Hi cambs-dave
Really pleased to hear that hog family is safe. Very sad to hear about the roadkill. You may want to enter it onto the Big Hedgehog Map – accessed via Home Page of Hedgehog Street. That way, at least it might be of some help to other hogs in some way.
The only way to stop hogs having to cross roads, it seems, is to encourage everyone to link their gardens and create hedgehog highways. That way the hogs have access to more habitat without having to cross the roads. Not always easy, I know, but worth a try.
I hope the hog family continue to do well. Must be lovely having them to watch.