All car moved as on 65 limited zone, e.g. 70-75. I was stopped by said speed at 76 in 55 zone. I really did not any sign when I come to south. As I drive lot on I-81, and knew there will have 55 sign more close to the splitting point. Really after I back on I-81 again about 100 meter, there is 55 sign. Could the officer mixed going south not yet enter the 55 zone but if drive to north, he is right the people just comes out the 55 zone.