Less than later, CR 526 turns due north again and heads for Princeton Junction while Windsor Road (CR 641) travels southeast. CR 535 continues to the northeast as Old Trenton Road, crossing into East Windsor. In East Windsor, it intersects CR 571, with the entrance to the Route 133 bypass of Hightstown visible to the right. CR 535 crosses the Millstone River and into Middlesex County. CR 535 is now traversing Cranbury, traveling for a just under before reaching the township's Main Street. It turns left toward the downtown area, while CR 539 comes from the right on South Main Street and ends while CR 685 continues down Old Trenton Road to its terminus at US 130. Once through Cranbury, CR 535 turns right onto Plainsboro Road and shortly thereafter, merges into another short concurrency, this time with US 130. After less than , it breaks off to the right, taking a north-by-northeast path toward the New Jersey Turnpike and the lower Raritan River valley. CR 535 enters South Brunswick Township. Though signed at various points as Cranbury-South River Road, South River Road and Cranbury Road, it is officially only the latter. It meets Route 32, providing access to the Turnpike as it passes to the right. Originally all traffic to and from the Turnpike's exit 8A used Route 32, but vehicles leaving the Turnpike and not traveling towards Jamesburg now exit onto CR 535. CR 535 runs along the boundary between South Brunswick and Monroe and then crosses under the Turnpike. It leaves the border for a short stretch starting at an intersection with CR 522, then returns to what is now the township line with East Brunswick Township for . Later it enters East Brunswick completely. CR 535 is one of the main thoroughfares of East Brunswick, along with Route 18, Ryders Lane (CR 617), and Dunhams Corner Road. The latter branches off at the same point CR 535 moves all the way into the township, banks hard to the right at East Brunswick Community Park just shy of the Turnpike, then rejoins CR 535. CR 535 intersects Ryders Lane, passes East Brunswick High School on the right, then approaches a complex interchange with Route 18, providing access to New Brunswick and the Turnpike at exit 9 to the northwest, Old Bridge and shore points to the south, and Spotswood via CR 613 (Summerhill Road). CR 535 itself