jasonh300 wrote:Like a parking lot, if you want to reduce the likelihood of people getting routed through there that aren't permitted, you can put a little stub of a private road right at the entrance(s) and then make the rest of the roads in there regular streets. That would prevent routing inside of the restricted area from making illegal turns to avoid multiple segments of private streets.
What's the point of then making the rest of the roads in there regular streets? Private roads by themselves are insufficient to prevent routing though a campus. I have confirmed that at the NASA campus discussed here.
I do not believe that this is a case of breaking the turn restriction to avoid multiple segments of private streets, but rather a case of breaking the turn restriction to avoid a route with an extra 37 segments of streets, primary streets, ramps, minor highways and freeways.