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Highway Functional Classification Concepts, Criteria and Procedures

Table of Contents

List of Tables

Table 2-1: Relationship between Functional Classification and Travel Characteristics

Table 3-1: Characteristics of Urban and Rural Arterials.

Table 3-2: Characteristics of Urban and Rural Minor Arterials.

Table 3-3: Characteristics of Major and Minor Collectors (Urban and Rural).

Table 3-4: Characteristics of Urban and Rural Local Roads.

Table 3-5: VMT and Mileage Guidelines by Functional Classifications - Arterials.

Table 3-6: VMT and Mileage Guidelines by Functional Classifications - Collectors and Locals

Table 4-1: Example Massaschusetts Roadway Functional Classification Table.

Table 4-2: Key Milestones for Development and Submittal of the Functional Classification Network

Table 5-1: Oregon DOT's Classification System.

Table 6-1: US Census Bureau Urban Area Types Defined by Population Range.

Table 6-2: FHWA Urban Area Types Defined by Population Range.

Table 6-3: Key Milestones for Development and Submittal of Adjusted Urban Area Boundaries

Table 6-4: Geospatial Database Required Attributes.

List of Figures

Figure 1-1: Principal Arterial - Other Freeways & Expressways.

Figure 1-2: HOV Lane on Interstate 95 in Woodbridge, VA.

Figure 1-3: Other Principal Arterial in California.

Figure 2-1: Aerial View of the Eisenhower (and Johnson) Tunnels along I-70, west of Denver, CO

Figure 2-2: View from Inside the Eisenhower Tunnel

Figure 2-3: Aerial View of Eisenhower Court, North Platte, NE.

Figure 2-4: Aerial View of Eisenhower Street in Carrolton, TX.

Figure 2-5: Illustration of Access-Mobility Dynamic.

Figure 2-6: Collector Example.

Figure 2-7: Example of Access Points.

Figure 2-8: Functional Classification Map of Giddings, TX and Surrounding Unincorporated Territory

Figure 2-9: Schematic Illustrating the Concept of Continuity.

Figure 2-10: Example of an Exception to the Connectivity Guidelines, Wings Neck Road, Bourne, MA

Figure 2-11: Example of an Interstate Spur Terminating at a City Street in Holyoke, MA

Figure 3-1: Example of Interstate.

Figure 3-2: Example of Other Principal Arterial

Figure 3-3: Example of Urban Minor Arterial

Figure 3-4: Federal Functional Classification Decision Tree.

Figure 3-5: Map of an Urban Area's Roadway Network.

Figure 3-6: Map of a Rural Area's Roadway Network.

Figure 3-7: Worcester, MA Roadway System.

Figure 3-8: Classification Overlap.

Figure 4-1: Minnesota DOT Functional Classification Change Request Form.

Figure 4-2: Example of Shifting due to Inconsistency between Tabular Event Data and Geospatial Data

Figure 4-3 Sample Roadway Color Scheme.

Figure 4-4: Good-Practice Timeframe for Functional Classification Updates in Months

Figure 5-1: "Table 5.1 Roadway Categories" from the Smart Transportation Guidebook, March 2008

Figure 5-2: Community Arterial Roadway Design Guidelines in Smart Transportation Guidebook

Figure 5-3: Idaho DOT's Proposed Redefinition of Functional Street Classifications.

Figure 5-4: ITE Report: Context Sensitive Solutions in Designing Major Urban Thoroughfares for Walkable Communities.

Figure 6-1: Prototypical Urban and Rural Areas.

Figure 6-2: Example of Roadway Coinciding with Adjusted Urban Area.

Figure 6-3: 2000 Census Urban Cluster and Urbanized Areas (Ohio and Vicinity).

Figure 6-4: Example Original Urban Area.

Figure 6-5: Example Single Contiguous Area.

Figure 6-6: Example Area Expanded to Cover Air Force Base.

Figure 6-7: Example Area Expanded to Include Industrial Area.

Figure 6-8: Example Boundary Adjusted to Align with Major Roadway.

Figure 6-9: Example Boundary Adjusted for Simplicity.

Figure 6-10: Good Practice Level of Procedural Steps for an Urban Boundary Update Process

Updated: 10/7/2013
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