The Next Generation Transportation Road Network

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The Next Generation Transportation Road Network

• Ron Cramer
• Digital Data Technologies, Inc.

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Create it once, use it many

• Create it once
• Use it a bunch
• And maintain it

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CREATE IT ONCE

• Create it once ? Use it a bunch ? And maintain it

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Create It Once

• Location Based Response System (LBRS)
• State-level plan for every Ohio county
• Create spatially accurate street centerlines with
  field verified site-specific address locations,
  with emphasis on linear referencing/mileposts

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LBRS Benefactors

• Multipurpose data designed for cross departmental
  use
• Federal, county local government GIS
• State Departments of Transportation
• Assessors, Engineers and other elected officials
• Emergency Response
• The Next Generation Road Network that supports
  advanced applications contains these attributes

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Centerline
Address
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Field Verification Exposed Non-Matching Address
Data
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Geocoding Should Be Used as a Last Resort

• 9-1-1 call from 14205 Dunton Rd.
• Address range is 12031 to 15209
• Imagine if you had an emergency and were awaiting
  a response

Geocoded location
ACTUAL location
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Geocoding in Urban Areas

• Breaks down significantly in or around
• Apartments, condominiums
• Mobile Home Parks
• Strip malls
• Assisted living communities
• Wherever there is a focus of multiple address
  units in a small geographic area or on a single
  parcel

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Urban Geocoding

• 9-1-1 call from 1735 Hobson Rd
• Address range is 1500 to 2299
• True address location is 500 feet to the North on
  an apartment complex access drive

ACTUAL Location
Geocoded Location
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ROI Improving 9-1-1

• Each LBRS address point utilizes all three
  methods for locating an address
• Situs (house number)
• Coordinates
• Milepost/log points
• Our goal
• To pinpoint and route 9-1-1 distress calls to an
  exact, field-verified location 100 of the time
• The LBRS dataset is saving lives

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ROI Crash Data Analysis

• LBRS enables more crash data to be accurately
  mapped because there are more identifiable
  locations
• Prioritizes critical road segment management
  through collection of various attributes
• Addresses, landmarks, local roadway network
  mileposts
• Introduces potential incremental roadway safety
  funding opportunities
• Many state DOTs struggle to maintain accurate
  local roadway inventories
• Identification of unreported roads
• Updating of newly created municipal roads
• DOTs need to locate high hazard locations OFF the
  state system

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A Road with Many Names
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ROI Crash Data Analysis

• DDTI Client Case Study
• DOT reported 190 traffic accidents in a county
  along two major corridors
• After comparing crash data with LBRS centerline
  information, county was able to locate more than
  550 crashes
• LBRS road centerline data allowed reported
  crashes with incorrect street names or addresses
  and various other inconsistent reference points
  to be mapped to the correct, single point
• Most urban safety studies spend about 2,000 to
  identify and locate all traffic crashes at a
  given intersection
• Cost is associated with trying to find all the
  crashes based upon multiple location methods
  (street- intersection, address, route
  number-milepost, etc.)
• When LBRS data is available and used to scrub
  crash location data, and resolve alternative
  location methods to a lat-long, the cost to do
  the same crash study is about 150 less than
  10. 
• Leaves more available funds for correcting the
  problem
• Also introduces incremental roadway safety funding

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Additional ROI

• Sales Tax
• Collection disbursement of internet sales tax
• 130 p.m. Thursday, October 5 Streamlined Sales
  Tax and USGS Liaison Concurrent meeting
• LUCA
• Approximately 300 billion in federal grant money
  distributed to the state local level
• Direct tie to annual population estimates
• 3D Surface Models for disaster planning
• Boards of election
• Numerous state-level departments

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USE IT A BUNCH

• Create it once ? Use it a bunch ? And maintain it

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Use It A Bunch

• AccuGlobe Desktop 2007
• DDTIs GIS software platform
• Public launch date November 15, 2006
• Initial introduction November 2003 as a free
  internet download
• Registered user base has grown to more than
  25,000 users in over 180 countries
• The foundation on which all products and services
  were built
• Offers GIS community a vehicle that enables
  others to view/analyze data
• Built-in web updater to maintain latest software
  versions, most accurate data

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AccuGlobe Web Updater
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AccuGlobe Extensions

• AccuGlobe Data Explorer
• Provides customized integration and viewing of
  databases in a GIS environment for the general
  user
• Enables data dissemination platform within local
  government
• Maximize ROI by increasing user base
• Eliminates multiple entities accessing, changing,
  storing data
• Updates disseminated to users local intranet via
  Web Updater

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AccuGlobe Extensions

• AccuGlobe 9-1-1 Dispatch/Mobile/Web

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Routing Quality Road Network

• Good routing requirements
• Good road network data
• Good routing software
• Must-haves
• Proper road names
• One-way attribute
• Divided roads have separate lines
• No intersections at overpasses
• Speed limits
• Other traffic related information
• Nice-to-haves
• Bridges culvert locations
• Traffic signals, stop signs, yield signs
• Turn arounds
• School zones
• Real-time traffic information

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Routing Example

• Effect of road network attributes
• One way
• Speed Limits

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Routing Example

• Effect of road closures

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Divided Road
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Real World Road Closure

• Field verification is necessary
• Locates routing barriers that would otherwise go
  undetected

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Real World Road Closure

• Only field verification would reveal this road
  segment as impassable

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AND MAINTAIN IT

• Create it once ? Use it a bunch ? And maintain it

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Example Issues With Addressing

• 80 of data has a spatial component (address)
• Maintenance is the key to upholding quality and
  accuracy of evolving data sets
• PROBLEM While parcels may be maintained by one
  department at the county-level, multiple
  addressing authorities are scattered throughout
  local government
• Data coordination/consolidation across all
  agencies is needed

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Data Maintenance Solution

• Maintenance software local authorities can use to
  input new roads addresses

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Maintenance

• Data integration and dissemination

COUNTY
TOWNSHIP
STATE
CITY/VILLAGE
Trustees
E9-1-1
Zoning
Engineer
Other/Etc
Other/Etc
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Digital Data Technologies, Inc.

• www.ddti.net
• 1.888.800.4003

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Digital Data Technologies, Inc.

• Create it once
• Use it a bunch
• And maintain it