The simplest form of track layout for car or trip loading. In this system, the
track can merely be extended down the heading, or it can be turned right or
left, and then turned back, U-fashion, in an adjacent heading. The major
disadvantage is that trips must come out the same way they go in, meaning
increased loss of time unless the changing track is very close. Coal Age, 3
Source:
Dictionary of Mining, Mineral, and Related Terms
