Scale efficiency provides the measurement of the relative production ratio of a terminal’s current input level compared to its optimal level. However, it neither shows whether a terminal is oversized or undersized, nor does it indicate how much the input level should be adjusted to obtain the optimal scale. The degree of returns to scale for a particular terminal allows us to determine the level of the terminal size and show how to obtain its optimal scale (Fare et al. 1994; Battese and Coelli 1995). The objective in this section is to identify general strategies that correspond to terminal container investments.