[IYAS9YAS]

What’s your stance? Should a guy operating a lawnmower on public roads while drunk get charged with a DUI?

No. Maybe drunk in public, or some other similar thing.

I look at it this way: A lawnmower is not a motor vehicle by definition, as it cannot be legally registered and operated on a highway - some states also require recreational vehicles (ATVs, Dirt bikes, snowmobiles, etc...) to have registration stickers for use on public land. Lawnmowers don't fit this category, either.

It may fall under a similar category as a farm implement that may be operated in short duration on the highway between fields. If there is a rule against that, or a rule against operating unregistered, self-propelled devices on the highway, then maybe.

[Lurkina.n.Learnin]

Woman gets DUI — for horseback ride - Criminal weirdness- msnbc.com

http://www.msnbc.msn.com/id/17953259/

Colorado cowboy pulled over for DUI on horseback | WCBD

http://www2.counton2.com/cbd/news/national/article/colorado_cowboy_pulled_over_for_dui_on_horseback/24268/

[Dan Nunn]

I agree. I always grimace when someone was sort of semi-responsible enough not to drive a car and gets hit with it anyway. Of course, a Segway would be a better idea than a lawnmower. We’ve got a guy in my town that does this and seems to have been able to get away with it.

[elkfersupper]

Bicycles and bicyclers have been given the same rights as motor vehicles in the U.S. They just don't have to be registered or insured and the operators get away with ignoring traffic laws.

Why should I obey traffic laws?