Enforcement is usually "rolling". There are generally two or three State patrol cars rolling in this area between 9 and 1 a.m. Sometimes they are in the rest area watching the traffic. They come up on you so fast and close that it can be frightening. The limit is posted at 55 m.p.h. You can usually travel at 60 to 65 without a problem. Try staying out of the left lane. One patrol car travels south on Rte 128 between 11:30 p.m. and midnight, every night, at a high rate of speed. You can practically set your clock by him.