Pay attention when traveling on Northfield Road (just south of Harvard Road. Near the high school, there are often two or three cruisers running radar. I have no complaint on enforcing speed limits, especially in school zones. However, the school zone hours are not posted and the flashing lights are not always on during supposd times of enforcement. A crusier often sits in a community center driveway, right beside a speed limit sign that posts 40 MPH — very deceiving. You think you’re out of the 20-MPH school zone when you see the 40 MPH speed limit sign. But you’re not. A lot of people have tickets to prove it.