Roads captured in multiple sections

1
Managing the DEC Road Network
2
DEC Overview

• Core function is Land Management responsible for
  27,308,451ha
• Roads provide access throughout State Forest,
  National Parks and Reserves, Leases, an estimated
  70,000km network.
• Access is not always necessary, therefore some
  roads are no longer maintained and becomes
  naturally relegated

3
DEC Southwest Region 4724km of which 1393 paved
4
Two DEC Road Centerline DBs

• Basic Map producing data, similar to Landgates
  but with little attributes
• New raw road centerline data captured during
  inventory of Strategic Roads, fully attributed
  and linked to ROMAN data
• Neither have been compared or amalgamated at this
  stage due to verification of position, names and
  extents

5
DEC Road Data

• Information Management Branch (IMB) maintain
  spatial datasets for DEC including roads,
  landform, land use, vegetation,
• Responsible for spatial products such as ESD, COG
  etc using ESRI and Microstation programs
• Currently in negotiations with Landgate for
  access to maintain single database

CALM OPERATIONS GRAPHIC (COG) Image
6
IMB Road Dataset History

• Dataset originally from DOLA and value added
  through DAP in late 1980s
• Now forms the basis to all map products
• No extents or road names assigned
• Simple classification applied - Sealed,ltgt 6m, etc
  
• Dataset is maintained on request or during
  projects such as the ESD as its just too big
• Data is updated a as desktop exercise using
  orthos etc, not inspected in the field

7
Strategic Roads Initiative

• 2001, DEC responded to High Court decision to
  abolish the non-feasance rule
• Adopted a modified version of the ROMAN asset
  management system
• Introduced a Road Classification System using
  additional fields to categorize the network.

8
Phase 1 - Inventory

• Managers nominated roads to be collected
• Roads were classified either
• Strategic, Non-Strategic
• Four wheel drive, Two wheel drive
• Public, Industry or DEC
• Commenced the inventory of 40 000km of roads in
  2004 and was completed last Tuesday

9
Strategic Roads Initiative Data (SRD)

• All data is now available in ROMAN for the entire
  road network
• Other information such as Speed environment and
  safety hazards and remedial recommendations have
  been recorded
• Raw road centerline data for roads collected
  (DGPS lt1m)

10
Phase 2 Data verification and maintenance

• 2 Datasets,
• - ROMAN information for asset mgnt, Microsoft
  Access DB
• - Raw road centerline data
• Both datasets require access by regional staff
  for validation and maintenance, one affecting the
  other.
• DEC requires a system which has multi-user access
  and is more spatially orientated

11
ROMAN 2 ??

• Functionality appears suitable for DEC
  requirements
• Regional staff and other users (FPC) have access
  to spatially represented road information for
  verification and maintenance of data
• DEC have a system to prioritise and fund regional
  works programs
• Data can be accessed by MRWA for shared asset
  management, eg bridges etc

12
Spatial Data Maintenance ChallengeScenario 1

• Regional staff using ROMAN 2 alter road alignment
  during asphalt upgrade and extend original road
  extent
• Spatial alignment and new ROMAN road attributes
  are submitted in ROMAN 2
• This data flows through to MRWA, this information
  needs to flow on to Landgate
• Should the spatial data be delivered to Landgate
  from MRWA or fed from DEC??

13
Outcomes for a RRN

• Classified and attributed road centerline for DEC
  network
• posted speed zones or speed environments
  avaiable
• Developing a RAV network for the southwest
• ROMAN 2 system proposed to broadcast road
  closure, detour, etc

14
Current Projects

• Reviewing the current classification with
  associated operational guidelines and CoPs
• Finding a suitable database that meets corporate
  and user outputs
• Clean up of the raw centerline data
• Compiling a comprehensive bridge database with
  MRWA
• Determining a Class 1/2/3 RAV network with MRWA
• Using Network Analyst to undertake time mapping
  with downgrade of roads/bridges for funding case

15
Surveyed roads need to be verified

• Many surveyed roads have deviated from the
  original alignments nominated by the regions and
  districts
• Some additional roads have been added on the day
  of the road survey
• These roads need to be verified by regional staff
• Some roads may be taken off the final cut of data

Surveyed Road
Nominated Road
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Some roads captured in multiple sections(due to
other roads intersecting the surveyed road)
Bevan Road
17
Roads with no names