Roadway Functional Classification System

Functional classification is the process by which the nation's network of streets and highways are categorized according to the type of service they provide. It represents the function of a roadway based on several factors including volume of traffic and types of trips served. 

Functional classification is used in transportation planning, roadway design and the allocation of federal roadway improvement funds. It was introduced by the Federal Highway Administration in the late 1960s, which developed federal guidelines for local governments and planning organizations to use in maintaining the functional classification system in their own jurisdictions.

Functional Classification Process

As the Metropolitan Planning Organization for the Kansas City region, it is MARC's responsibility to develop and maintain the functional classification system of roadways within its planning boundaries through coordination with local cities, counties and the state departments of transportation.

Functional Classification Process FHWA's Guidance on Highway Functional Classification Concepts, Criteria and Procedures PowerPoint: Functional Classification System overview and process for changes
Layer Title
Summer 2025 Call for Changes schedule
Table
Month Process
June Summer call for changes opens June 30.
August Deadline to submit changes to MARC is Aug. 1.
August-October MARC staff and state DOTs review requested changes for compliance with federal classification guidance. Recommendations are shared with each requesting jurisdiction with requests for comments and revisions.
November Final recommendations presented for approval to the Highway Committee, Total Transportation Policy Committee and MARC Board.
November-December Final Board approved changes submitted to the state DOTs, who submit changes to the Federal Highway Administration.

Functional Classification map & resources

Current Functional Classification map
Functional Classification Tool Portal Field Descriptions
Spring 2024 requested changes to the Functional Class System
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