Describe the road the speaker chooses.

The road chosen is the scarier choice of roads. It does not have any "road signs" to tell the traveler where the road is going, how easily it is to travel, or directions to the destination. There is no mileage markers to tell the traveler how far she or he has gone or how close he or she is to a desired destination. The traveler doesn't know if the road provides access to anything that she or he will need on the way to the place that will cause the traveler to be happy and content with her or his journey.
The road is a metaphor for choosing to follow one's heart in life, even if there are risks and unknowns involved.

Firstly, it's important to understand that "the road" in "The Road Not Taken" is metaphorical—not exactly a literal road, though the poem may have been inspired by an actual walk through a forest. The road that the narrator has taken is "the one less traveled by." The narrator describes it in relation to the first as follows:

And be one traveler, long I stood
And looked down one as far as I could
To where it bent in the undergrowth;
Then took the other, as just as fair,
And having perhaps the better claim,
Because it was grassy and wanted wear;
Though as for that the passing there
Had worn them really about the same,
And both that morning equally lay
In leaves no step had trodden black.
Oh, I kept the first for another day!

The first path seems attractive, due to how it bends "in the undergrowth," making it shadier and more mysterious. However, the narrator takes the other, which is still "grassy and wanted wear," indicating that few have trodden on this path. This description of the second road is the reason why many people read the Frost poem as championing non-conformity. I would say that they are not exactly wrong. It seems that the narrator chooses the second path because it seems to offer something new. However, on a closer look, he sees that they are worn "about the same" and both are covered in freshly fallen leaves. He imagines that he will have a chance to travel on the first path on another day, but there is never time for that opportunity.
The poem is a meditation on choices and how we cannot enjoy all of the opportunities that are offered to us in life. The choice of one thing guarantees the loss of another.