This is an interesting idea.
I live on a dirt road, in a not so populated area, but there are people using the main dirt road all the time.
I was thinking that once my hens start laying more than I can eat, I might just put a sign at the end of my road, but people would have to go a total of 4 miles to get to the house and back to the main road.
We know a lot of the people who live in the area, and of course they know us. I suppose there might be the occasional tweeker who might stop and steal the cash. I don't know, this requires some thought, but might be a good idea.