List of roundabouts in Pennsylvania

The following is a list of traffic circles and ovals in Pennsylvania that meet the definition of a roundabout. They are not regulated by traffic signals and entering traffic yields to traffic already in the circle. PennDOT initiated the construction of roundabouts in 2004 to alleviate accident occurrence and/or congestion of selected intersections.
*Abbottstown: U.S. Route 30 (King Street) and Route 194 (Queen Street)
*Campbelltown: Route 117 (Forge Road) and Northside Drive
*Delta: Route 74 (Delta Road,) Route 851 (Bryansville Road,) and Broad Street Extension
*Linglestown:
**Route 39 (Linglestown Road) and North Mountain Road
**Route 39, Blue Mountain Parkway, and Pennsylvania Avenue
*Mars:
**Cranberry Woods Drive and Longtree Way
**Westinghouse Drive (in the Westinghouse complex parking lot)
*Marshalls Creek: U.S. Route 209 (Marshalls Creek Bypass and Seven Bridges Road)
*Philadelphia: Walnut Lane, Park Line Road, and West Johnson Street
*Quakertown: Old Bethlehem Pike and Station Road
*Rochester: Route 18 (Brighton Avenue and Rhode Island Avenue,) Route 68 (Adams Street,) and East Park Avenue
*Spring Grove: Route 116 (Hanover Road,) Roths Church Road, and West Hanover Street
*Unionville, Chester County: Route 82 (Unionville Road and West Doe Run Road) and East Doe Run Road
*Warminster Township: Old York Road at the entrance to an office park
*Williamsport:
**Via Bella Street and Court Street
**Via Bella Street and Mulberry Street
**Via Bella Street and William Street
*Zieglerville: Route 29 (Gravel Pike) and Route 73 (Big Road)
 
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