Landgate Roads

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• Landgate Roads
• WALIS Roads Working Group Presentation
• Marty Stamatis
• Manager, Geospatial Maintenance
• September 2009

www.landgate.wa.gov.au
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Roads Data / Database

• Current Environment - GREAT
• ArcInfo 7 Coverage environment utilising
  Librarian
• Data Repository
• Export facilities
• Topographic Database
• Topographic Geodatabase
• ESRI Versioned Multi-user Geodatabase
• ArcSDE 9.3.1, Oracle 10g
• ArcGIS 9.3.1, PLTS 9.3.1 JTX 9.3.1 (Out of the
  box solution)
• Some customised tools (e.g. Metadata interface)
• Database characteristics
• Four themes (Ground Surface, Cultural,
  Hydrography, Transport)
• 2D
• Persistent Identifiers
• Feature Level Metadata
• Incremental Update (time stamps)
• Uses Topology to manage spatial issues

www.landgate.wa.gov.au
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Business Drivers

• Fundamental theme of the Topographic Database
• Landgate manages an integrated roads dataset
• Data normally managed by different authorities
  (MRWA roads, LGA roads, DEC roads, tracks, etc.)
• Integral to the land development process
• Road Name assignment (Geographic Names Database -
  GEONOMA)
• Road Name extents (GEONOMA)
• Concept roads / Proposed roads / Surveyed roads
• SmartPlan, MapViewer and Valuation Services
  requirements
• Addressing requirement
• Mapping requirement
• Street Directory
• Travellers Atlas
• Touring Maps
• Web Products (future)

www.landgate.wa.gov.au
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Roads Project

• Roads Centreline Quality Improvement Project
  (RocQI)
• Update the spatial currency of the data
• Update the attribute currency of the data
• Resolve spatial structural issues (e.g. spatial
  mismatches)
• 3 year project (started late 2004)
• Precursor to migrating the roads data into the
  Topographic Database
• Pre-migration data preparation
• Currently in progress (scheduled completion date
  end of 2009)
• Whole-of-State approach to the data
• Minimisation of the GREAT tile structure 2500 -gt
  101tiles
• Attribute consistency check
• GEONOMA check
• Metadata reconciliation
• Inclusion of MRWA Road Number
• Data migration
• Scheduled completion date 1st quarter 2010
• User consultation

www.landgate.wa.gov.au
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Road Maintenance Status (State wide)
www.landgate.wa.gov.au
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Road Maintenance Status (South-West)
www.landgate.wa.gov.au
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Data characteristics

• Physical road (pavement) NOT the cadastral road
  centreline
• Data / Mapping centric NOT Asset Management or
  In-car navigation centric
• Addressing requirements
• Property Street Address (PSA) and Rural Street
  Address (RSA)
• Approved name
• Need for Driveways (for RSA)
• Starting point for RSA number
• Building linked to address
• Data / Mapping requirements
• A Network
• A set of contiguous lines that represent the
  centrelines of the as-built roads. The network
  can be used to determine the shortest linear
  distance/route between any two points on the
  network.
• Hierarchies
• Freeways/Highways/Mains both MRWA centric and
  Mapping centric
• Mapping Classifications

www.landgate.wa.gov.au
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Data characteristics

• Data / Mapping requirements
• Concept roads / Proposed roads / Surveyed roads /
  as built roads
• Road Status
• Operations
• Relegated
• Closed
• Road Access Rights - information for road
  custodians and end users
• DEC requirements (e.g. DEC management access,
  DRA access)
• Public vs. Private
• Road Custodians
• MRWA
• LGA
• DEC
• Inclusion of other agency data
• DEC roads (Topographic Database contains some DEC
  roads, additional roads will be added as DEC
  complete their road inventory)

www.landgate.wa.gov.au
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Data characteristics

• Data / Mapping requirements
• Traffic Flow Direction in the model but not
  populated
• Speed Limit not in the model
• Turning Restrictions not in the model

www.landgate.wa.gov.au
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Road Segment Feature Class and Sub Types
www.landgate.wa.gov.au
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Road Segment Feature Class
www.landgate.wa.gov.au
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Road Segment Feature Class Domains
www.landgate.wa.gov.au
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Land Development ProcessWhen does a road become
a road
Land Developer
Other Agencies
Submits a proposal
Via ROMAN
MRWA
Local Government
Planning Department
Approval Road Number allocation
Approval
Landgate Geographic Names and Cadastral Database
DEC (Improved roads)
Improved roads (spatial/attribute)
Name Approval, Cadastral surveys
TOPOGRAPHIC DATABASE
replace
replace
Survey Approved Name with better spatial
As Built Approved Name, spatial that matches
aerial image
Concept Approved Name and sketch spatial
www.landgate.wa.gov.au
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Shared Data Maintenance Virtual Desktop
Master Database
www.landgate.wa.gov.au
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Routable Road Centreline Network considerations

• Things to consider
• Who is and what are the drivers for the dataset?
• Would the requester be prepared to pay for the
  building and maintenance of the dataset?
• What is the minimum requirement of the road
  network?
• Spatial requirements?
• Attribute requirements?
• Can we identify the essential attributes vs. the
  nice to have ones?
• Who is the custodian of these attributes?
• What is the degree of difficulty associated with
  providing the attributes?
• What is the degree of difficulty with maintaining
  the attribute?
• How do we minimize / eliminate duplication in the
  Roads space?
• Is there a need for multiple datasets, short term
  and longer term?
• How do we better synchronize multiple datasets?
• Are there any legal issues that need to be
  considered?
• What is the implication if we gat a Speed Limit
  wrong?

www.landgate.wa.gov.au
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SKM Routable Road Centreline Network - Data
StudyRecommendations

• Ensure that the development and maintenance of a
  RRCN will deliver tangible business benefits
  which outweigh costs
• Undertake a further, more detailed assessment to
  more closely define the requirements, costs and
  practicality of developing and maintaining the
  dataset
• Explore potential business models for developing
  and maintaining the dataset in partnership with
  the private sector
• Develop a rigorous business case which
• Defines the costs of developing the dataset
• Defines the maintenance costs (based on a formal
  and well-documented maintenance process)
• Confirms the business benefits to EM agencies
• Confirms what can realistically be delivered by
  the dataset, as compared to expectations which
  agencies may have for its reliability
  (particularly for EM use)
• Defines realistic market opportunities for
  providing access to the dataset to the private
  sector, potential market value and revenue
• Carefully assess the maintenance implications
  prior to the development of the dataset
• Define a practical and achievable maintenance
  process which ensures that the required elements
  are supplied by custodians on a regular basis
• Ensure that there is a genuine commitment by
  custodians of the required elements which
  demonstrate business benefits to them
• For local government develop a realistic
  maintenance process which considers a range of
  options (these could include goodwill, shared
  maintenance mechanisms, funding for maintenance
  or legislative change)
• Assess the opportunities for shared maintenance
  of the dataset (for example between WAPS, FESA,
  MRWA and DLI)

www.landgate.wa.gov.au
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SKM Routable Road Centreline Network - Data
StudyRecommendations

• Improve the maintenance and quality of the
  existing datasets as part of the overall
  initiative
• Align the development of an improved data
  maintenance process (under ROCQI) with any RRCN
  initiative
• Develop the RRCN as a holistic initiative which
  addresses potential quality improvements to the
  property street address dataset
• Develop the dataset in manageable stages
• Develop the dataset to initially deliver only the
  3 fundamental elements identified (speed limits,
  flow direction, turning restrictions) by this
  Data Study (or 4 including height and weight
  restrictions)
• Develop the dataset to initially cover the
  metropolitan area only, with a view to expanding
  coverage the Emergency Services Directory areas
  as a following release
• The dataset should be developed, where possible
  as part of a national framework
• The ICSM should be kept closely informed of
  progress to help ensure alignment with a national
  RRCN
• The dataset should be developed in line with a
  national framework using lessens learnt from
  similar projects such as EuroRoadS

www.landgate.wa.gov.au
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SKM Routable Road Centreline Network - Data
StudyRisks

• A RRCN used for developing recommended routes
  could direct a vehicle along a route which cannot
  be travelled. Mitigation strategies
• Focus on data maintenance to deliver maximum
  overall reliability
• Gain input from users of the data in the
  maintenance process
• Hold a forum to manage EM expectations of the
  dataset and specifically workshop this issue
• Agencies may be unable to support the ongoing
  maintenance process and associated costs.
  Mitigation strategies are
• Ensure that stakeholders commitment to
  maintaining the dataset is based on tangible
  benefits to them, rather than goodwill
• In the case of LGAs develop a realistic
  maintenance process which considers a range of
  options (these could include goodwill, shared
  maintenance mechanisms, funding for maintenance
  or legislative change)
• For EM use drivers/navigators will develop an
  over-reliance on recommended routes. Mitigation
  strategies are
• Work closely with FESA and WAPS to determine how
  recommended routes would be handled and the
  impact of any unreliability on the overall
  benefits of a RRCN
• Data updates may not be supplied by LGAs at the
  required frequency. Mitigation strategies are
• Develop a realistic maintenance process which
  considers a range of options (these could include
  goodwill, shared maintenance mechanisms, funding
  for maintenance or legislative change)

www.landgate.wa.gov.au
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Routable Road Centreline Network Requirements
www.landgate.wa.gov.au
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Contact Details

• Marty Stamatis
• Postal Address Landgate
• 1 Midland Square MIDLAND 6056
• Phone Number [phone] (w)
• 0403 312 330 (m)
• E-mail marty.stamatis_at_landgate.wa.
  gov.au

www.landgate.wa.gov.au