There are two problems here. A license, at least in the US, is required to drive anywhere but on your own or your parent’s private property. You can’t even drive without a license on the public road that goes between pieces of that property.
It *may *be that you could practice on my property without a license - I’m not sure of the law in that case - but you could only do so with my permission. Pasture is just as much private property as your neighbor’s lawn. Trespassing is trespassing whether there are signs posted or not. In fact, the reason people put up signs is because of law breakers.
Driving on someone’s pasture is just like driving in someone’s cornfield. You are destroying property and damaging the owner’s ability to earn a living. It’s just not as obvious as it is when you mow down corn with your car. Pastureland is actually quite fragile. That’s why you can still see parts of the “Oregon Trail” out here - the prairie has *still *not recovered.
Don’t go trespassing to learn to drive. Then you will have broken two laws.
And, yes, I would call the law if I saw you in my neighbors’ pasture.
Ruthie, stickler for property rights