Roundabouts Database Index

29616 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
Monterey, CA Monterey Co. United States	SR 68 / Olmsted Rd. (36.58399, -121.84976)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 46.6344	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Del Rey Oaks, CA Monterey Co. United States	SR 68 / Canyon del Rey Blvd. / Monterra Rd. (36.58090, -121.82797)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 52.5780	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Anticipated opening year 2029.
Monterey, CA Monterey Co. United States	SR 68 / York Rd. (36.57156, -121.80839)	Roundabout Unknown	All-Way Yield Unknown	3 Approaches 0 Driveways 46.7868	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Salinas, CA Monterey Co. United States	SR 68 ./ Pasadera Dr. / Boots Rd. (36.56766, -121.77857)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 46.9087	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Salinas, CA Monterey Co. United States	SR 68 / Laureles Grade Rd. (36.56964, -121.75566)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 46.5427	Other (At-Grade) Single-Lane		Future 4th leg connects to Laguna Seca Entrance. Anticipated opening year 2029.
Salinas, CA Monterey Co. United States	SR 68 / Corral de Tierra Rd. / Cypress Church Dr. (36.57854, -121.72709)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 46.1772	Other (At-Grade) Single-Lane		Oval shaped. ICD = 151.5 ft x 141.5 ft. Anticipated opening year 2029.
Salinas, CA Monterey Co. United States	SR 68 / San Benancio Rd. (36.57977, -121.72073)	Roundabout Unknown	All-Way Yield Unknown	3 Approaches 0 Driveways 45.2323	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Salinas, CA Monterey Co. United States	E Alisal St. / Alisal Rd. / Bardin Rd. (36.67331, -121.60192)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Salinas, CA Monterey Co. United States	Alisal Rd. / Sconberg Pkwy. (36.67234, -121.60073)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.0144	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Mancos, CO Montezuma Co. United States	Ruins Rd. / (entrance to visitor center) / (service road) (37.33917, -108.41185)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Entrance to Mesa Verde National Park. Year Completed estimated (2020-2023). Previous control was mix of stop and uncontrolled movements.
Old Salford Township, PA Montgomery United States	Old Skippack Rd. / Schwenksville Rd. / Shelly Rd. (40.29058, -75.42686)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2023	The roundabout was installed as part of the Districtwide roundabout program (PennDOT Engineering District 6-0) which was started to address intersection safety in the District. https://www.penndot.pa.gov/regionaloffices/district-6/pages/details.aspx?newsid=8481
Conroe, TX Montgomery Co. United States	Harpers Way / Preserve Way (30.19869, -95.44163)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2022	Single-stage pedestrian crossings.
Conroe, TX Montgomery Co. United States	Preserve Way / Harpers Trace (30.19433, -95.42699)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 42.6720	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
Conroe, TX Montgomery Co. United States	Preserve Way / Bayou Oaks Dr. (30.19425, -95.42220)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2021	Single-stage pedestrian crossings. Year Completed estimated (2020-2022).
Conroe, TX Montgomery Co. United States	Harpers Trace / Harpers School Rd. (30.20566, -95.42716)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2015	Year Completed estimated (2015-2016).
Shenandoah, TX Montgomery Co. United States	Vision Park Blvd. / Grogans Mill Rd. (30.18988, -95.46596)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2009	Right-turn-only arrows at entries.
Montgomery, TX Montgomery Co. United States	Noble Greens Blvd. / Bungalow Dr. (30.28008, -95.56863)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Montgomery, TX Montgomery Co. United States	Bonterra Blvd. / Mountain Laurel Dr. / S Claret Cup Ln. (30.28166, -95.54889)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2013	No truck apron. Year Completed estimated (2011-2015).
Montgomery, TX Montgomery Co. United States	Central Pine St. / Crest Sights Dr. (30.29200, -95.55637)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2440	Other (At-Grade) Single-Lane	2020	No truck apron. Year Completed estimated (2020-2021).
Magnolia, TX Montgomery Co. United States	Cimarron Creek Blvd. / Tolby Creek Ln. / Winding Pass Ln. / Ute Creek Ln. (30.21509, -95.59255)	Roundabout Existing	All-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Magnolia, TX Montgomery Co. United States	Tall Oaks Way / W Border Oaks Dr. (30.21417, -95.66748)	Other Existing	Unknown Unknown	4 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Magnolia, TX Montgomery Co. United States	Audubon Pkwy. / Audubon Trace (30.22075, -95.71643)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 73.1520	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Year Completed estimated (2020-2022).
New Florence, MO Montgomery Co. United States	MO 19 / Tree Farm Rd. / I-70 EB Ramps (38.89821, -91.45624)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2023	https://www.modot.org/node/35298
New Florence, MO Montgomery Co. United States	MO 19 / Booneslick Rd. / I-70 WB Ramps (38.90090, -91.45707)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2023	https://www.modot.org/node/35298 Combined freeway interchange with at-grade intersection. Previously, the interchange was stop controlled and the intersection had traffic lights.
Clarksville, TN Montgomery Co. United States	Henry Place Blvd. / Bandera Dr. (36.60740, -87.38149)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2013
Magnolia, TX Montgomery Co. United States	Magnolia Ridge Blvd. / Jewett Meadow Dr. / Rogerdale River Dr. (30.21121, -95.73470)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Gaithersburg, MD Montgomery Co. United States	Perry Pkwy. / (parking) (39.14899, -77.21048)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2004	Year Completed estimated (2002-2005).
Redland, MD Montgomery Co. United States	Columbus Ave. / Gramercy Blvd. (39.12362, -77.16494)	Other Existing	All-Way Stop Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
King Farm, MD Montgomery Co. United States	Pleasant Circle (39.11623, -77.17518)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Pedestrian access to central island.
Potomac, MD Montgomery Co. United States	10600 Morning Field Dr. / Sunny Brooke Ln. / Sunny Brooke Pl. (39.07423, -77.21561)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Potomac, MD Montgomery Co. United States	Broad Green Dr. / Clagett Farm Dr. (39.04566, -77.19669)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Potomac, MD Montgomery Co. United States	Larkmeade Ln. / Bells Ridge Dr. (39.03483, -77.16775)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Woodbourne-Hyde Park, OH Montgomery Co. United States	Mad River Rd. / W Alex Bell Rd. (39.65510, -84.19420)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.whio.com/news/local/washington-twp-roundabout-set-open-within-next-week/JEWIGLMTEBBDXJ3PZ2QO3ILVQ4/
Derwood, MD Montgomery Co. United States	Achille Ln. / Heartwood Dr. (39.12925, -77.11543)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Derwood, MD Montgomery Co. United States	Heartwood Dr. (39.13239, -77.11434)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Derwood, MD Montgomery Co. United States	Coppelia Dr. / Toboggan Ln. (39.13566, -77.11938)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Olney, MD Montgomery Co. United States	Martins Dairy Cir. / Old Baltimore Rd. (39.13345, -77.07382)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Painted splitter islands.
Wheaton, MD Montgomery Co. United States	Park Vista Dr. / Wintergate Dr. / Longmeade Crossing Dr. (39.10755, -77.05340)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2020	Painted splitter islands added 2020.
Ashton, MD Montgomery Co. United States	Harbour Town Dr. / Grand Cypress Ct. (39.13205, -77.00407)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Montgomery, AL Montgomery Co. United States	Taylor Lakes Pkwy. / Towering Oaks Dr. (32.31210, -86.19300)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Montgomery, AL Montgomery Co. United States	Monument Park Dr. / Chastain Park Dr. / Morning Side Park Dr. (32.30911, -86.14268)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2008-2011).
Travilah, MD Montgomery Co. United States	Marwood Hill Dr. / Rivers Bend Ln. (39.03022, -77.23432)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Gaithersburg, MD Montgomery Co. United States	Upshire Circle (39.11353, -77.22397)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Olney, MD Montgomery Co. United States	Wickham Rd. / Broom Dr. (39.15708, -77.09362)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Olney, MD Montgomery Co. United States	Martins Dairy Cir. / Gooseneck Terrace (39.13176, -77.07439)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Manor View Cir. / Milestone Manor Ct. (39.20854, -77.24868)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Stardrift Dr. (39.20560, -77.25039)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Emerald Dr. (39.20479, -77.25262)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Milestone Manor Ln. / Royal Crown Dr. (39.20518, -77.25877)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Pickering Dr. / Pickering Pl. (39.18854, -77.27173)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Club Hill Dr. / Thackery Pl. (39.18531, -77.27012)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Germantown, MD Montgomery Co. United States	Kildale Hills Terrace / Galway Bay Cir. (39.17826, -77.27643)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Chevy Chase, MD Montgomery Co. United States	Rosemary Circle [Rosemary St. / Hillcrest Pl. / Stanford St.] (38.97789, -77.08055)	Other Existing	All-Way Stop Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Mount Sterling, KY Montgomery Co. United States	Indian Mound Dr. / Spencer Pike (38.05454, -83.91678)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Silver Spring, MD Montgomery Co. United States	Gist Ave. / Woodbury Dr. (38.98948, -77.02294)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Clarksville, TN Montgomery Co. United States	Needmore Rd. / N Whitfield Rd. (36.58403, -87.33613)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2024	https://clarksvillenow.com/local/rhonda-the-roundabout-has-public-debut-city-of-clarksville-adjusting-signage-signal-timing/
Potomac, MD Montgomery Co. United States	Old Seven Locks Rd. / Quarry Manor Terrace (38.99371, -77.16028)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Silver Spring, MD Montgomery Co. United States	Woodmoor Dr. / Lexington Dr. (39.02215, -77.00818)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Limerick, PA Montgomery Co. United States	Swamp Pike / Lewis Rd. / W Arcadia Dr. (40.23457, -75.52624)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	2020	https://patch.com/pennsylvania/limerick/swamp-pike-reopens-limerick-township
Bethesda, MD Montgomery Co. United States	Boxwood Rd. / Spangler Ave. (38.94781, -77.10888)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Bethesda, MD Montgomery Co. United States	Tournay Rd. / Spangler Ave. (38.94811, -77.11053)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
(unincorporated), MD Montgomery Co. United States	Travilah Rd. / Turkey Foot Rd. / Hanson Farm Dr. (39.07993, -77.25560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2020	Painted splitter islands. Year Completed estimated (2019-2020).
Germantown, MD Montgomery Co. United States	Crossview Rd. / Autumn Crest Rd. (39.16717, -77.30075)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Crestmount Rd. / Kings Crossing Rd. (39.16175, -77.30841)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Kings Crossing Blvd. / Cornflower Rd. (39.16222, -77.30397)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Kings Crossing Blvd. / Ashmeade Rd. (39.16235, -77.29971)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane		Painted splitter islands. Pedestrian crossings next to circulatory roadway.
Germantown, MD Montgomery Co. United States	Ashleigh Greene Rd. / Ashmeade Rd. (39.16013, -77.29900)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Ashleigh Greene Rd. / Cornflower Rd. (39.15879, -77.30324)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Wonderland Way / Chalet Dr. (39.15516, -77.27464)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Tom's Creek, VA Montgomery Co. United States	Honeysuckle Dr. (37.24423, -80.44050)	Other Existing	Unknown Unknown	3 Approaches 15 Driveways 0.0000	Other (At-Grade) Single-Lane
Olney, MD Montgomery Co. United States	Wickham Rd. / Olney Mill Rd. / Dunsford Dr. (39.16071, -77.09596)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on three legs.
Gaithersburg, MD Montgomery Co. United States	Hoover Farm Dr. / Holland Meadow Ln. (39.18129, -77.13125)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Gaithersburg, MD Montgomery Co. United States	Hoover Farm Dr. / Brass Bucket Ct. (39.17775, -77.13018)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Boyds, MD Montgomery Co. United States	Crazy Quilt Ct. (39.16123, -77.30454)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Rockville, MD Montgomery Co. United States	Henderson Circle (39.08800, -77.16702)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
North Potomac, MD Montgomery Co. United States	Bald Cypress Dr. / Willow Tree Dr. / Cherrydale Dr. (39.08158, -77.20120)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Rockville, MD Montgomery Co. United States	Valley Dr. / Aqua Ln. (39.07945, -77.20575)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Gaithersburg, MD Montgomery Co. United States	Parkview Ave. / Uptown St. (39.15334, -77.22619)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2012	Right-turn-only lane on northwest leg. Year Completed estimated (2011-2012).
Clarksburg, MD Montgomery Co. United States	Granite Rock Rd. / Grand Elm St. (39.24126, -77.26647)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Clarksburg, MD Montgomery Co. United States	Saint Clair Rd. / Timber Creek Ln. / Brewers Tavern Terrace / (unknown) (39.23680, -77.27531)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Sandy Spring, MD Montgomery Co. United States	Alexander Manor Dr. / Red Tail Ct. / Halex Hill Ct. (39.13149, -77.01778)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Sandy Spring, MD Montgomery Co. United States	Friends House Rd. / Quaker Ln. / (parking) (39.14071, -77.03036)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Observation Dr. / Goldenrod Ln. (39.18419, -77.24566)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2013	Year Completed estimated (2012-2014).
Germantown, MD Montgomery Co. United States	Crystal Rock Dr. / Century Blvd. (39.20326, -77.27356)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2015	Striping added 2019-2021. Inconsistent lane use markings between entry and circulatory roadway.
Clarksburg, MD Montgomery Co. United States	Little Seneca Pkwy. / Cabin Branch Ave. (39.21654, -77.28310)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2016	Year Completed estimated (2016-2017). Striping added 2019-2021.
Clarksburg, MD Montgomery Co. United States	Broadway Ave. / Little Seneca Pkwy. (39.21646, -77.28540)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2016	Year Completed estimated (2015-2017). Striping added 2019-2021.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. / W Old Baltimore Rd. (39.21396, -77.29731)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2019-2020).
Clarksburg, MD Montgomery Co. United States	Cabin Branch Ave. / Skimmer St. (39.22020, -77.28435)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2016	Year Completed estimated (2015-2017). Striping added 2019-2021.
Silver Spring, MD Montgomery Co. United States	Ritchie Ave. / Oswego Ave. (38.98602, -77.00877)	Traffic Calming Circle Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Painted splitter islands.
Germantown, MD Montgomery Co. United States	Summer Oak Dr. / Summer Oak Ct. (39.16467, -77.24384)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on two legs.
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).
Olney, MD Montgomery Co. United States	Brightwood Rd. / Winding Oak Dr. / Weston Pl. (39.16065, -77.09120)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cloverly, MD Montgomery Co. United States	Harbour Town Dr. / Firestone Dr. (39.12855, -76.99401)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cloverly, MD Montgomery Co. United States	Firestone Dr. / Sea Island Ct. (39.12744, -76.99807)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Blue Bell, PA Montgomery Co. United States	Anvil Ln. (40.16062, -75.28413)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Blue Bell, PA Montgomery Co. United States	Arbor Way / Jolly Rd. / (parking) (40.14222, -75.28498)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2011-2016).
Schwenksville, PA Montgomery Co. United States	Greenshire Blvd. / Chatham Ln. (40.22962, -75.47896)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Olney, MD Montgomery Co. United States	Fox Valley Dr. / Hillcroft Dr. (39.12441, -77.07962)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		No splitter islands.
Miamisburg, OH Montgomery Co. United States	Austin W Blvd. / Automation Way (39.59850, -84.24378)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 44.1728	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Kettering, OH Montgomery Co. United States	Forrer Blvd. / Madison St. (39.71565, -84.14854)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.4476	Other (At-Grade) Multilane (2 Lane, unspecified)	1996	ICD estimated from Google Maps linework.