Roundabouts Database Index

29616 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
Vancouver, BC Greater Vancouver Canada	Heather St. / W 60th Ave. (49.21605, -123.12393)	Traffic Calming Circle Existing	Other Unknown	4 Approaches 0 Driveways 14.0426	Other (At-Grade) Single-Lane	2008	No yield or stop signs. ICD estimated from Google Maps linework.
Vancouver, BC Greater Vancouver Canada	Heather St. / 62nd Ave. (49.21424, -123.12399)	Traffic Calming Circle Existing	Other Unknown	3 Approaches 0 Driveways 10.9224	Other (At-Grade) Single-Lane	2008	No yield or stop signs. ICD estimated from Google Maps linework.
Sequim, WA Clallam Co. United States	W Washington St. / S 9th Ave. (48.07909, -123.12400)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2007	May 2007.
Vancouver, BC Greater Vancouver Canada	Heather St. / W 64th Ave. (49.21235, -123.12407)	Traffic Calming Circle Existing	Other Unknown	3 Approaches 0 Driveways 10.9229	Other (At-Grade) Single-Lane	2008	No yield or stop signs. ICD estimated from Google Maps linework.
Vancouver, BC Greater Vancouver Canada	Heather St. / W 68th Ave. (49.21027, -123.12414)	Traffic Calming Circle Existing	Other Unknown	4 Approaches 0 Driveways 10.9233	Other (At-Grade) Single-Lane	2008	No yield or stop signs. ICD estimated from Google Maps linework.
West Vancouver, BC Greater Vancouver Canada	Taylor Way / Southborough Dr. / Stevens Dr. (49.34101, -123.13479)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2005	Yield-controlled right-turn bypass lane on south leg.
Sequim, WA Clallam Co. United States	W Washington St. / River Rd. (48.07758, -123.13480)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 31.9184	Other (At-Grade) Single-Lane	2004	Opened June 2004. Northbound right turn bypass lane. ICD estimated from Google Maps linework.
Vancouver, BC Greater Vancouver Regional District Canada	Stanley Park Dr. / Pipeline Rd. / Park Entrance (49.29745, -123.13610)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.7024	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Albany, OR Benton Co. United States	NW Squire St. / Flame Tree Ln. NW / NW Beehollow Ln. (44.66551, -123.13765)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 18.6875	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2006-2010). ICD estimated from Google Maps linework.
Albany, OR Benton Co. United States	Flame Tree Dr. NW / NW 24th Ave. / NW Laura Vista Dr. (44.66454, -123.13891)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 24.6340	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2006-2010). ICD estimated from Google Maps linework.
West Vancouver, BC Greater Vancouver Canada	Cross Creek Rd. / Chartwell Dr. (49.34530, -123.14714)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2013).
Squamish, BC Squamish-Lillooet District Canada	Commercial Way / Discovery Way (49.72279, -123.15057)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Home Depot retail center on one corner. Uses fishhook signs and pavement markings. Year Completed estimated (2004-2009).
Oakville, WA Grays Harbor United States	US 12 / Anderson Rd. SW (46.82715, -123.16058)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	http://www.chronline.com/news/construction-of-roundabout-on-u-s-12-near-oakville-finished/article_d77f70d2-f15a-11ea-b909-f339b3dd626d.html
Richmond, BC Greater Vancouver Canada	Bayview St. / Easthope Ave. (49.12328, -123.17882)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 21.8850	Other (At-Grade) Single-Lane		No splitter islands. ICD estimated from Google Maps linework.
Independence, OR Polk Co. United States	C St. / (unknown) (44.85197, -123.18311)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	No splitter islands on two legs. Right-turn-only pavement marking arrows on each entry.
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.
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.
McMinnville, OR Yamhill Co. United States	Forest Glen Dr. / Tera Dr. / Courtney Laine Dr. (45.20442, -123.21089)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6110	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
McMinnville, OR Yamhill Co. United States	NW Hill Rd. / NW Baker Creek Rd. (45.22708, -123.22767)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.4877	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
McMinnville, OR Yamhill Co. United States	NW Hill Rd. / NW Wallace Rd. (45.21798, -123.22773)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.6042	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2019). ICD estimated from Google Maps linework.
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.
Vancouver, BC Greater Vancouver Canada	East Mall / W 16th Ave. (49.25415, -123.24113)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 46.7726	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	ICD estimated from Google Maps linework.
Horseshoe Bay, BC Greater Vancouver Canada	Marine Dr. / Keith Rd. (49.36984, -123.27623)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.8869	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
West Vancouver, BC Greater Vancouver Regional District Canada	Marine Dr. / Nelson Ave. / Rosebery Ave. (49.37024, -123.27980)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	2004	http://www.westvancouver.ca/upload/documents/Tidings/WV_Tidings_Feb08_2004.pdf.
Oak Bay, BC Capital Canada	Midland Circle: Midland Rd. / Upper Terrace Rd. / Ripon Rd. (48.44717, -123.30175)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 63.0000	Other (At-Grade) Single-Lane		Previous streetcar turnaround.
Victoria, BC Capital Canada	Finnerty Rd. / McKenzie Ave. / Sinclair Rd. (48.46700, -123.30764)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.3003	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Corvallis, OR Benton Co. United States	SW 53rd St. / SW West Hills Rd. (44.55634, -123.31206)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4882	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Sidney, BC Capital Regional District Canada	Beacon Ave. / 1st St. (48.64890, -123.39530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.6171	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2004-2009). ICD estimated from Google Maps linework.
Sidney, BC Capital Canada	Ocean Ave. / Fifth St. (48.64439, -123.40030)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.0891	Other (At-Grade) Single-Lane	2013	http://www.sidney.ca/Assets/Administration/2014/January+2014+Town+Talk.pdf ICD estimated from Google Maps linework.
North Saanich, BC Capital Canada	McTavish Rd. / Lochside Dr. / Hwy 17 NB Ramps (48.62987, -123.41133)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.7827	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
North Saanich, BC Capital Canada	McTavish Rd. / Canora Rd. / Hwy 17 SB Ramps (48.63091, -123.41283)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 48.9391	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
North Saanich, BC Capital Canada	McTavish Rd. / Transit Center parking (48.63012, -123.41396)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 20.5232	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
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.
Victoria, BC Capital Canada	Watkiss Way / Despoilation Alley (48.46815, -123.43039)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.8429	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Victoria, BC Capital Canada	Helmcken Rd. / Kingham Pl. / Vickery Rd. (48.46226, -123.43199)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.9673	Other (At-Grade) Single-Lane	2007	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
North Saanich, BC Capital Canada	Willingdon Rd. / Electra Blvd. (48.63765, -123.43312)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 55.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2012	Turbo roundabout with raised lane dividers for single multilane movement (southbound double left turn).
Victoria, BC Capital Canada	Helmcken Rd. / Pheasant Ln. (48.45805, -123.43637)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.9692	Other (At-Grade) Single-Lane	2007	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Central Saanich, BC Capital Regional District Canada	West Saanich Rd. / Verdier Ave. (48.57791, -123.44920)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2854	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2004-2009). ICD estimated from Google Maps linework.
View Royal, BC Capital Canada	Six Mile Rd. / Atkins Rd. (48.45846, -123.46432)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2024	https://www.viewroyal.ca/EN/meta/new/2024-latest-news/new-roundabout-in-view-royal-is-complete.html?media=mobile
Victoria, BC Capital Canada	McCallum Rd. / Redington Ave. (48.46040, -123.49628)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6802	Other (At-Grade) Single-Lane	2002	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Langford, BC Capital Canada	Goldstream Ave (Hwy 1A) / Bryn Maur Rd. / (parking) (48.44860, -123.49842)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.0000	Other (At-Grade) Single-Lane	2009	Year Completed estimated (before 2010).
Langford, BC Capital Canada	Peatt Rd. / Brock Ave. / Larkhall Rd. (48.45294, -123.49849)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	Upgraded from traffic calming circle to roundabout in 2020. https://www.sookenewsmirror.com/community/new-roundabout-along-peatt-road-completed-in-langford/
Langford, BC Capital Canada	Millstream Rd. / Bear Mountain Pkwy. (48.47140, -123.50526)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022
Colwood, BC Capital Canada	Latoria Rd. / Veterans Memorial Pkwy. / Medalist Ave. (48.40853, -123.50873)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Unknown	2023	https://www.colwood.ca/news-events/news/2023-12-15-000000/now-open-new-roundabout-latoria-road-and-veterans-memorial
Victoria, BC Capital Canada	Arngask Ave. / Echo Valley Dr. (48.46742, -123.51255)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.9244	Other (At-Grade) Single-Lane	2003	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Victoria, BC Capital Canada	Langford Pkwy. / Clearwater Rd. (48.44346, -123.52009)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.3139	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2004-2010). ICD estimated from Google Maps linework.
Victoria, BC Capital Canada	Bear Mountain Pkwy. / Nicklaus Dr. / Rivers Crossing (48.47523, -123.52252)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.3367	Other (At-Grade) Single-Lane	2005	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Victoria, BC Capital Canada	Bear Mountain Pkwy. / Hedgestone Ln. / Champions Way (48.47491, -123.52815)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.5451	Other (At-Grade) Single-Lane	2005	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Victoria, BC Capital Canada	Glen Lake Rd. / Park Dale Dr. / Alouette Dr. (48.44038, -123.52993)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 30.0000	Other (At-Grade) Single-Lane	2010	Year Completed estimated (1985-2011).
Victoria, BC Capital Canada	Bear Mountain Pkwy. / Country Club Way (48.47595, -123.53110)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.1693	Other (At-Grade) Single-Lane	2002	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Victoria, BC Capital Canada	West Shore Pkwy. / Langford Pkwy. (48.44551, -123.53750)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 43.5730	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	ICD estimated from Google Maps linework.
Langford, BC Capital Canada	West Shore Pkwy. / Amy Rd. (48.45617, -123.53986)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 35.0000	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2006-2009).
Victoria, BC Capital Canada	West Shore Pkwy. / (unknown) (48.44867, -123.54036)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.3109	Other (At-Grade) Single-Lane	2017	Third approach stubbed for future use. ICD estimated from Google Maps linework.
Duncan, BC Cowichan Valley Canada	Kingsview Rd. / Nevilane Dr. (48.79787, -123.62230)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.8956	Other (At-Grade) Single-Lane	2008	3rd approach stubbed off. Year Completed estimated (2006-2010). ICD estimated from Google Maps linework.
Duncan, BC Cowichan Valley Canada	Kingsview Rd. / Donnay Dr. (48.79786, -123.64314)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.1088	Other (At-Grade) Single-Lane	2013	4th approach stubbed off. 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	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.
Duncan, BC Cowichan Valley Canada	Beverly St. / York Rd. (48.78496, -123.69881)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.4771	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Duncan, BC Cowichan Valley Canada	University Way / (parking lot) / (future road) (48.78360, -123.70415)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.1171	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2006-2012). ICD estimated from Google Maps linework.
North Cowichan, BC Cowichan Valley Regional District Canada	Canada Ave. / Sherman Rd. (48.79124, -123.71300)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2006-2012).
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.
Chemainus, BC Cowichan Valley Canada	Chemainus Rd. / River Rd. (48.91811, -123.71518)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	https://www.vancouverislandfreedaily.com/community/paving-done-finishing-the-concrete-work-the-next-priority-on-chemainus-road/
Duncan, BC Cowichan Valley Canada	Green Rd. / (shopping center parking lot) (48.79946, -123.71861)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.6813	Other (At-Grade) Single-Lane	2009	Add-lane right-turn bypass lane on east leg. Year Completed estimated (2006-2012). ICD estimated from Google Maps linework.
North Cowichan, BC Cowichan Valley Regional District Canada	Government St. / Gibbins Rd. (48.78616, -123.71970)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	2009
Sooke, BC Capital Canada	Hwy 14 / Brownsey Blvd. / (parking) (48.37853, -123.72100)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0000	Other (At-Grade) Single-Lane	2015
Duncan, BC Cowichan Valley Canada	Drinkwater Rd. / Lane Rd. (48.80320, -123.72557)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.1057	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Chemainus, BC Cowichan Valley Canada	Chemainus Rd. / Victoria Rd. / Oak St. (48.92543, -123.72770)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 41.5903	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Raymond, WA Pacific Co. United States	US 101 / Henkle St. (SR 6) (46.68234, -123.73051)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.0389	Other (At-Grade) Single-Lane	2018	http://www.wsdot.wa.gov/Projects/US101/SR6IntersectionAndDrainage/default.htm 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.
Duncan, BC Cowichan Valley Canada	Somenos Rd. / Drinkwater Rd. (48.80307, -123.73683)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.8925	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Fort Bragg, CA Mendocino Co. United States	E Fir St. / N Harrison St. (39.44803, -123.80204)	Traffic Calming Circle Removed	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	From the City of Fort Bragg: "The City installed a small neighborhood traffic calming circle in about 2012 on E Fir Street at N Harrison Street. Unfortunately, due to many years of complaints as well as traffic collision increases at the intersection, the roundabout was removed in 2019. It is still shown in Google Maps but it is removed now and replaced with at 4-way stop intersection."
Fort Bragg, CA Mendocino Co. United States	Hwy 1 / Simpson Ln. (39.41239, -123.80830)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.5958	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Aberdeen, WA Grays Harbor Co. United States	E Market St. / F St. / Fuller Way (46.97745, -123.81394)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.youtube.com/watch?v=NUdE390ndyA
Ladysmith, BC Vancouver Island Regional District Canada	1st Ave. / Symonds St. (48.99727, -123.82330)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4258	Other (At-Grade) Single-Lane	2000	First roundabout in British Columbia. Sponsored by ICBC. http://www.sustainability.ca/Docs/Transportation%20Case%20Studies-%20Technical%20Engineering%20Solutions.pdf?CFID=1123696&CFTOKEN=10586703 ICD estimated from Google Maps linework.
Astoria, OR Clatsop Co. United States	US 101 / Hwy 202 (Nehalem Highway) (46.18290, -123.86070)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.4797	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	Opened September 2002. First multilane roundabout on Oregon state highway system. ICD estimated from Google Maps linework.
Cassidy, BC Nanaimo Canada	Spit Fire Rd. / (unknown) (49.05375, -123.87605)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.0000	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2010-2011).
Nanaimo, BC Nanaimo Canada	Boxwood Rd. / Dufferin Crescent (49.18286, -123.98541)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 2 Driveways 34.3494	Other (At-Grade) Single-Lane	2011	One approach and two driveways stubbed out. Year Completed estimated (2010-2012). ICD estimated from Google Maps linework.
Blue Lake, CA Humboldt Co. United States	Blue Lake Blvd. / Chartin Rd. (40.88640, -123.99540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.3789	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Nanaimo, BC Nanaimo Canada	Rutherford Rd. / Nelson Rd. / Linley Valley Dr. (49.22623, -124.02218)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.6593	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Nanaimo, BC Nanaimo Canada	Linley Valley Dr. / Turner Rd. (49.22602, -124.03313)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.6396	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Newport, OR Lincoln Co. United States	SE Marine Science Dr. / Hatfield Marine Science Center entrance / (parking lot) (44.62304, -124.04677)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.0530	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Cowichan Lake, BC Cowichan Valley Regional District Canada	King George St. / Cowichan Ave. / Sahtlam Ave. (48.82261, -124.05280)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 35.0000	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2011).
Nanaimo, BC Nanaimo Canada	Mary Ellen Dr. / (parking) (49.23879, -124.05474)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	2023	https://nanaimonewsnow.com/2023/04/16/new-mary-ellen-dr-roundabout-substantially-complete/
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.
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	Sunset Ave. / Foster Ave. / Jay St. (40.87972, -124.08482)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5754	Other (At-Grade) Single-lane w/ Traversable Central Island	2014	Speed hump on southeast leg. Date: https://krcrtv.com/archive/new-roundabout-open-in-arcata-_2016051318431286 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.
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.
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.
McKinleyville, CA Humboldt Co. United States	School Rd. / Salmon Ave. / McKinleyville Ave. (40.93439, -124.11240)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.0680	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2012-2014). ICD estimated from Google Maps linework.
Crescent City, CA Del Norte Co. United States	Humboldt Rd. / Sand Mine Rd. (41.74014, -124.15656)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 32.9735	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Ocean Shores, WA Grays Harbor Co. United States	Point Brown Ave / Chance a la Mer (47.00745, -124.16140)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 39.9064	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Qualicum Beach, BC Nanaimo Canada	Hwy 19A / Memorial Ave. (49.35605, -124.43944)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Unknown	2021	https://nanaimonewsnow.com/2021/12/01/roundabout-at-key-qualicum-beach-intersection-poised-to-open/
Qualicum Beach, BC Nanaimo Canada	Memorial Ave. / Rupert Rd. (49.33923, -124.44198)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.1356	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011). ICD estimated from Google Maps linework.
Courtenay, BC Comox-Strathcona Regional District Canada	Cumberland Rd. / Willemar Ave. (49.67717, -125.00410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.7310	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Campbell River, BC Strathcona Canada	Maryland Rd. / Willow Creek Rd. (49.95296, -125.21632)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2009).
Campbell River, BC Strathcona Canada	Hwy 19A (S Island Hwy) / Rockland Rd. (49.98338, -125.22371)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	https://www.campbellrivermirror.com/news/rockland-19a-roundabout-nears-completion/
(unincorporated), BC Kitimat-Stikine Canada	Trans Canada Hwy (Hwy 16) / Hwy 37 / Lakelse Ave. (54.51163, -128.55788)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.4546	Other (At-Grade) Multilane (2 Lane, unspecified)	2019	https://www.terracestandard.com/news/roundabout-opens-in-terrace-at-hwy-16-and-hwy-37/ ICD estimated from Google Maps linework.