shaped. ICE = 180 ft x 160 ft. | 
| Howard,
                WI Brown Co. United States | Riverdale Dr. (CTH J) / CTH RK (44.54785, -88.10120) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.4509 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Flagstaff,
                AZ Coconino Co. United States | Pine Cliff Dr. / Gemini Dr. (35.20808, -111.63541) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2008 | By developer. | 
| Flagstaff,
                AZ Coconino Co. United States | S Woody Mountain Rd. / W Presidio Dr. (35.18308, -111.69266) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2007 | Year Completed estimated (2006-2007). | 
| Billings,
                MT Yellowstone Co. United States | King Ave. / St. Vincent Way (45.75520, -108.62260) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.9990 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Bozeman,
                MT Gallatin Co. United States | Baxter Ln. / Ferguson Ave. (45.70024, -111.09310) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2003 | |
| Bozeman,
                MT Gallatin Co. United States | Laurel Pkwy. / Annie St. (45.68916, -111.11383) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2003 | |
| Bozeman,
                MT Gallatin Co. United States | Laurel Pkwy. / Glenellen Dr. / Sherwood Way (45.69050, -111.11401) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2003 | |
| Bloomington,
                IN Monroe Co. United States | W Tapp Rd. / S Adams St. (39.13650, -86.55431) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.4967 | Other (At-Grade) Single-Lane | 2008 | No truck apron and wide circulatory roadway. ICD estimated from Google Maps linework. | 
| West Lafayette,
                IN Tippicanoe Co. United States | McClure Ave. / Win Hentschel Blvd. (40.46592, -86.92810) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 59.0613 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | W. 136th St. / Ditch Rd. (39.98478, -86.18355) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.2650 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | W. 141st St. / Ditch Rd. (39.99198, -86.18353) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.6006 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | W. 141st St. / Springmill Rd. (39.99215, -86.16481) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.5156 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Valparaiso,
                IN Porter Co. United States | Laporte Ave. / Sturdy Rd. (41.46645, -87.03669) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2008 | Right-turn-only lanes on west, east, and south legs. | 
| Kokomo,
                IN Howard Co. United States | Center Rd. / Webster St. (40.43313, -86.13661) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.9995 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                IA Blackhawk Co. United States | Independence Ave. (IA 281) / Raymond Rd. (V49) (42.49790, -92.21953) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.7456 | Other (At-Grade) Single-Lane | 2008 | Opened Octboer 29, 2008. First roundabout in Iowa with 55mph approaches. Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Cedar Falls,
                IA Blackhawk Co. United States | Cedar Heights Dr. / Viking Rd. (42.48899, -92.41638) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 54.8640 | Other (At-Grade) Single-Lane | 2007 | Right-turn-only lane on west leg. Intersection relocated from T-intersection to the south. Opened November 2007. | 
| Clive,
                IA Dallas Co. United States | NW 156th St. / Boston Pkwy. (41.62066, -93.83356) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.7487 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | ICD estimated from Google Maps linework. | 
| Clive,
                IA Dallas Co. United States | Berkshire Pkwy. / Sheridan Ave. (41.61697, -93.84561) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.5370 | Other (At-Grade) Single-Lane | 2001 | ICD estimated from Google Maps linework. | 
| Clive,
                IA Dallas Co. United States | Berkshire Pkwy. / Boston Pkwy. (41.62153, -93.84657) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.3558 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Coralville,
                IA Johnson Co. United States | E. 9th St. / Quarry Rd. (41.68176, -91.55988) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5714 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Opened August 15, 2006. ICD estimated from Google Maps linework. | 
| Coralville,
                IA Johnson Co. United States | Holiday Rd. / Corridor Way (41.69709, -91.60332) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.3202 | Other (At-Grade) Single-Lane | 2007 | 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. | 
| Urbandale,
                IA Dallas Co. United States | 142nd St. / Douglas Pkwy. (41.62940, -93.80899) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.6355 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Crossing Blvd. / Olympic Blvd. (45.75216, -108.61570) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.1677 | Other (At-Grade) Single-Lane | 2009 | Functional Class: Local ICD estimated from Google Maps linework. | 
| West Des Moines,
                IA Dallas Co. United States | Wistful Vista Dr. / S. 79th St. (41.56572, -93.81668) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.6372 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| The Villages,
                FL Sumter Co. United States | Morse Blvd. / Odell Cir. (north) (28.89448, -81.96899) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.2367 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2005 | ICD estimated from Google Maps linework. | 
| The Villages,
                FL Sumter Co. United States | Morse Blvd. / Bonita Blvd. (28.87963, -81.96627) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 64.0080 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2006 | |
| The Villages,
                FL Sumter Co. United States | Morse Blvd. / Odell Cir. (south) (28.87232, -81.96546) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.3853 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | ICD estimated from Google Maps linework. |