Rail-supported trailer apparatuses, systems, and methods

A method of moving material on a series of trailers, the method comprising:

• supporting a first trailer from a beam-type rail by a single wheel bracket attached to the trailer, the first trailer having a first coupler attached to a first end and a second coupler adjacent to a second end;
• coupling the first coupler to a second trailer;
• coupling the second coupler to a third trailer;
• coupling the material to at least one of the first trailer, the second trailer, and the third trailer;
• and
• moving the material along the series of first, second, and third trailers.

A trailer rotatably attached to a beam-type rail, the trailer comprising:

• a first wheel having a first axle attached to a single wheel assembly to support the trailer on the beam-type rail;
• a second wheel having a second axle attached to the single wheel assembly to support the trailer on the beam-type rail;
• and
• a trailer body hanging from the beam-type rail only by the single wheel assembly, the trailer body having a first end and a second end and attached to the wheel assembly near the first end, the trailer body having a first coupler at the first end and having a second coupler at the second end, the first coupler to attach the trailer to a second trailer and the second coupler to attach the trailer to a third trailer such that the second end of the trailer rotates down away from the beam-type rail when the trailer is not attached to the second trailer and is not attached to the third trailer.