fjdave,
Aren't regulations great !
Over here, we have cars with 5 mph bumpers, designed to protect us from hitting anything.......... if we ever should drive that slowly. Maybe that's why the little-old-ladies drive so slow--they "get" the math behind the design.
I can see a need for a bullbar out in the countryside where animals roam freely over large distances.
Shouldn't have a real need in a metropolitan city, though. A rancher from out of town is expected to slow down and follow the city traffic rules.
It seems that the existing regulations shouldn't have been changed unless there was a problem. So, are there a number of angry drivers just mowing down folks crossing city streets? Or are there "wild pedestrians" wandering the vast open spaces and outback? The style of bumper is your least worry. You couldn't make a bumper system soft enough to allow survival after being hit by a 4,000 pound projectile.
Years ago in the American West, when wild animals roamed the countryside, we used to have "cow-catchers" mounted to the front of locomotives, that theoretically scooped up the animal and flung it to either side of the train tracks, (just not on TOP of the train !) So..........maybe you need cow-catchers on your vehicles, instead of bull-bars, at least for city driving ! Of course, you then would need another regulation: for rubber sidewalks and curbs. And then require each city and town to install padded nets to catch the ones that bounce ! Oh...... and rooms with padded walls for the people who design such regulations.
Now, now.......Big Brother will take care of you.