Status
of the Nation's Highways, Bridges, and Transit:
2002 Conditions and Performance Report
Exhibit 2-6:
Highway Functional Classification Hierarchy
Exhibit 2-6 is an
organizational chart, starting with "All U.S. Roads", and dividing into
two major branches, "Rural" and "Urban." The first major branch,
"Rural," is divided into three sections, "Arterials," Collectors,"
and "Local." "Arterials" is further divided into "Principal"
and "Minor." Attached to "Principal" are two labels, "Interstate"
and "Other Principal Arterial." "Collectors" is divided into
"Major" and "Minor." The second major "Urban" branch
is divided into three sections, "Arterials," "Collectors,"
and "Local." The "Arterials" branch is subdivided into "Principal"
and "Minor." Attached to "Principal" are three labels, "Interstate,"
"Other Freeway and Expressway," and "Other Principal Arterial."
