The literal meaning of this poem by Robert Frost is that a traveler comes to a fork in the road and needs to decide which of the path to be selected out of 2 ways.
After mental debate the traveler selects the road that is traveled least. The poem describes the tough choices people make undergoing any situations and finally they have to come out with a decision.
The traveler was full of regret because he couldn’t travel both the roads. Right and wrong choice will have significant impact of his life