Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Office of Planning, Environment, & Realty (HEP)
Planning · Environment · Real Estate

HEP Events Guidance Publications Glossary Awards Contacts

FHWA Functional Classification Guidelines

Contents

Note: This publication was updated in 2013. This version is for archival purposes. For the current version, see http://www.fhwa.dot.gov/planning/processes/statewide/related/highway_functional_classifications/

Note:
Revised in 1989, this document was electronically scanned in April, 2000. The scanned image wa s processed through Optical Character Recognition software, the resulting text being formatted for the World Wide Web. Changes are restricted to:


Original page numbers are retained, providing easy reference back to the original document in hardcopy form. They also provide a convenient location on the page from which to link to another electronic page.

Section Links to electronic pages Original Hard Copy Page #
I Introduction I-1
II Concepts, Definitions, and System Characteristics II-1
The Concept of Functional Classification II-1
Area Definitions II-5
Functional System Characteristics II-8
Functional systems for rural areas II-8
Functional systems in urbanized areas II-11
Functional systems for small urban areas II-14
Special urban-rural identification II-15
Classification criteria for Alaska, Hawaii and Puerto Rico II-15
III Suggested Procedures for Rural, Small Urban Aarea and Urbanized Area Classification III-1
Introduction III-1
Classification Procedures for Rural Systems III-3
Identifying and ranking population centers and other travel generators III-3
Classification of rural systems III-6
Classification Procedures for Small Urban Areas III-14
Determine and map the urban area boundary III-15
Prepare road network map III-15
Identify and map land service characteristics III-15
Classify the highway and street network III-15
Classification Procedures for Urbanized Areas III-18
Determine and map the urbanized area boundary III-18
Map the road network III-19
Perform preliminary classification of the total arterial system III-19
Classify the final arterial system III-28
Classify the principal and minor arterial street systems III-28
Substratify the principal arterial system III-32
Classify collector and local streets III-34
Attachment 3 - Addendum  
Updated: 10/07/2013
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000