Roundabouts Database

16889 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
Lamesley, England
Gateshead
United Kingdom 		Kingsway South / Chowdene Bank / Lamesley Rd. / Banesley Ln. / A1 Ramps
(54.92113, -1.61230) 		Signalized Roundabout/Circle
Existing 		Other
None 		6 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane) 		Combination of yield control and parttime signaling of entry-circulating points.
Darlington, England
Darlington
United Kingdom 		B6279 / Haughton Rd. / Barton St.
(54.53219, -1.53814) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane) 		Hamburger shaped.
Redhills, England
Cumbria
United Kingdom 		Skirsgill Interchange [A66 / Ullswater Rd. / M6 Ramps]
(54.65328, -2.76003) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (3+ Lane)
Edinburgh, Scotland
Edinburgh City
United Kingdom 		Gogar Roundabout [A720 (The City Of Edinburgh Bypass) / South Gyle Broadway / Myreton Dr. / A8 (Glasgow Rd.) Ramps]
(55.93946, -3.32250) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (3+ Lane)
Edinburgh, Scotland
Edinburgh City
United Kingdom 		A71 (Calder Rd.) / A720 (The City Of Edinburgh Bypass) Ramps
(55.91954, -3.30423) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (3+ Lane)
Edinburgh, Scotland
Edinburgh City
United Kingdom 		Bankhead Roundabout [A71 (Calder Rd.) / B701 (Wester Hailes Rd.) / Bankhead Ave.]
(55.92228, -3.29137) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane) 		Eastbound Calder Rd at the roundabout has signal - other approaches do not.
Ratho Station, Scotland
Edinburgh City
United Kingdom 		Newbridge Roundabout [A89 / A8 (Glasgow Rd.) / Old Liston Rd. / M9 Ramps]
(55.93921, -3.40195) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (3+ Lane)
East Herrington, England
Sunderland
United Kingdom 		A690 (Durham Rd.) / City Way / A19 Ramps
(54.86486, -1.44627) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (3+ Lane)
Seaton Burn, England
North Tyneside
United Kingdom 		Seaton Burn Roundabout [A19 / A1068 (Fisher Ln.) / Great North Rd. / Front St.]
(55.06512, -1.63277) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Tinsley, England
Sheffield
United Kingdom 		A6178 (Sheffield Rd.) / Vulcan Rd.
(53.41085, -1.40648) 		Signalized Roundabout/Circle
Existing 		Signal
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane)
Rotherham, England
Rotherham
United Kingdom 		Mushroom Roundabout [A630 (Fitzwilliam Rd. - Doncaster Rd.) / A6123 (Herringthorpe Valley Rd. - Aldwarke Ln.)]
(53.44223, -1.32200) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Doncaster, England
Doncaster
United Kingdom 		A630 (Church Way) / Athron St.
(53.52854, -1.12789) 		Signalized Roundabout/Circle
Existing 		Signal
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane) 		One entry-circulating junction signalized; the rest are yield entry.
Doncaster, England
Doncaster
United Kingdom 		Markets Roundabout [A630 (Church Way) / A19 (New Bridge Rd.) / Grey Friars' Rd. / Chappell Dr.]
(53.52689, -1.13324) 		Signalized Roundabout/Circle
Existing 		Signal
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane) 		Exits to Grey Friars' Rd and Chappell Dr.
Saltash, England
Cornwall
United Kingdom 		Carkeel Roundabout [A38 / A388 / B3271 (Callington Rd.)]
(50.41899, -4.23431) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Egg Buckland, England
Plymouth
United Kingdom 		A374 / Delamere Rd. / Forder Valley Rd. / Longbridge Rd. / A38 (The Parkway) Ramps
(50.39590, -4.09740) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane)
Plymouth, England
Plymouth
United Kingdom 		Derriford Roundabout [A386 (Tavistock Rd.) / Looseleigh Ln. / Derriford Rd. / Brest Rd.]
(50.41753, -4.12198) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Great Yarmouth, England
Norfolk
United Kingdom 		A47 / A12 (Pasteur Rd.) / Gapton Hall Rd.
(52.59879, 1.71340) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane) 		Partially controlled by signals.
Hobart, TAS
Hobart
Australia 		Railway Roundabout [National Highway 1 / A6 (Brooker Ave . - Liverpool St.)]
(-42.87807, 147.33100) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Newcastle upon Tyne, England
North Tyneside
United Kingdom 		A188 (Benton Ln.) / Balliol Business Park
(55.01990, -1.58476) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane)
West Moor, England
North Tyneside
United Kingdom 		A189 / Great Lime Rd. / White House Dr.
(55.03221, -1.59073) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane) 		Oval shaped.
Newcastle upon Tyne, England
Newcastle-upon-Tyne
United Kingdom 		N Brunton Interchange [A1056 (Great Parkway - Rotary Way) / B1318 (Great North Rd.) / A1 Ramps
(55.03473, -1.62841) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (3+ Lane)
Jesmond, NSW
Newcastle
Australia 		A15 (Newcastle Rd.) / A37 (Newcastle Inner City Bypass)
(-32.90615, 151.69250) 		Signalized Roundabout/Circle
Existing 		Signal
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane) 		Elliptical shaped.
Vaucresson, Île-de-France
Hauts-de-Seine
France 		Boulevard de Jardy / route Napolean III / E5 Ramps
(48.83261, 2.15313) 		Signalized Roundabout/Circle
Existing 		Signal
Unknown 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane) 		Part of diverging diamond interchange (DDI).
Dunfermline, Scotland
Fife
United Kingdom 		A907 (Appin Crescent - Carnegie Dr.) / A823 (Saint Margarets Dr.) / Holyrood Pl. / East Port
(56.07285, -3.45264) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Leeds, England
Leeds
United Kingdom 		A6120 (Ring Road Seacroft - Station Rd.) / Cross Gates Rd. / Cross Gates Ln.
(53.80830, -1.45279) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane) 		Three approaches are not signalised.
Boston Spa, England
Leeds
United Kingdom 		Grange Moor Roundabout [A659 (Wattle Syke - Moor End) / A1(M) Ramps]
(53.90620, -1.37749) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane) 		Only one approach is signalised.
Wolviston, England
Stockton-on-Tees
United Kingdom 		A689 (Stockton Rd.) / A1185 / Wolviston Rd. / A19 SB Off-Ramp
(54.62691, -1.29597) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane)
Paso Carrasco, Canelones
Paso Carrasco
Uruguay 		Ruta Nacional 101 (Avenida de Las Américas) / Calle 106 (Avenida Wilson Ferreira de Aldunate) / Camino Aeropuerto Montevideo
(-34.84584, -56.02414) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane)
East Kilbride, Scotland
South Lanarkshire
United Kingdom 		A749 (Kingsway) / A725 (E Kilbride Expressway) / (Law Pl. connector)
(55.78031, -4.16409) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane)
East Kilbride, Scotland
South Lanarkshire
United Kingdom 		A749 / Stewartfield Way / (Kingsgate Retail Park entrance)
(55.78233, -4.16570) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane)
Gorleston-on-Sea, England
Norfolk
United Kingdom 		A47 (Lowestoft Rd.) / B1534 (Beaufort Way) / Links Rd.
(52.55646, 1.71731) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
East Bunbury, WA
Bunbury
Australia 		Eelup Rotary [Australind Bypass / Sandridge Rd. / Koombana Dr. / Robertson Dr.]
(-33.33619, 115.66705) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Carnide, Lisbon
Lisboa
Portugal 		Avenida Mário Soares / Estrada da Correia / Estrada Militar
(38.76088, -9.19743) 		Signalized Roundabout/Circle
Existing 		Signal
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Gainesville, FL
Alachua Co.
United States 		SE 7th St. / SE 4th Ave.
(29.64824, -82.31792) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
18.2880 		Other (At-Grade)
Single-Lane 		1992 Pedestrian crossings within circulatory roadway. Completed April 1992.
Naples, FL
Collier Co.
United States 		7th St. N. / 3rd Ave. N.
(26.15530, -81.80524) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
9.6483 		Other (At-Grade)
Single-Lane 		1998 Installed for traffic calming. Detailed traffic volume, speed data available. ICD estimated from Google Maps linework.
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.
Naples, FL
Collier Co.
United States 		7th St. N. / 11th Ave. N.
(26.15712, -81.79420) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
13.7160 		Other (At-Grade)
Single-Lane 		1996 Installed for traffic calming. Painted splitter islands. Detailed traffic volume, speed data available. ICD estimated from Google Earth.
Naples, FL
Collier Co.
United States 		7th St. N. / 12th Ave. N.
(26.15734, -81.79282) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
13.7160 		Other (At-Grade)
Single-Lane 		1996 Installed for traffic calming. Detailed traffic volume, speed data available. ICD estimated from Google Earth.
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.
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.
Portland, OR
Multnomah Co.
United States 		NW 25th Ave. / NW Quimby St.
(45.53328, -122.70277) 		Traffic Calming Circle
Existing 		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.
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.
Portland, OR
Multnomah Co.
United States 		NW 25th Ave. / NW Overton St.
(45.53190, -122.70270) 		Traffic Calming Circle
Existing 		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 		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.
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.
Scottsdale, AZ
Maricopa Co.
United States 		E. Via Linda / E. San Rafael Dr.
(33.56711, -111.89565) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
18.2880 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Earth.
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.
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.
Scottsdale, AZ
Maricopa Co.
United States 		E. Via Linda / N. 83rd Pl.
(33.56770, -111.90100) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
63.6899 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		61st Ave. S / S Norfolk St.
(47.51337, -122.25705) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2006
Seattle, WA
King Co.
United States 		34th Ave. SW / SW Henderson St.
(47.52286, -122.37530) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
42.7458 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Litchfield Park, AZ
Maricopa Co.
United States 		W. Palmilla Blvd. / W. Alvarado Dr.
(33.46978, -112.35190) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
23.9107 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Litchfield Park, AZ
Maricopa Co.
United States 		Wigwam Creek Blvd. / N. Rattler Way
(33.51643, -112.32870) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
16.9277 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Paradise Valley, AZ
Maricopa Co.
United States 		Indian Bend Rd. / 70th St.
(33.53864, -111.92930) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
47.7835 		Other (At-Grade)
Single-Lane 		Mini-roundabout ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Linden Ave. N / N. 42nd St.
(47.65774, -122.34850) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
56.3115 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		44th Ave. SW / SW College St.
(47.58301, -122.38780) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
37.0576 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		30th Ave. SW / SW Cloverdale St.
(47.52648, -122.37120) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
64.5176 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		42nd Ave. SW / SW Hinds St.
(47.57318, -122.38570) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
9.6690 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		61st Ave. S / S. Cooper St.
(47.51166, -122.25710) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
 Other (At-Grade)
Unknown 		2006
Seattle, WA
King Co.
United States 		17th Ave. E. / E. Spring St.
(47.61153, -122.31020) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
5.6361 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		40th Ave. SW / SW Manning St.
(47.57122, -122.38250) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
7.2520 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		28th Ave. NE / NE Hiram Pl. / NE 120th St.
(47.71572, -122.29810) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
164.7289 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		24th Ave. S / S. Dearborn St.
(47.59557, -122.30120) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
13.6919 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Phoenix, AZ
Maricopa Co.
United States 		E. Mountain View Rd. / N. Central Ave.
(33.57510, -112.07360) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		0 Approaches
0 Driveways
16.9162 		Other (At-Grade)
Single-Lane 		2006 Mini-roundabout ICD estimated from Google Maps linework.
Phoenix, AZ
Maricopa Co.
United States 		N. 43rd St. / E. Stanford Dr.
(33.51700, -111.98930) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		0 Approaches
0 Driveways
46.7997 		Other (At-Grade)
Single-Lane 		2005 Mini-roundabout ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		25th Ave. S / S. Dearborn St.
(47.59556, -122.30010) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
 Other (At-Grade)
Unknown 		2006
Seattle, WA
King Co.
United States 		26th Ave. S / S. Dearborn St.
(47.59555, -122.29880) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
48.3244 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		26th Ave. S / S. Judkins St.
(47.59209, -122.29900) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
20.9420 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		24th Ave. S / S. Norman St.
(47.59301, -122.30120) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
41.0778 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Phoenix, AZ
Maricopa Co.
United States 		South 20th Drive. / (none)
(33.37556, -112.10290) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
16.9552 		Other (At-Grade)
Single-Lane 		2003 Neighborhood traffic calming. ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		29th Ave. S / S. Judkins St.
(47.59217, -122.29550) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
12.8873 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		31st Ave. E / E. Denny St.
(47.62016, -122.29230) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
64.4023 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Scottsdale, AZ
Maricopa Co.
United States 		N. 70th Pl. / E. Chaparral Rd.
(33.50954, -111.92900) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
23.8998 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Densmore Ave. N / N 137th St.
(47.72867, -122.33830) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
16.8705 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		2nd Ave. NE / NE 91st St.
(47.69499, -122.32710) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
8.0388 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Linden Ave. N / N. 36th St.
(47.65116, -122.34860) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
35.4002 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Woodlawn Ave. N / N. 36th St.
(47.65051, -122.33870) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
12.8730 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		18th Ave. E. / E. Spring St.
(47.61154, -122.30890) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
8.0516 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		4th Ave. N / N. Prospect St.
(47.62890, -122.34880) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
10.4636 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Scottsdale, AZ
Maricopa Co.
United States 		N. 74th St. / E. Sweetwater Ave.
(33.60395, -111.92155) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		0 Approaches
0 Driveways
16.7640 		Other (At-Grade)
Unknown 		2003 Modified by City in 2005 to improve operation as roundabout. 21442
Seattle, WA
King Co.
United States 		Sunnyside Ave. N / N. 43rd St.
(47.65912, -122.33020) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
 Other (At-Grade)
Unknown 		2006
London, ON
Middlesex County
Canada 		Lambton Dr. / Oxford Dr.
(43.00616, -81.27515) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
38.4291 		Other (At-Grade)
Single-Lane 		Constructed sometime in the 1970s. Functional Class: Local ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		21st Ave. E / E. Republican St.
(47.62320, -122.30470) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
5.6349 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Willimantic, CT
Windham Co.
United States 		Eastern Rd. / (driveway) (ECSU Campus by clock tower)
(41.72001, -72.21691) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.0693 		Other (At-Grade)
Single-Lane 		1999 Not properly signed and painted, but lots of potential for demonstrating this intersection concept. ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Arapahoe Ave. / 4th St.
(40.01294, -105.29160) 		Traffic Calming Circle
Existing 		Two-Way Stop
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Boulder, CO
Boulder Co.
United States 		Arapahoe Ave. / 5th St.
(40.01295, -105.28920) 		Traffic Calming Circle
Existing 		Two-Way Stop
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Boulder, CO
Boulder Co.
United States 		Balsam Ave. / 14th St.
(40.02675, -105.27840) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
16.4619 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Balsam Ave. / 15th St.
(40.02675, -105.27660) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
8.2310 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Evergreen Ave. / 9th St.
(40.03106, -105.28560) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
16.4609 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Maxwell Ave. / 6th St.
(40.02176, -105.28860) 		Traffic Calming Circle
Existing 		Two-Way Stop
None 		4 Approaches
0 Driveways
12.8046 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pearl St. / 4th St.
(40.01571, -105.29050) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
20.1234 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pearl St. / Mid-Block
(40.01501, -105.29390) 		Traffic Calming Circle
Existing 		Unknown
None 		2 Approaches
0 Driveways
16.4647 		Other (At-Grade)
Single-Lane 		Facilitates U-turns at west end of Pearl Street ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pine St. / 15th St.
(40.02072, -105.27670) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
16.4634 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pine St. / 17th St.
(40.02126, -105.27410) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
10.9755 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Littleton, CO
Arapahoe Co.
United States 		Franklin St. / Cherryville Rd.
(39.61832, -104.96920) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
8.2800 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Greenwood Village, CO
Arapahoe Co.
United States 		S. Monaco St. / E. Berry Ave.
(39.61682, -104.91340) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
11.9603 		Other (At-Grade)
Single-Lane 		1999 ICD estimated from Google Maps linework.
Greenwood Village, CO
Arapahoe Co.
United States 		S. Monaco St. / E. Dorado Ave.
(39.61319, -104.91350) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
9.2007 		Other (At-Grade)
Single-Lane 		1999 ICD estimated from Google Maps linework.
Greenwood Village, CO
Arapahoe Co.
United States 		S. Monaco St. / E. Dorado Pl.
(39.61199, -104.91350) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
11.0410 		Other (At-Grade)
Single-Lane 		1999 ICD estimated from Google Maps linework.