Road Network Data at USDOT

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Road Network Data at USDOT

• Steve Lewis
• Geospatial Information Program Manager
• USDOT/RITA/BTS

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The Problem Not Just One Network!

• National Highway Planning Network (FHWA Office of
  Environment and Planning)
• Freight Analysis Framework Network (FHWA Office
  of Freight Management and Operations)
• Highway Performance Monitoring System (FHWA
  Office of Policy)
• TIGER/Line (Various USDOT Offices)
• TeleAtlas (RITA/BTS)

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National Highway Planning Network

• Public Domain
• 455,000 miles (11.4 of total road miles)
• Routable
• Used to inventory and map the National Highway
  System and the Strategic Highway Network

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Freight Analysis Framework

• Public Domain
• 450,000 miles (11.25 of total road miles)
• Routable
• Used to model and flow truck traffic across the
  nation

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Highway Performance Monitoring System - Background

• Been around since the 1970s
• Collected from the State DOTs
• Database of highway conditions and performance
  information
• Used as input to investment models to determine
  highway funding needs
• Initially, no geospatial component
• Now, similar to TFTN

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Highway Performance Monitoring System

• Collected from the State DOTs
• Mileage Varies by State
• Not routable, maybe not even connected
• Used to map and analyze highway conditions and
  performance

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TIGER/Line

• Public Domain
• 4,000,000 miles (complete coverage)
• Not routable
• Used for some address matching and mapping

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TeleAtlas

• Proprietary
• 4,000,000 miles (complete coverage)
• Routable
• Used for routing, address matching and mapping

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Why Not Just One?

• Stovepipes. Surprised?
• Lack of a real alternative that meets all needs
• Public domain
• Routable
• Complete coverage
• Contains necessary attributes

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Old Contracting Proverb

• GOOD
• FAST
• CHEAP
• Pick any two!!

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Steves Road Network Proverb

• PUBLIC DOMAIN
• COMPLETE
• ROUTABLE
• Pick any two!!

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Why Not A Single Network That is All 3?

• No quick fix to get there
• Get rid of the stovepipes!
• Work with the State DOTs and NSGIC to develop
  from the ground up

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What Can NSGIC Do to Help?

• Rally the troops
• Work with your counterparts in the State DOTs
• Work with AASHTO, TRB, and UCGIS
• Work with your Federal Partners
• TFTN is an EXCELLENT start

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Resources and Funding