Use with the following template, adapting width as needed (rounding to multiples of 5 is ok):

{{Annotated image |image=Road-hierarchy-channelization.svg |image-width=250 |width=205 |height=195 |caption=text}}

This diagram was inspired by these sources, which have been seen in various introductory materials on the subject:

• FHWA (1989) "Concepts, Definitions, and System Characteristics" in Functional Classification Guidelines, Washington, D.C.: FHWA Figure II-1.
• FHWA (2011) "Highway Infrastructure" in Out Nation's Highways, Washington, D.C.: FHWA Figure 1-1.
• Xu, Yaoci. The choice of road network depends on the specific problem to be solved (in Chinese). Sohu. Traffic Research Society. Archived from the original on 1 May 2025. Retrieved on 1 May 2025.

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