Lower Township moved the "your speed" sign from north bound side

Lower Township - Lower Township moved the "your speed" sign from north bound side of Rt. 9, to south bound side. When it was on north lane it read my speed at the same my car said. Since it was moved it says I am going 4 mph faster than my car indicates. To be sure, yesterday I drove by the one on Bayshore Road, north end of Villas. It agreed with my car, so did the one on Bay Dr between Town Bank and Villas. The one on RT 9 is not accurate and needs to be calibrated.