Coming off Loop 306 going South on Foster Rd. and coming from the North across Loop 306 from Sunset Drive to Foster Rd., speed limit is 45. On the South side of loop speed limit becomes 30 MPH. The street is down hill. A city cop sits on Buckskin lane or on Foster Rd. with radar. It is difficult to slow down to 30 quickly because the road is down hill. There are no houses or other impediments that would dictate such a slow speed limit.