The smallest truck turn around you can build is a flared tee off the driveway. It's nice if the tee is on the driver's side of the driveway since they can easily see where the back of the trailer is if it is a van trailer. Flatbed shouldn't matter as much. The tee needs to be about 60' deep, long enough to get a 53' trailer completely in.
So, from one side of your 60' driveway area, you could extend a tee off that about 30' deep and about 80' out from whatever stops the front of the truck (house?).
It may be illegal for the truck to back onto your road from your driveway without a police escort. If you go that way, at least be prepared to stop traffic for the driver.