In order to figure out why not most of current carpooling
systems or applications are practically functioned as their
theoretically expected, it is considerable to analyze the
existed carpooling related mechanisms and trail systems.
Nevertheless, carpooling is a sort of multi-factors service; it
is complicated to be parsed without a structured analysis. For
this reason, a CRS model as detailed in the next paragraph is
first presented to help classifying the selected 31 literatures