n "The Road Not Taken," I believe the speaker of the poem took the more difficult road. He took the road less traveled by. This means he took the road with less people; therefore, his journey had to be more lonely.
He took the road that the majority of people avoid.
In the road less traveld by, there would be more bumps in the road and more brush and undergrowth. There would be more obstacles as far as trees and nature's natural growth.
In my classes, I teach my students that the speaker took the less traveled road. This meant he took the road which requires much more studying. The majority took the road I call the "party" road. Students can choose the "party" road and end up without a degree. It is easy to hang out with friends and party and have a good time. It is more difficult to choose isolation that comes with hours of studying.