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Highway Functional Classification. PEAR Workshop September 2009 Spencer Stevens, Planning Office Joe Hausman, Office of Highway Information Ed Christopher, Resource Center . Highway Functional Classification. What? Why? How? Relationship to Federal-Aid Relationship to Design

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highway functional classification

Highway FunctionalClassification

PEAR Workshop

September 2009

Spencer Stevens, Planning Office

Joe Hausman, Office of Highway Information

Ed Christopher, Resource Center

highway functional classification2
Highway FunctionalClassification
  • What?
  • Why?
  • How?
  • Relationship to Federal-Aid
  • Relationship to Design
  • October 2008 HPMS memo
what is the function of a road
What is the function of a road?
  • Provides mobility (arterials)
  • Provides access (locals)
  • Provides both (collectors)
why classify roads
Why classify roads?
  • There are approximately 4,000,000 miles of roads in the U.S.
  • Some are more “important” than others
why classify roads9
Why classify roads?
  • Helps determine which level of government has responsibility
  • Influences design
  • Affects how they are funded
  • Impacts Federal-Aid
highway functional classes rural miles
Highway Functional Classes (Rural Miles)
  • Principal arterials 132,451 (4%)
  • Minor arterials 137,875 (4%)
  • Major collectors 434,090 (14%)
  • Minor collectors 272,047 (9%)
  • Local 2,096,837 (68%)
  • Total 3,071,331
highway functional classes urban miles
Highway FunctionalClasses (Urban miles)
  • Principal arterials 76,033 (9%)
  • Minor arterials 90,475 (10%)
  • Collectors 89,310 (10%)
  • Local 628,369 (71%)
  • Total 884,187
federal aid
Federal-Aid
  • National Highway System
    • Principal arterials
  • Surface Transportation Program
    • Arterials
    • Urban collectors
    • Rural major collectors
slide17
How?
  • Group population centers and major travel generators
  • Identify neighboring centers
  • Connect the largest directly
  • Connect the next group to the major centers
slide18
How?
  • Considerations:
    • Arterials integrated network
    • Spacing
    • Changes at urban boundaries
    • Trip length
    • Diminishing returns
urban boundaries
Urban Boundaries
  • Urban clusters
    • Census block population density
    • Secondary criteria
  • Urban Places
    • Political boundaries
  • Adjusted boundaries
design considerations
Design Considerations
  • AASHTO’s Policy on Geometric Design of Highways and Streets 2001 (Green book)
  • Arterials – promote mobility and restrict access
  • Locals – promote access and limit mobility
design features
Design Features
  • Speed
  • Levels of service
  • Alignment
  • Width
  • Clearances
  • Grades
urban features
Urban Features
  • Parking
  • Lighting
  • Curb & Gutter
  • Sidewalks
  • Utilities
access control
Access Control
  • Full control
    • Freeway
  • Partial control
    • Medians
    • Grade separation
    • Signal timing
    • Limit driveways and entrances
access control methods
Access Control Methods
  • Land use ordinances
  • Geometric design
    • Medians
    • Spacing median openings
    • Frontage roads
  • Direct vs. indirect access
  • Single vs. multiple access
hpms reassessment
HPMS Reassessment
  • October 14, 2008 memo
  • Recommends revisions to highway functional classification guidebook
    • Downplays the Urban/Rural distinction
  • New HPMS classification schema used for 2010 data reporting
  • Does NOT change any Highway Functional Classification Guidance or practice
summary
Summary
  • What is the function of roads?
  • Why classify the roads?
    • Example of impact on design
  • Which roads are eligible for Federal-Aid?
highway functional classification concepts criteria and procedures
Highway Functional Classification Concepts, Criteria and Procedures
  • It is just a guide
  • Varies in practice by state
  • Functional Class boundaries are not rigid
  • Some states develop supplemental criteria
  • www.fhwa.dot.gov/planning/fctoc.htm
slide31

Main Street

State University

Campus Loop

I-95

slide32

Census Urban Boundary

Industrial Blvd

Industrial Park

slide33

The village of Mesa

Mesa View Road

Red Rock Heights

Route 36

slide34

Resource Page

http://www.edthefed.com/fclass/

yepper we can assist you
Yepper – We Can Assist You?

SelectHere

http://www.dot.state.pa.us/Internet/Bureaus/pdPlanRes.nsf/PlanningAndResearchHomePage?OpenFrameset

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