The Garden State Parkway (GSP) is a controlled-access toll road that stretches the north–south length of eastern New Jersey from the state's southernmost tip near Cape May north to the New York state line at Montvale. Its name refers to New Jersey's nickname, the "Garden State". The parkway has an unsigned reference number of Route 444 by the New Jersey Department of Transportation (NJDOT). At its north end, the road becomes the Garden State Parkway Connector, a component of the New York State Thruway system that connects to the Thruway mainline in Ramapo, New York.
The Garden State Parkway is the longest highway in the state at approximately 172 miles (277 km), and, according to the International Bridge, Tunnel and Turnpike Association, was the busiest toll road in the United States in 2006. Most of the highway north of the Raritan River runs through heavily populated areas. Between the Raritan River and Toms River, the highway passes through lighter suburban development, while south of Toms River, the road mostly runs through unspoiled wilderness in the Pine Barrens and swampland, interspersed with small towns and Jersey Shore beach communities. The highway has a posted speed limit of 65 miles per hour (105 km/h) for most of its length and is primarily for passenger vehicle use; trucks weighing over 10,000 pounds (4,500 kg) are prohibited north of exit 105.