Good for you for being an official volunteer. I asked about it at my two closest & most frequented trails, but as it turns out they're both either privately owned &/or maintained by paid employees. I'd still like to help out if I could, if for nothing else then just to recommend some more interesting features.
As for the guy who busted his face, completely his fault. We can't blame the gov't for causing lethal car accidents just because they took the initiative to create freeways, can we? All the same, I hope he's okay.