Operational analysis, typically focusing on current or near-term conditions,
involving detailed inputs to HCM procedures, with no or minimal use of
default values;
. Design analysis, typically using HCM procedures to identify the required
characteristics of a transportation facility that wil allow it to operate at a
desired LOS, with some use of default values; and
. Planning and preliminary engineering analysis, typically focusing on future
conditions, where it is desired to evaluate a series of alternatives quickly
or when specific input values to procedures are not known, requiring the
extensive use of default values.