Is it against the law for a Tractor Bulldozer that not yours be parked in your driveway?
Annoying, but the problem has in fact been solved. It may be that the truck pulling the trailer to remove it had broken down, not the bulldozer itself. Given the situation on the roads, they ducked into the most available driveway they could find so as not to block the road for the plows and emergency vehicles. It was technically wrong, and they likely did it hoping you were actually away. A lot of people are off for school vacation or tucked away for the bad weather and shutdowns. Given their choices, this was one they likely made for public safety, and that does take precedent. It wouldn't have made things any better had they parked out in front of your house and blocked traffic and the plows, so consider it your contribution to the overall hideous situation. You didn't suffer any real monetary damages, and no judge is going to side with you for now. Everything's inconvenient - you were really lucky they came and got it out of your way so quickly. That in itself is a miracle. Some people in Boston would be overjoyed just to have a sighting of that equipment, even if it was only close to their road...
Depends on the country you live in and the laws UK residential areas do not allow commercial vehicles parked on driveways
Depends on WHY there is a Tractor Bulldozer in your driveway no matter who it belongs to !