Roundabouts Database Index

28850 Results

Search by location, intersection, and comments with the Quick Search below. You can search all other attributes by clicking Advanced Search. Sort results by clicking the headers of any column. Click the Intersection name for a details and aerial view. Search results pages can be bookmarked. Results can be exported to KML for viewing in Google Earth.

City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Brattleboro, VT Windham Co. United States	Rte 9 / Rte 5 (42.88500, -72.55670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1999	Adjacent to I-89. Heavy truck volume (>7%).
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	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.
Bend, OR Deschutes Co. United States	SW Century Dr. / SW Colorado Ave. / SW Chandler Ave. (44.04180, -121.33200)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Single-Lane	1999	Completed Fall 1999. One leg comes in at 60 degree angle. Right-turn bypass lane part of conceptual design but removed for final. First modern roundabout in Oregon.
Lutherville-Timonium, MD Baltimore Co. United States	MD 139 (Charles St.) / Bellona Ave. (39.41790, -76.62900)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Two-lane circulatory roadway across northern half.
Ellicott City, MD Howard Co. United States	MD 104 (Waterloo Rd.) / MD 100 WB Ramps (39.22470, -76.80600)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	1999
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.
Davis, CA Yolo Co. United States	Shasta Dr. / Olympic Dr. (38.55540, -121.77620)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.2833	Other (At-Grade) Single-Lane	1999	Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	Chopper Cir. / VIP Parking / 9th St. / Access Rd (39.74721, -105.00810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.3424	Other (At-Grade) Single-Lane	1999	Located at Pepsi Center arena Functional Class: Collector ICD estimated from Google Maps linework.
Reno, NV Washoe Co. United States	Wedekind Rd. / Clear Acre Ln. (39.55157, -119.78930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.0222	Other (At-Grade) Single-Lane	1999	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Superior, CO Boulder Co. United States	5th Ave. / Center Dr. (39.95764, -105.17190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.1262	Other (At-Grade) Single-Lane	1999	Serves Costco and Target as part of 750,000 square foot shopping center. Functional Class: Local ICD estimated from Google Maps linework.
Eugene, OR Lane Co. United States	N. Terry St. / Roosevelt Blvd. (44.06371, -123.18825)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 20.5969	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Lakewood, CO Jefferson Co. United States	Allison Pkwy. / Civic Center (39.70906, -105.08630)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 31.2390	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	E 5th St. / Fairview Dr. (39.16090, -119.72790)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	1999
Northglenn, CO Adams Co. United States	Melody Dr. / Kennedy Dr. (39.89222, -104.99270)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.6541	Other (At-Grade) Single-Lane	1999	Roundabout is single-lane except for NB approach with separate RT 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.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Ida Ave. (39.61082, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 14.7216	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Powers Ave. (39.61501, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 9.2005	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Prentice Pl. (39.61977, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 14.7197	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Bloomington, IN Monroe Co. United States	High St. / Winslow Rd. / Rogers Rd. (39.13631, -86.50819)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.9078	Other (At-Grade) Single-Lane	1999	$497,000 construction cost. 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.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Wheel Rd. (39.48999, -76.32914)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5729	Other (At-Grade) Single-Lane	1999	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Moore Blvd. / Rockwell Dr. (38.56830, -121.72630)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.2127	Other (At-Grade) Single-Lane	1999	Date estimated. Functional Class: Local ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Moore Blvd. / Wright Blvd. (38.56490, -121.71860)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.2801	Other (At-Grade) Single-Lane	1999	Date estimated. Functional Class: Local ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	MD 7 / Holly Oaks Drive (39.48848, -76.21669)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.1039	Other (At-Grade) Single-Lane	1999	Opened September 1999. ICD estimated from Google Maps linework.
Millington, MD Kent Co. United States	MD 291 / US 301 SB Ramps (39.26463, -75.86641)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4393	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Millington, MD Kent Co. United States	MD 291 / US 301 NB Ramps (39.26386, -75.86260)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6656	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Castle Marina, MD Queen Annes Co. United States	MD 18 / Castle Marina Rd. (38.97871, -76.28938)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.7819	Other (At-Grade) Single-Lane	1999	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Howard, WI Brown Co. United States	Lineville Rd. (CTH M) / Cardinal Ln. (CTH EB) (44.59090, -88.08430)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.7684	Other (At-Grade) Single-Lane	1999	Roundabout is near Forest Glen Elementary School, Lineville Intermediate School, and Bay Port High School. Completed October 1999. http://www.co.brown.wi.us/Planning/roundabouts.html Functional Class: Arterial ICD estimated from Google Maps linework.
Howard, WI Brown Co. United States	Lineville Rd. (CTH M) / Rockwell Ln. (44.59080, -88.08880)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.0674	Other (At-Grade) Single-Lane	1999	Roundabout is adjacent to Lineville Intermediate School, Middle School, and High School. School did not allow pedestrian crossings prior to roundabout due to unsafe conditions, now allows crossings using crossing guard. Completed October 1999. http://www.co.brown.wi.us/Planning/roundabouts.html Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Main St. / 200 N St. / Diagonal St. (37.11152, -113.58350)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 30.4778	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Orlando, FL Orange Co. United States	N. Westmoreland Dr. / N. Lake Adair Blvd. (28.56104, -81.39342)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 17.8328	Other (At-Grade) Single-Lane	1999	Old circle, judging by condition of brick pavement; additional yield signs w/ minimum fine; official bike route; drainage constraints Functional Class: Collector? ICD estimated from Google Maps linework.
Petaluma, CA Sonoma Co. United States	Casa Grande Rd. / Ely Blvd. (38.24348, -122.59580)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.8924	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Linton Hall, VA Prince William Co. United States	Braemar Pkwy. (VA 3080) / Iona Sound Dr. (VA 3089) (38.73510, -77.56889)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 46.5816	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-2002). ICD estimated from Google Maps linework.
Honolulu, HI Oahu Co. United States	Keeaumoku St. / Heulu St. (21.30592, -157.83500)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 17.8032	Other (At-Grade) Single-Lane	1999	Urban. ICD estimated from Google Maps linework.
Stillwater, MN Washington Co. United States	Rutherford Rd. / 72nd St. / New England Pl. (School House Circle) (45.05673, -92.85909)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 55.6830	Other (At-Grade) Single-Lane	1999	Functional Class: Local ICD estimated from Google Maps linework.
New Castle, CO Garfield Co. United States	Castle Valley Blvd. / Pyramid St. (39.57959, -107.52880)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 33.1386	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
New Castle, CO Garfield Co. United States	Castle Valley Blvd. / (TBD) (39.57517, -107.52190)	Roundabout Existing	Unknown Unknown	2 Approaches 0 Driveways 31.2996	Other (At-Grade) Single-Lane	1999	Facilitates U-turns. ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	5000 North / Edgewood Dr. (40.30066, -111.65750)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 19.1282	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Barnstable, MA Barnstable Co. United States	Rte 149 / Race Ln. (41.68164, -70.40159)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8676	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Lexington, KY Fayette Co. United States	W Reynolds Rd. / Keithshire Way / Wellington Way (37.99520, -84.53814)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.1196	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Opened between 1997 and 2002. Functional Class: Collector ICD estimated from Google Maps linework.
Jensen Beach, FL Martin Co. United States	SR 707 / Pineapple Dr. / Jensen Beach Causeway (27.25074, -80.22818)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.7914	Other (At-Grade) Single-Lane	1999	RT only lanes entering roundabout on two approaches. ICD estimated from Google Maps linework.
(unincorporated), FL Seminole Co. United States	Alaqua Lakes Blvd. / Lakeview Oaks Dr. / Ashton Oaks Cove (28.75415, -81.39022)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 58.6353	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
(unincorporated), FL Seminole Co. United States	Alqua Blvd. / Fernlake Pl. (28.76020, -81.39994)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 60.7259	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Alpharetta, GA Fulton Co. United States	Rainwater Dr. / (unknown) (34.06288, -84.28911)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.7564	Other (At-Grade) Single-Lane	1999	Functional Class: Local ICD estimated from Google Maps linework.
San Diego, CA San Diego Co. United States	49th St. / Adams Ave. / Euclid Ave. / Loraine Dr. (32.76279, -117.08910)	Traffic Calming Circle Existing	All-Way Yield None	5 Approaches 0 Driveways 35.1516	Other (At-Grade) Single-Lane	1999	Functional Class: Local ICD estimated from Google Maps linework.
Cincinnati, OH Hamilton Co. United States	Fulton Ave / Eden Park Drive (39.11472, -84.49347)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2865	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Maryland Heights, MO St. Louis Co. United States	Casino Center Dr. / (casino parking) (38.75175, -90.47969)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 39.1195	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Yield on circulatory roadway. Year Completed estimated (1996-2002) ICD estimated from Google Maps linework.
Elgin, SC Richland Co. United States	Jacobs Millpond Rd. / Woodcreek Farms Rd. (34.12103, -80.83451)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.7295	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Norman, OK Cleveland Co. United States	Manor Hill Dr. / Sherburne Rd. (35.22406, -97.50950)	Roundabout Existing	All-Way Yield None	3 Approaches 5 Driveways 36.0991	Other (At-Grade) Single-Lane	1999	No truck apron. Year Completed estimated (1995-2003). ICD estimated from Google Maps linework.
Newberg, OR Yamhill Co. United States	Foothills Dr. / Center St. (45.32467, -122.96999)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 26.8710	Other (At-Grade) Single-Lane	1999	Very small splitter islands, with pedestrian crossings next to circulatory roadway. ICD estimated from Google Maps linework.
Yuma, AZ Yuma Co. United States	S Main St. / E 3rd St. (32.72258, -114.61788)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 15.0718	Other (At-Grade) Single-Lane	1999	Painted splitter islands on Main St. Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	Northridge Dr. / Tablerock Dr. (39.18460, -119.75685)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-1999).
Draper, UT Salt Lake Co. United States	Mike Weir Dr. / Sage Hollow Dr. / S Rambling Rd. (40.49752, -111.84179)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 60.8499	Other (At-Grade) Single-Lane	1999	Partially painted splitter islands on two legs; no splitter islands on third leg. ICD estimated from Google Maps linework.
Camp Springs, MD Prince George's Co. United States	Capital Gateway Dr. / Auth Rd. / Old Soper Rd. (38.82403, -76.91189)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Unstriped circulatory roadway. Year Completed estimated (1995-2001).
Madison, WI Dane Co. United States	Dayflower Dr. / Starr Grass Dr. (43.03834, -89.51671)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	1999	Year Completed estimated (before 2000).
West Bend, WI Washington Co. United States	Poplar St. / 6th Ave. (43.42078, -88.18365)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 22.8600	Other (At-Grade) Single-Lane	1999	No splitter islands.
Allen, TX Collin Co. United States	Allen High School entrance / (parking) (33.11043, -96.66008)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 67.0550	Other (At-Grade) Single-Lane	1999	Pedestrian access to central island; parking along circulatory roadway. Elliptical shaped. Located on the Allen High School Campus. ICD = 230 ft x 175 ft.
McKinney, TX Collin Co. United States	Riverbrook Dr. / Silverlake Rd. / Waterfall Dr. (33.18958, -96.71624)	Other Existing	Other None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	1999	No splitter islands. Two minor approached controlled with Stop Signs.
Saint Lucie West, FL St. Lucie Co. United States	Champions Way / (unknown) (27.30724, -80.42218)	Other Existing	Uncontrolled None	3 Approaches 0 Driveways 31.0896	Other (At-Grade) Single-Lane	1999
Boardman, MI Grand Traverse Co. United States	Webster St. / Franklin St. (44.76060, -85.61118)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1999	https://www.record-eagle.com/archives/two-traffic-circles-going-in-this-fall/article_f3f9d4b6-9a9a-5faa-8100-8de9872bbcad.html
Boardman, MI Grand Traverse Co. United States	Webster St. / Wellington St. (44.76059, -85.61351)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1999	https://www.record-eagle.com/archives/two-traffic-circles-going-in-this-fall/article_f3f9d4b6-9a9a-5faa-8100-8de9872bbcad.html
Germantown, MD Montgomery Co. United States	Germantown Rd. / Watkins Mill Rd. / Blunt Rd. (39.19058, -77.22492)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	1999	Right-turn bypass lane on north leg. Year Completed estimated (1993-2005).
Buck Lake, FL Leon Co. United States	Pedrick Rd. / Easton Glen Dr. / Countryside Dr. (30.45227, -84.18178)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.8600	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-1999).
Spring Hill, FL Hernando Co. United States	Wexford Blvd. / Billingham Blvd. (28.44547, -82.53505)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 73.1520	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1995-1998).
Chesapeake, VA Chesapeake City United States	Warrington Blvd. / Great Marsh Ave. (36.74283, -76.21173)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1998	Unstriped circulatory roadway. Year Completed estimated (1994-2002).
Ellicott City, MD Howard Co. United States	Lancelot Cross / Butterfruit Way / Argent Path / Stardust Ln. (39.28522, -76.90384)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002).
Braden River, FL Manatee Co. United States	Glen Eagles Crossing / Warwick Gardens Ln. / Marlow Pl. / Heathfield Ct. (27.39999, -82.46689)	Other Existing	Unknown None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Single-Lane	1998	Pedestrian crossing within circulatory roadway.
Bradenton, FL Manatee Co. United States	96th St. E / 51st Terrace E (27.44937, -82.44575)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	1998	No splitter islands on east and west legs. Large undefined areas on north and south legs.
Marriottsville, MD Howard Co. United States	Sand Hill Rd. / Sand Hill Manor Dr. / Mount View Rd. (39.31018, -76.93043)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002).
Prince Frederick, MD Calvert Co. United States	Prince Frederick Blvd. / Chapline Place Blvd. (38.55239, -76.59551)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2003). Initially constructed as two-lane roundabout with concentric striped circulatory roadway. Converted to single-lane roundabout 2007-2009.
Gaithersburg, MD Montgomery Co. United States	Washingtonian Blvd. / Rio Blvd. (39.11678, -77.20122)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1993-2002).
Gaithersburg, MD Montgomery Co. United States	Washingtonian Blvd. / Washington Blvd. (39.11773, -77.20314)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1993-2002).
Severna Park, MD Anne Arundel Co. United States	East West Blvd. / Jumpers Hole Rd. / Adler Ct. (39.10765, -76.58306)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 65.5320	Other (At-Grade) Single-Lane	1998	Elliptical shape. ICD 225 ft x 200 ft. Year Completed estimated (1994-2002).
Aurora, ON York Canada	Hollandview Trl. / Woodruff Crescent / Hollidge Blvd. (44.01096, -79.45395)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1996-2002).
Aurora, ON York Canada	Hollidge Blvd. / John West Way (44.01147, -79.45102)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1996-2002).
West Jordan, UT Salt Lake Co. United States	S Cobble Ridge Dr. / W Castle Pines Way (40.62410, -111.98247)	Other Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 26.2883	Other (At-Grade) Single-Lane	1998	No splitter islands; unmarked pedestrian crossings through circulatory roadway. ICD estimated from Google Maps linework.
Houston, TX Harris Co. United States	Westwood Dr. / Huge Oaks St. (29.79887, -95.49113)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	1998	Implemented as part of a larger neighborhood street reconstruction project that incorporated systematic traffic calming elements.
Houston, TX Harris Co. United States	Westwood Dr. / Pine Chase Dr. (29.79887, -95.48897)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	1998	Implemented as part of a larger neighborhood street reconstruction project that incorporated systematic traffic calming elements.
Mount Pleasant, SC Charleston Co. United States	Park West Blvd. / Professional Ln. / (parking) (32.87348, -79.77707)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4360	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1995-1999).
Hamilton, ON Hamilton Canada	Stonehenge Dr. / Thoroughbred Blvd. (43.21655, -79.95150)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (before 2004).
Fairview, CA Alameda Co. United States	Fairview Ave. / Five Canyons Pkwy. / East Ave. (Star Ridge Rd.) (37.67520, -122.03220)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 20.7965	Other (At-Grade) Single-Lane	1998	https://www.sfgate.com/bayarea/article/COMMUTER-CHRONICLES-IN-A-ROUNDABOUT-WAY-The-2975842.php ICD estimated from Google Maps linework.
Lakeport, CA Lake Co. United States	Todd Rd. / Parallel Dr. (39.03226, -122.92521)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.5433	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2003). ICD estimated from Google Maps linework.
Woodbridge, VA Prince William Co. United States	Greatbridge Rd. / Mays Quarter Rd. (38.68304, -77.34802)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.7509	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-2002). ICD estimated from Google Maps linework.
Parker, CO Douglas Co. United States	Clubhouse Dr. / S Pikes Peak Dr. (39.51305, -104.76302)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5634	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-1999). ICD estimated from Google Maps linework.
Vaughan, ON York Canada	S Park Rd. / S Park Rd. (43.83875, -79.39747)	Other Existing	Unknown None	2 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (before 2002)
Mount Pleasant, SC Charleston Co. United States	Mathis Ferry Rd. / Shelmore Blvd. (32.81177, -79.87913)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.1021	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
(unincorporated), GA Gwinnett Co. United States	Meadow Park Dr. / Meadow Park Ln. / Meadow Bluff Ln. / Dovecote Trl. (34.06361, -84.10306)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 75.1945	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
(unincorporated), FL Brevard Co. United States	Weatherwood Dr. / Adelaide Dr. / Woodhall Cir. (28.28324, -80.72941)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.0698	Other (At-Grade) Single-Lane	1998	Painted splitter islands. ICD estimated from Google Maps linework.
Boca Raton, FL Palm Beach Co. United States	SE 5th Ave. / SE 3rd St. (26.34535, -80.07758)	Other Existing	Other Unknown	3 Approaches 0 Driveways 28.8976	Other (At-Grade) Single-Lane	1998	Previously controlled by circle ICD estimated from Google Maps linework.
Tallahassee, FL Leon Co. United States	Heritage Park / Piney Z Plantation Rd. (30.43901, -84.19810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0102	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Tallahassee, FL Leon Co. United States	Kerry Forest Pkwy. / Shannon Lakes Dr. (30.53631, -84.21499)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 23.6597	Other (At-Grade) Single-Lane	1998	Right turn bypass lane with acceleration lane. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Jacksonville, FL Duval Co. United States	Southside Blvd. SB Ramp / Southside Blvd. Service Rd. / Como Lake Dr. (30.21216, -81.55235)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 34.0593	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Windsor Mill, MD Baltimore Co. United States	Lord Baltimore Dr. / Wildlife Dr. (39.31993, -76.75019)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 14.7833	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Windsor Mill, MD Baltimore Co. United States	Lord Baltimore Dr. / Glen Spring Rd. / Kettle Ct. (39.31750, -76.75152)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 17.5558	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Liberty Township, OH Butler Co. United States	Hughes Woods Ln. / Hughes Ridge Ln. (39.39099, -84.40464)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 43.3818	Other (At-Grade) Single-Lane	1998	No splitter islands. ICD estimated from Google Maps linework.
Springboro, OH Warren Co. United States	Settlers Walk Blvd. / Remick Blvd. / Stolle Dr. (39.57782, -84.21781)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 64.4378	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Goshawk St. / Tanager St. (39.97816, -104.74840)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.7104	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.