Have you considered creating space for a "Y" turn. More like a "T" space to drive into and then have a space to back into and then turn back the way you came. We must use this type of turnaround both for our semi and RV's at our business.
We are building a motel near a hwy with rumble strips. Building will be 150' from road with C-store in front. Goal is to insert dead air space between outside surface and inside room, to reduce the "drumhead" effect of a solid wall.
Thanks