Motor Vehicle Act regulations

My bad if I posted this in the wrong subforum.

Can someone point me in the right direction or just drop some info here? What’s the deal with the Motor Vehicle Act regarding riding an unregistered bike on the roads in Poland?

Look, I want to pick up a dirt bike—something 125cc max. Just want to ride through the woods and local trails near my place while the weather is actually decent.

I’ve had my driver's license since 2005, but honestly, that doesn't matter because I have zero intention of registering the bike or throwing money away on paperwork. I won't be hitting the main highways. But what happens if the cops catch me out in the middle of nowhere? Being in a rural border area, you never know when a patrol might roll up.

Am I screwed if they pull me over? Even if I'm not technically "on the road," since the bike isn't registered and the engine size is way higher than what my license allows?

The law isn't about how good—or bad—the road is; it’s strictly about how you handle the vehicle. I think that speaks for itself.

Well, if you happen to be riding a hybrid bike, I suppose your best bet might be to just head straight through the woods!

Are you planning on riding that bike exclusively in Poland? The real headache is going to be how you actually intend to get it over there. You mentioned being in a border region—wait, aren't you actually in Russia? If you're in Russia and somehow manage to sneak it across the border, I doubt the police will give you much trouble.
If you do get pulled over, just pretend you’re drunk and start shouting "harasho, harasho!" They won't touch you; that's just how the Russians act in the movies.

One might intend to navigate the roads in Poland without necessarily being a resident of the country itself.
Of course, perhaps the driver is a Pole—though I suppose we should leave that conclusion to them—but the condition of Polish roads occasionally seems entirely disconnected from the reality of living in Poland...

In truth, Poland and its specific road networks aren't particularly relevant to a truly skilled driver....