It pops up on both sides of the road, mostly in the morning. Sometimes the police set up a speed trap during the "PM" rush hour. In actuality, they switch their location between three or four main spots on 106th St. The major problem is that the limit is 30mph on a four lane (two lanes each direction) road with several very large hills. An appropriate speed limit would be 35. It’s too difficult to keep your car moving at 30mph when you are traveling up and down large hills.