I-575 and Riverstone Parkway (Exit 20) – Many times I have spotted Canton Police parked at the end of the exit ramp at Exit 20. The car will be sitting sideways so the driver’s side window faces north. The officer shoots radar onto southbound traffic. This is where the speed limit decreases southbound—if you spot a vehicle at the bottom of the entrance ramp (in the grass), slow down immediately. This may save you a ticket!