Gate ideas to prevent cars from crashing into my house?

Okay, I live in the country on a 90 degree curve approximately 50 feet from my gate entrance. The local dope heads and drunks like to use the road as a pass through and as expected they tend to fall asleep, get high, or whatever and crash either right off the curve into my fence or hit my steel farm gate which I've had to replace and remount repeatedly. I tried going to the county and DPS with NO luck whatsoever! This last moron fell asleep and literally knocked down 2 creosote railroad ties, 5 creosote 2 x 6's, one 12" creosote post, and warped a $200.00 steel farm gate. So I want to build a fence that their dumb behinds will bounce off of, I'm concerned that one will actually make it through and hit my house. I was thinking of using 4 railroad ties (mounting them 8 inches apart for a rolling steel gate) cemented and rebar'd in, approximately 8 foot across from each other and mounting the the angled entrance part of the gate with 2 more railroad ties and drilling them, then placing 8 rows of rebar. Does anyone think this would work? I would greatly appreciate any advice. Did want to mention I use railroad ties because 4 pickups have hit them and they bounce off! This last truck literally knocked them completely up and out of the ground. Thanks for your input!

PS: the county all but told me to piss off when I asked for regular patrols and the State Troopers said they don't know what I could do.