For as long as I can remember living in Maine for 50 years, we have had unique road signs at town lines within the state, but they're slowly going away.
If you've ever been caught in traffic on the Maine Turnpike crossing over the Piscataqua River Bridge between Maine and New Hampshire, this is good news.
The snow has to go somewhere. So if you shovel your driveway and then clear a space to the left of your driveway, when the plow circles back around, it will fill it!