I imagine the people who need a lecture in public are the same ones who do not receive feedback/advice very well.

This is a problem on the receiving end.

> "hey, this is a dangerous road to walk on, would you like a lift to the end?"

You are advising an adult male to offer a ride to an adult female who he is a stranger to? She doesn't know him from Adam and should NOT accept that offer.

Not walking in the middle of the road and not accepting rides from strangers are things people should be taught as children.

Yup. On the other hand, I did some foolish things on the road myself when I was younger, and got an angry lecture from a stranger. I didn't take it well at first, but eventually realized he was right and I changed my ways.

> your chances

Maybe. Or maybe offering her a lift would have raised her suspicion that I had something other than her welfare in mind, and my point would have been lost. As it happened, when I said that suing me wouldn't have helped if she was dead, her look of surprise at that indicated I had made a point.