New Jersey Transit line 605 bus (Princeton-Quaker Bridge Mall route) can be boarded near the Institute at the corner of Nassau Street and University Place or at the NJ Transit Princeton Branch Rail "Dinky" Station at Alexander Street. The line 605 bus stops at Montgomery Center, Montgomery Township, Princeton North Shopping Center, Princeton Township, Princeton Boro, Princeton Shopping Center, Princeton Medical Center, Palmer Square, Princeton University, Princeton Branch "Dinky" Rail Station, Princeton Market Fair, West Windsor, Nassau Park, Wal-Mart/Sam's Club, Lawrence, Mercer Mall, Quaker Bridge Mall. The New Jersey Division of Motor Vehicles is located on US Highway 1, south of Quaker Bridge Mall.
New Jersey Transit line 606 bus (Mercerville-Princeton via Trenton) can be boarded on the northbound side of the road, alongside the Princeton Theological Seminary, at the corner of Elm Road and Stockton Street (0.8 miles from the Institute). The line 606 bus to downtown Princeton stops at Palmer Square and the Princeton Shopping Center.
The line 606 bus (Princeton-Mercerville via Trenton) can be boarded on the southbound side of the road, a short distance from the Morven Museum, at the corner of Elm Road and Stockton Street or Palmer Square for transportation to the Social Security office in Trenton. The line 606 bus stops at the corner of West State and Warren Streets near the Social Security office located at 50 East State Street. The line 606 bus returning to Princeton boards at East State and North Broad Streets. This line 606 bus connects directly to the Trenton Transit Center and River Line, for rail connections to Amtrak's Northeast Corridor, NJ Transit, SEPTA, and NJ Transit Light Rail to Camden, NJ.
All of these NJ Transit Buses and most trains are equipped for bicycle carriage as well as being wheelchair accessible.
There is also a bus line to New York City via Suburban Transit bus company, bus number 100, which departs from Nassau Street in Princeton, at the main gates to the university, and travels to Port Authority bus station in Manhattan. Information about that can be found on the web at: https://web.coachusa.com/suburban/ss.tickets.asp.