IrisMoon is right. But some names may have been lost in oral tradition, and some aspects relegated to old wives' tales.
I have read the (supposedly) if a person wants to meet "the devil" (as some more popular tales have come to term it) at the crossroads, it needs to meet many specific requirements.* There's a legend in the Blues about a specific intersection in Mississippi, where a festival is now held annually.
But ultimately the crossroads is symbolic more than anything else. It is about the opportunity to change one's direction in life. It's about profound personal sacrifice. It is, in my opinion, one of those great legends of real magic. A person goes on a journey to begin personal change; they find their crossroads, and they do whatever it takes to turn the corner in stead of going straight. Whether they go (symbolically) right or left will have a vastly different effect. One leads to success, the other failure. But moving straight ahead yeilds more of the same life, so the traveler chooses to turn.
*some of the things I remember specifically: the road 'must' be unpaved, very isolated, possibly run in the four cardinal directions, or at least at right angles, and be as uniform in each direction as possible. It cannot seem to offer change in itself; the road is the unknown and unlimited potential.