[VaSteve]

Originally Posted by masraum

They are installed to keep people from cutting the corner through the yard causing ruts in the grass. Lots of shopping centers are doing the same thing to keep the guys driving the delivery semis through the landscaping. For private homes, it's more prevalent when there isn't a ditch.

A friend of mine has something similar in his driveway. He has shop out back and I bring my car there sometimes. It's uphill to the shop and it's a long driveway. It's very nerveracking backing down that drive in a track car with fixed back seats designed to keep you looking forward.