Roundabouts Database Index

29492 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Naples, FL Collier Co. United States	7th St. N. / 7th Ave. N. (26.15619, -81.79971)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5125	Other (At-Grade) Single-Lane	1998	Installed for traffic calming. Detailed traffic volume, speed data available. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Montpelier, VT Washington Co. United States	Keck Circle (Main St. / Spring St.) (44.26283, -72.57178)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.6594	Other (At-Grade) Single-Lane	1995	Main Street Middle School located one block NE of roundabout. ICD estimated from Google Maps linework.
Nederland, CO Boulder Co. United States	SH 72 / SH 119 / 2nd St. / Bridge St. (39.96261, -105.51030)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 23.8006	Other (At-Grade) Single-Lane	1995	Opened June 1995. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Tampa, FL Hillsborough Co. United States	North Blvd. / Country Club Dr. (28.05466, -82.46759)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 14.7559	Other (At-Grade) Single-Lane	1996	Completed June 1996. ICD estimated from Google Maps linework.
Scottsdale, AZ Maricopa Co. United States	N. 64th St. / E. Lafayette Blvd. (33.49474, -111.94330)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.9119	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Manchester, VT Bennington Co. United States	Rte. 7A / Equinox (Grand Union) (43.17309, -73.06181)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.1304	Other (At-Grade) Single-Lane	1997	Roundabout is in a retail/outlet district in a resort area. VT 7-A is posted as a Historic Highway and is the local business route, while the parallel US 7 is a two-lane, limited access bypass that carries through truck traffic. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	Jenkins Ranch Rd. / Lizard Head (south) (37.28605, -107.84710)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 24.7061	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	Jenkins Ranch Rd. / Lizard Head (north) (37.28920, -107.84310)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 27.5556	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Modesto, CA Stanislaus Co. United States	Chandon Dr. / Calero Dr. (37.67642, -120.93380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4132	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Modesto, CA Stanislaus Co. United States	Bowen Ave. / Fremont Ave. (37.67470, -121.00260)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.9061	Other (At-Grade) Single-Lane	2002	Previously controlled by twsc ICD estimated from Google Maps linework.
Stuart, FL Martin Co. United States	S. Dixie Hwy / SR 76 / SR A1A (27.19767, -80.25266)	Other Existing	Other None	0 Approaches 0 Driveways 26.5569	Other (At-Grade) Multilane (2 Lane, unspecified)		Railroad crossing next to circle. ICD estimated from Google Maps linework.
Stuart, FL Martin Co. United States	N. Colorado Ave. / E. Osceola St. (27.19860, -80.25300)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 32.9303	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Phoenix, AZ Maricopa Co. United States	S. Pointe Pkwy. W / S. Pointe Pkwy. E (33.37649, -111.97210)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.8650	Other (At-Grade) Single-Lane	1994	Before 1997. ICD estimated from Google Maps linework.
Douglasville, GA Douglas Co. United States	SR 5 / SR 166 (33.61361, -84.83688)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8602	Other (At-Grade) Single-Lane	2007	Fatal crash November 24, 2011. 11861-05. ICD estimated from Google Maps linework.
(unincorporated), MD Anne Arundel Co. United States	Arundel Beach Rd. / Leelyn Dr. (39.07955, -76.54560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9594	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Brunswick, MD Frederick Co. United States	MD 17 / A St. / B St. / Maryland Ave. (39.31433, -77.62807)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 42.5054	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Catonsville, MD Baltimore Co. United States	MD 372 / Hilltop Rd. / Entrance to UMBC (39.25733, -76.71964)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.1417	Other (At-Grade) Single-Lane	1998	Functional Class: Collector ICD estimated from Google Maps linework.
Lisbon, MD Howard Co. United States	MD 94 / Old Frederick Rd. (Lisbon North) (39.34810, -77.06930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7839	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 WB Ramps (39.20846, -76.78294)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.3154	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 EB Ramps (39.20733, -76.78243)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.5396	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	Snowden River Pkwy. / MD 100 WB Ramps (39.21233, -76.79544)	Roundabout Existing	All-Way Yield Metering Signal	3 Approaches 0 Driveways 25.9105	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. Metering signal on Snowden River Pkwy approach. ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	Jenkins Ranch Rd. / Ophir Dr. (37.28321, -107.85120)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 26.6075	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Huntsville, AL Madison Co. United States	Old Monrovia Rd. / Providence Main St. / Indian Creek Rd. (34.75765, -86.68776)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.3429	Other (At-Grade) Single-Lane	2004	Single-lane with right-turn only lanes. Built as staged construction with potential to be multilane. ICD estimated from Google Maps linework.
Camp Verde, AZ Yavapai Co. United States	Middle Verde / Cliff Castle (34.60927, -111.86130)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.3535	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Federalsburg, MD Caroline Co. United States	MD 307 / MD 313 / MD 318 (38.68938, -75.78949)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.4247	Other (At-Grade) Single-Lane	1999	Rural, installed for safety reasons Previously controlled by two-way stop ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE Ladd Circle (45.50850, -122.64940)	Other Existing	Unknown None	0 Approaches 0 Driveways 92.0689	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Cedar Lake Township, MN Scott Co. United States	SH 13 (Langford Ave.) / CR 2 (260th St.) (44.57259, -93.50546)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.9429	Other (At-Grade) Single-Lane	2005	Rural location, intersection of two 55-mph facilities. Previous 2-way stop had 2 fatal crashes and 50 injury crashes in 5 years. Opened to traffic in September 2005. During 12 months after opening, 1 reported crash involving single motorcycle running off road. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Copley Township, OH Summit Co. United States	Ridgewood Rd. / Hametown Rd. (41.11395, -81.66791)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1947	Other (At-Grade) Single-Lane	2006	Opened August 21, 2006. ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Ward Circle (Mass. Ave. / Nebraska Ave.) (38.93792, -77.08590)	Signalized Roundabout/Circle Existing	Signal None	0 Approaches 0 Driveways 80.8214	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Green Bay, WI Brown Co. United States	W. Mason St. (STH 32-STH 54) / US 41 NB Ramps (44.52415, -88.08103)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 43.4266	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2012	Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework.
Lakewood, CO Jefferson Co. United States	Arbutus Dr. / Red Rocks Community College (39.71903, -105.14840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.7465	Other (At-Grade) Single-Lane	2001	Functional Class: Collector ICD estimated from Google Maps linework.
St. Simons, GA Glynn Co. United States	Frederica Rd. / Lawrence Rd. (31.21650, -81.37550)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.8563	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Wall, NJ Monmouth Co. United States	NJ 35 / Atlantic Ave. (Brielle Circle) (40.13232, -74.06525)	Rotary Existing	Other Unknown	4 Approaches 0 Driveways 129.6649	Other (At-Grade) Single-Lane		Traffic circle conversion ICD estimated from Google Maps linework.
Southampton, NJ Burlington Co. United States	US 206 / NJ 70 (Red Lion Circle) (39.88715, -74.74104)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 136.5464	Other (At-Grade) Single-Lane		Traffic circle conversion Functional Class: Arterial ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Dupont Circle (Mass Ave. / Conn. Ave. / New Hampshire Ave.19th St. / P St.) (38.90965, -77.04344)	Signalized Roundabout/Circle Existing	Signal None	10 Approaches 0 Driveways 137.5441	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Washington Circle (Penn. Ave. / New Hampshire Ave. / 23rd St. / K St.) (38.90252, -77.05010)	Signalized Roundabout/Circle Existing	Signal None	8 Approaches 0 Driveways 119.8984	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Scott Circle (Mass. Ave. / Rhode Isl. Ave. / 16th St. / N St.) (38.90725, -77.03654)	Signalized Roundabout/Circle Existing	Signal None	6 Approaches 0 Driveways 51.1161	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Logan Circle (Rhode Isl. Ave. / Vermont Ave. / 13th St. / P St.) (38.90965, -77.02963)	Signalized Roundabout/Circle Existing	Signal None	5 Approaches 0 Driveways 120.8157	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Thomas Circle (Mass Ave. / Vermont Ave. / 14th St. / M St.) (38.90565, -77.03196)	Signalized Roundabout/Circle Existing	Signal None	6 Approaches 0 Driveways 75.2817	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Sheridan Circle (Mass Ave. / 23rd St. / R St.) (38.91214, -77.05065)	Rotary Existing	Uncontrolled None	0 Approaches 0 Driveways 69.6989	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
De Pere, WI Brown Co. United States	Grant St. (CTH EE) / Lawrence Dr. (44.44511, -88.09367)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.8430	Other (At-Grade) Single-Lane	2008	Opened September 30, 2008. ICD estimated from Google Maps linework.
Truckee, CA Nevada Co. United States	Donner Pass Rd. / W. River St. / McIver Crossing (39.32510, -120.19200)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.1077	Other (At-Grade) Single-Lane	1998	Fatal crash. 11861-05. Functional Class: Arterial ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	Jenkins Ranch Rd. / Kennebec Dr. (37.29216, -107.84010)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 23.7539	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Pearl, MS Rankin Co. United States	MS 475 (Airport Rd.) / Old Brandon Rd. (32.29057, -90.07133)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 34.3273	Other (At-Grade) Single-Lane	1997	Use of paint to achieve (?) deflection. ICD estimated from Google Maps linework.
Gorham, ME Cumberland Co. United States	US 202 / Rte. 4 / Rte. 237 (43.72846, -70.42525)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.0285	Other (At-Grade) Single-Lane	1997	Previously controlled by two-way stop ICD estimated from Google Maps linework.
(unincorporated), MD Prince Georges Co. United States	Ft. Washington Rd. / Swan Creek Rd. (38.72498, -77.00491)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1576	Other (At-Grade) Single-Lane	1997	Fourth leg added. Year Completed estimated (before 2001). ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Marketplace Dr. (39.52092, -76.35262)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.5602	Other (At-Grade) Single-Lane	1996	Three leg, off-set roundabout - off-set due to lack of r/w on top side of Functional Class: Collector ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Banneker Rd. / Cul-de-sac (39.21141, -76.87041)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 17.5824	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Trotter Rd. / South Wind Cir. (39.20956, -76.91891)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 23.1353	Other (At-Grade) Single-Lane	1997	Functional Class: Collector. Year Completed estimated (1993-2001). ICD estimated from Google Maps linework.
Topeka, KS Shawnee Co. United States	Rice Rd. / I-70 WB Ramps / Sycamore Dr. (39.03610, -95.62310)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.5293	Freeway Ramps (Grade-Separated) Single-Lane	2000	Part of a major realignment of I-70 and K-4. Sycamore Drive is one way with two westbound lanes (into the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. ICD estimated from Google Maps linework.
Topeka, KS Shawnee Co. United States	Rice Rd. / I-70 EB Ramps / Cyprus Drive (39.03190, -95.62320)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.8817	Freeway Ramps (Grade-Separated) Single-Lane	2000	Part of a major realignment of I-70 and K-4. Cyprus Drive is One Way Eastbound (away from the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. ICD estimated from Google Maps linework.
Green Bay, WI Brown Co. United States	W. Mason St. (STH 32-STH 54) / US 41 SB Ramps (44.52418, -88.08284)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.9811	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2012	Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Tenley Circle (Nebraska Ave. / Wisconsin Ave. / Yuma St.) (38.94628, -77.07875)	Signalized Roundabout/Circle Existing	Signal None	0 Approaches 0 Driveways 73.3809	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Sherman Circle (Kansas Ave. / Illinois Ave. / Crittenden St.) (38.94733, -77.02190)	Rotary Existing	All-Way Stop None	6 Approaches 0 Driveways 89.1704	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	Grant Circle (New Hampshire Ave. / Illinois Ave. / Varnum St. / NW 5th St.) (38.94312, -77.01926)	Rotary Existing	All-Way Stop None	8 Approaches 0 Driveways 120.7587	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Cesar E Chavez Blvd. (NE 39th Ave.) / NE Glisan St. (45.52640, -122.62300)	Other Existing	All-Way Stop None	4 Approaches 0 Driveways 68.6113	Other (At-Grade) Multilane (2 Lane, unspecified)		Stop-controlled entries into circle. Bus stop within circulatory roadway. Historical rotary with stop control. ICD estimated from Google Maps linework.
Beaverton, OR Washington Co. United States	SW Teal Blvd. / SW 155th Ave. / SW Nutcracker Ct. (45.44060, -122.83760)	Other Existing	All-Way Stop None	4 Approaches 0 Driveways 37.7099	Other (At-Grade) Single-Lane		Characteristics of a roundabout, but yield signs replaced with stop signs in 1998. ICD estimated from Google Maps linework.
Berkeley, CA Alameda Co. United States	Marin Ave. / Los Angeles Ave. / Del Norte St. / Arlington Ave. (37.89015, -122.27240)	Other Existing	One-Way/Two-Way Stop None	6 Approaches 0 Driveways 25.4489	Other (At-Grade) Single-Lane		Free movement on Marin Ave.; rest are stop-controlled ICD estimated from Google Maps linework.
Clackamas, OR Clackamas Co. United States	Monterey Ave. / Stevens Rd. (45.43780, -122.56390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.8738	Other (At-Grade) Single-Lane	2006	Fourth leg serves New Hope Community Church parking lot. ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Tollgate Rd. / Montrose Way (39.48198, -76.32751)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5762	Other (At-Grade) Single-Lane	2003	Elementary school and library to north, another school to south. Functional Class: Collector ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	West End Rd. / Spear Ave. / Saint Louis Rd. (40.88910, -124.08210)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.0866	Other (At-Grade) Single-Lane	1998	Functional Class: Arterial ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	Samoa Blvd. / Union St. (40.86140, -124.07730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.2273	Other (At-Grade) Single-Lane	1999	Functional Class: Arterial ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Westover Ln. / Crisfield Dr. (39.46859, -76.32162)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7377	Other (At-Grade) Single-Lane	2002	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	Samoa Blvd. / Buttermilk Ln. (40.85710, -124.07250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.1329	Other (At-Grade) Single-Lane	1999	Functional Class: Arterial ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	Guintoli Ln. / US 101 SB Ramps (40.90400, -124.08920)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.7180	Freeway Ramps (Grade-Separated) Single-Lane	2005	ICD estimated from Google Maps linework.
Canmore, AB Central Alberta Canada	Three Sisters Pkwy. / Stewart Creek Dr. (51.05031, -115.31370)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.7860	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	Guintoli Ln. / US 101 NB Ramps (40.90492, -124.08510)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.3015	Freeway Ramps (Grade-Separated) Single-Lane	2005	ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	Florida Rd. / Riverview Dr. (37.28319, -107.86900)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4086	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	CR 238 / Fort Lewis Dr. / College Dr. (37.27940, -107.85940)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.7643	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Durango, CO La Plata Co. United States	(Mercy Regional Medical Center ring road) / (unknown) (37.23677, -107.82050)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2308	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Visalia, CA Tulare Co. United States	Houston Ave. / Santa Fe St. / NE 3rd Ave. (36.34183, -119.28780)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 50.9874	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NW 25th Ave. / NW Quimby St. (45.53328, -122.70277)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 15.8958	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. ICD estimated from Google Maps linework.
Port Orchard, WA Kitsap Co. United States	Mile Hill Dr. (Hwy 166) / Bethel Ave. (47.53467, -122.62730)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.7045	Other (At-Grade) Single-Lane	1998	Previously a Y Intersection. Opened June 1998. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Modesto, CA Stanislaus Co. United States	La Loma / James St. / G St. (37.64360, -120.98740)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 34.0452	Other (At-Grade) Single-Lane	1997	Permanent installation with landscaping in place Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Clackamas, OR Clackamas Co. United States	Monterey Ave. / Causey Ave. / William Otty Rd. (45.44020, -122.55510)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.7102	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Montréal, QC Montréal Region Canada	Ave. Marie-Curie / Blvd. Alfred Nobel (45.48518, -73.76222)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.6801	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Completed November 1998. Functional Class: Collector ICD estimated from Google Maps linework.
(unincorporated), OR Clackamas Co. United States	SE 147th Ave. / Oregon Trail Dr. / Hines Dr. / Sieben Pkwy. (45.42280, -122.51240)	Other Existing	All-Way Stop None	4 Approaches 0 Driveways 34.3688	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Bellevue, WA King Co. United States	W. Lake Sammamish Pkwy. SE / Lakemont Blvd. SE (47.56776, -122.09980)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.4567	Other (At-Grade) Single-Lane	1997	Revised August 2005. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Tallahassee, FL Leon Co. United States	Sutor Road / Old Sutor Road (30.42957, -84.21212)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 16.4770	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Port St. Lucie, FL St. Lucie Co. United States	SE Westmoreland Blvd. / Pine Valley St. (27.25530, -80.30157)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 72.1975	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Fort Pierce, FL St. Lucie Co. United States	Avenue A / N Indian River Dr. (27.44907, -80.32326)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6165	Other (At-Grade) Single-Lane	1997	http://www.walkinginfo.org/pedsafe/casestudy.cfm?CS_NUM=14. Year Completed estimated (1994-1999). ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NW 25th Ave. / NW Overton St. (45.53190, -122.70270)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 44.3420	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NW 25th Ave. / NW Marshall St. (45.53040, -122.70270)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 62.7498	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	Riverside Ave. / W 1720 North (40.25703, -111.66810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.8749	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Cradlerock Way / Homespun Dr. (39.19095, -76.83787)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.2158	Other (At-Grade) Single-Lane	2001	Completed May 21, 2001. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Scottsdale, AZ Maricopa Co. United States	E. Via Linda / E. San Pablo Dr. (33.56833, -111.89350)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 49.7573	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Scottsdale, AZ Maricopa Co. United States	E. Via Linda / N. 87th St. (33.56715, -111.89500)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 69.6612	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Eugene, OR Lane Co. United States	Barger Dr. / Green Hill Rd. (44.08470, -123.20830)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.6002	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	Monterey Way / Harvard Rd. (38.96400, -95.28833)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 15.7869	Other (At-Grade) Single-Lane	1999	Built as part of reconstrction of Monterey Way. Designed as part of City/State Safety Improvement Project. ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	West Campus Rd. / Jayhawk Blvd. / Crescent Rd. (38.95905, -95.25105)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.7185	Other (At-Grade) Single-Lane	2013	Original circle built c. 1945, rebuilt 2013 as part of reconstruction of Jayhawk Boulevard. Encircles Chi Omega fountain. Functional Class: Collector ICD estimated from Google Maps linework.
Coventry, CT Tolland Co. United States	Daly Rd. / South St. (41.76721, -72.33688)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.9424	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Hartland, MI Livingston Co. United States	Hartland Rd. / Rovey Dr. (42.63682, -83.74883)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.6594	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Bayview Rd. / Slidell St. / Burnside Ave. (45.40958, -75.72880)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5384	Other (At-Grade) Single-Lane	2010	Functional Class: Collector ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Anderson Rd. / Alvarado Ave. (38.56210, -121.75850)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2149	Other (At-Grade) Single-Lane	1997	Moderate to high pedestrian and bicycle volume. Located in residential area frequented by commuters to University of California at Davis. ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	12th St. / I St. (40.87160, -124.08700)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 48.7687	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Madison, CT New Haven Co. United States	Rte. 80 / Rte. 79 (41.35976, -72.63807)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 98.6077	Other (At-Grade) Single-Lane		Old traffic circle converted to yield on entry. ICD estimated from Google Maps linework.
Rochester, MI Oakland Co. United States	Tienken Rd. / Runyon Rd. / Washington Rd. (42.69743, -83.11135)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.0105	Other (At-Grade) Single-Lane	1999	Total cost: $353,000. Completed July 1999. Functional Class: Arterial ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	13th St. / J St. (40.87260, -124.08780)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 11.7404	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Scottsdale, AZ Maricopa Co. United States	E. Via Linda / N. 84th St. (33.56832, -111.89880)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 37.8156	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
New London, CT New London Co. United States	Shaw St. / Howard St. / Willets Ave. (41.34284, -72.09972)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.9700	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.