New York State Route 304 (NY 304), also known as "Rockland County Clerk Paul Piperato Memorial Highway", as well as Pearl Street for its first half a mile and Main Street for other parts, is a north–south state highway located in central Rockland County, New York, in the United States. The 10.38-mile (16.70 km) route begins at the New Jersey–New York border in Pearl River and ends at an intersection with U.S. Route 9W (US 9W) in the community of Congers. The route is a main route through Rockland County, intersecting NY 59 and indirectly connecting to the New York State Thruway and the Palisades Interstate Parkway (PIP) in Nanuet. NY 304 has three distinct sections: a freeway that extends from Pearl River to Nanuet, a surface section between Nanuet and New City, and an expressway linking New City to Haverstraw.

U.S. Route 9W (US 9W) is a north–south United States Numbered Highway in the states of New Jersey and New York. It begins in Fort Lee, New Jersey, as Fletcher Avenue crosses the US 1/9, US 46, and Interstate 95 (I-95) approaches to the George Washington Bridge, and heads north up the west side of the Hudson River to US 9 in Albany, New York. As its "W" suffix indicates, US 9W is a westerly alternate route of US 9 between the two locations. US 9W directly serves three cities—Newburgh, Kingston, and Albany—and enters the vicinity of several others. As the route heads north, it connects to several highways of regional importance, including I-84, US 209, New York State Route 23 (NY 23), and US 20. Much of US 9W parallels the New York State Thruway and NY 32; additionally, the latter overlaps with US 9W in four different locations.