MUTCD 11th Edition (2023)
Section 2E.11 — Interchange Classification
Manual on Uniform Traffic Control Devices, Section 2E.11. Standards, guidance, options and support statements, with figures and cross-references.
Section 2E.11 Interchange Classification Support: 01 For signing purposes, interchanges are classified as major, intermediate, and minor. Minimum letter and numeral sizes based on interchange classification are contained in Tables 2E-2 and 2E-4. Descriptions of these classifications are as follows: A. Major interchanges are subdivided into two categories: (a) interchanges with other expressways or freeways, or (b) interchanges with high-volume multi-lane highways, principal urban arterials, or major rural routes where the volume of interchanging traffic is heavy or includes many road users…
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