Presentation is loading. Please wait.

Presentation is loading. Please wait.

AASHTO Technology Implementation Group (TIG) FY 2007 AASHTO TIG Focus Technologies Linear Reference System (LRS) Steve Kadolph – Iowa DOT Jonathan (J.J.)

Similar presentations


Presentation on theme: "AASHTO Technology Implementation Group (TIG) FY 2007 AASHTO TIG Focus Technologies Linear Reference System (LRS) Steve Kadolph – Iowa DOT Jonathan (J.J.)"— Presentation transcript:

1 AASHTO Technology Implementation Group (TIG) FY 2007 AASHTO TIG Focus Technologies Linear Reference System (LRS) Steve Kadolph – Iowa DOT Jonathan (J.J.) DuChateau – Wisconsin DOT Oscar Jarquin – California DOT Eric Abrams – Iowa DOT

2 Technology Implementation Group AASHTOs TIG invests time and money to accelerate selected technology adoption by agencies nationwide. AASHTOs TIG invests time and money to accelerate selected technology adoption by agencies nationwide. TIGs lead states team objective is to share information with AASHTO member agencies to improve the Nations transportation system TIGs lead states team objective is to share information with AASHTO member agencies to improve the Nations transportation system The LRS TIG objectives are The LRS TIG objectives are Knowledge and experience related to LRS implementation Knowledge and experience related to LRS implementation Webinars to share experiences and educate others Webinars to share experiences and educate others Customized state visits Customized state visits Iowas LRS Maintenance Tool and system at no charge Iowas LRS Maintenance Tool and system at no charge

3 NCHRP (2) LRS Model Linear Referencing System Data Model Linear Referencing System Data Model Developed in response to the need to integrate linearly referenced data Developed in response to the need to integrate linearly referenced data Includes Includes Multiple linear referencing methods (LRM) Multiple linear referencing methods (LRM) Multiple cartographic representations Multiple cartographic representations Multiple Network Representations Multiple Network Representations Multiple Route Names Multiple Route Names Business data integration is supported through transformations among methods, networks and cartographic representations by associating with a central linear datum Business data integration is supported through transformations among methods, networks and cartographic representations by associating with a central linear datum

4 What Does a (2) System Contain Spatial representation of a transportation system Spatial representation of a transportation system Accurate Centerline Accurate Centerline Multiple Cartographic abstraction layers Multiple Cartographic abstraction layers Datum most stable layer over time Datum most stable layer over time Network Layer Network Layer Links and Nodes that define the network Links and Nodes that define the network LRM Location LRM Location Data required for those methods Data required for those methods Programs and interfaces to supply a LRS location to business data Programs and interfaces to supply a LRS location to business data

5 What Does a (2) System Does Not Contain Business data is separated from the (2) model order to minimize the impact on existing business data

6 Why Implement a (2) Model Single source for transportation systems Single source for transportation systems Navigable network Navigable network As many LRMs, routes and cartographies as needed As many LRMs, routes and cartographies as needed Minimizes changes to existing business data Minimizes changes to existing business data Can support needs of multiple business areas Can support needs of multiple business areas

7 Marketing Plan for Linear Referencing System Assess LRS Needs and Contacts in Each State Assess LRS Needs and Contacts in Each State Develop PowerPoint Presentation, Brochure and Posters Develop PowerPoint Presentation, Brochure and Posters Develop Value Analysis Document (Contractor) Develop Value Analysis Document (Contractor) Develop and Host Webinar(s) Develop and Host Webinar(s) Give Presentation and/or Workshop at TRB, GIST and AASHTO IS Conferences Give Presentation and/or Workshop at TRB, GIST and AASHTO IS Conferences Visit States Offering Invitation Visit States Offering Invitation Assess LRS Level of Knowledge Transfer and Implementation Success Assess LRS Level of Knowledge Transfer and Implementation Success Final Report Final Report

8 TIG LRS Team Members Iowa Lead State Iowa Lead State Peggi Knight ( Team Leader) Peggi Knight ( Team Leader) Eric Abrams (Gis Coordinator) Eric Abrams (Gis Coordinator) Karen Carroll (LRS Manager) Karen Carroll (LRS Manager) Mike Clement (QA LRS) Mike Clement (QA LRS) Steve Kadolph (Technical Exp.) Steve Kadolph (Technical Exp.) Ryan Wyllie (QA LRS) Ryan Wyllie (QA LRS) Other States Other States David Blackstone (Ohio) Jonathan (J.J.) DuChateau Jonathan (J.J.) DuChateau (Wis) John Farley (N. Car.) Oscar Jarquin Oscar Jarquin (Calif.) Thomas Martin (Minn.) o Non State Tim Bisch (Bentley Systems, Inc.) Dave Fletcher (Geographic Paradigm Computing, Inc. ) Mark Sarmiento (FHWA)

9 Iowas LRS Experience

10 Agenda What Iowas LRS includes What Iowas LRS includes What do the DOTs business units gain What do the DOTs business units gain What allowed Iowa to succeed What allowed Iowa to succeed

11 Iowas LRS Implementation of NCHRP model. Which separates business data from the location components of linear features (roads, navigable rivers, railroads, pipelines, etc.).

12 NCHRP Model LRS Components Coordinate Route Reference Post Coordinate Route MilepointStationing Literal Description Base Record CrashPMIS Inventory Project Data Program Centerline Representation 2 Centerline Representation 3 Centerline Representation 1 Address Range

13 LRS Components (all public roads 114,000 miles) Cartography Cartography Traveled Way Spatial Traveled Way Spatial Roadway Spatial Roadway Spatial Datum (Anchor Sections & Points) Datum (Anchor Sections & Points) Network (Transport Links & Nodes) Network (Transport Links & Nodes) Routes Routes Parsed Names Parsed Names Paths Paths LRM Components (i.e. Reference Post) LRM Components (i.e. Reference Post)

14 Transformations between supported business location referencing methods (LRM) A common linear description of the network that can relate all the methods. LRM Datum Transform

15 How does LRS benefit the DOT Improved Accuracy Entire road system (all public roads) are created based upon same standard Entire road system (all public roads) are created based upon same standard A separate abstraction layer call Roadway exist that provides a single representation of divided roadways A separate abstraction layer call Roadway exist that provides a single representation of divided roadways The system is represented over time (from 1/1/2001) The system is represented over time (from 1/1/2001)

16 How does LRS benefit the DOT Central location of data Route names for all roadway systems Route names for all roadway systems One navigable network One navigable network Centerline for all roads Centerline for all roads History of road network History of road network

17 How does LRS benefit the DOT Clearly defined rules and practices LRM usage and results LRM usage and results Data staged has same location component Data staged has same location component Processes and QC processes clearly defined Processes and QC processes clearly defined Metadata for all LRS components Metadata for all LRS components Source for centerlines identified and dated Source for centerlines identified and dated Who owns LRS components known Who owns LRS components known

18 LRS how did Iowa succeed Business case for creation of LRS Business case for creation of LRS Division Level Sponsors Division Level Sponsors Business data kept separate from location Business data kept separate from location Business unit ownership LRS Business unit ownership LRS Active project management Active project management

19 Implementation Issues Time span ( ) Time span ( ) Digitize roads ( ) Digitize roads ( ) Develop maintenance tool ( ) Develop maintenance tool ( ) Create LRS components ( ) Create LRS components ( ) Cost to develop maintenance tool Cost to develop maintenance tool Dollars Dollars Multiple vendors Multiple vendors

20 Wisconsins LRS Experience

21 LRS Components Coordinate Route Reference Post Coordinate Route MilepointStationing Literal Description Base Record CrashPMIS Inventory Project Data Program Centerline Representation 2 Centerline Representation 3 Centerline Representation 1 Address Range Wisconsins LRS Similarities to Iowa Most concepts in Iowas slides also apply to WIs implementation Most concepts in Iowas slides also apply to WIs implementation Separate business data components from LRS Separate business data components from LRS Linear Datum that serves as a LRS hub Linear Datum that serves as a LRS hub Multiple LRMs supported (each tied to the Linear Datum) Multiple LRMs supported (each tied to the Linear Datum) LRM Datum

22 Wisconsins LRS Difference from Iowa WIs Linear Datum & Network are one and the same WIs Linear Datum & Network are one and the same Built state roads (1993), then local roads later (2002) Built state roads (1993), then local roads later (2002) In-house solution (mainly because commercial solutions didnt exist at this time) In-house solution (mainly because commercial solutions didnt exist at this time) Best practice to store Linear Datum location instead of LRM for business event data Best practice to store Linear Datum location instead of LRM for business event data Iowa has put more emphasis on statistics for determining linear measurement accuracy Iowa has put more emphasis on statistics for determining linear measurement accuracy

23 Wisconsins Experience 17 years production experience with these LRS concepts 17 years production experience with these LRS concepts Design driven by Information Engineering principles Design driven by Information Engineering principles LRS design was essentially a data modeling & normalization exercise LRS design was essentially a data modeling & normalization exercise Results in many of the concepts Results in many of the concepts Allows management of one LRS component not to dictate management of another LRS component Allows management of one LRS component not to dictate management of another LRS component

24 Wisconsins Experience Designed so linear data processing can be done outside of GIS software Designed so linear data processing can be done outside of GIS software Only GIS layer required is a roadway centerline representation Only GIS layer required is a roadway centerline representation LRS transformation processes to create cartographic representation of business data LRS transformation processes to create cartographic representation of business data

25 Wisconsins Experience Conceptual & design details are important to understand Conceptual & design details are important to understand Entity Definitions, Business Rules, Use Cases Entity Definitions, Business Rules, Use Cases Such as: What is a road? What is a road? Where does a route start/end? Where does a route start/end? What events cause birth/death of a LRS object? What events cause birth/death of a LRS object?

26 Wisconsins Experience Implementation considerations for LRS entities need to be weighed Implementation considerations for LRS entities need to be weighed Is each linear location uniquely described? Is each linear location uniquely described? How many nodes should represent an intersection? How many nodes should represent an intersection? What constitutes a divided roadway? What constitutes a divided roadway? What point should be used for merging/diverging roadways? What point should be used for merging/diverging roadways?

27 Wisconsins Experience Additional LRS functionality considerations Additional LRS functionality considerations (Some things not explicitly mentioned in 20-27) Ability to associate still valid portions of old Anchor Sections to its replacement(s) Ability to associate still valid portions of old Anchor Sections to its replacement(s) Ability to associate opposite direction Anchor Sections Ability to associate opposite direction Anchor Sections The temporal aspect of this data is much harder than it seems The temporal aspect of this data is much harder than it seems

28 Californias LRS Experience

29 California Business Driver… Corridor Management

30 Multiple LRMs County Route Postmile ORA 405 R County Route KiloPost ORA 405 R

31 Security Internet Other TIMI GIS SOA (Service Oriented Architecture) Java/XML Message Bus TASAS Data Files Applications TSM Hwy. Inven. HPMS Programming Traffic Volume OE-PSE PMS TMCs (loops, CMS, etc.) Web Pages SOA output via GIS = Planning, PID, Design, Proj. Mgt., Constr., Operations, etc. for system performance, geometrics, etc. Other CTIS PEAR Parcels Others Google Earth CAD Others Public State Agencies Locals CT PASSMain FrameExternal Sources Linear Referencing Search FunctionsMapping Other Functions St. Hwy Inv. HPMS Envir. Doc Mgt Asset Mgt SHARED FUNCTIONS ENTERPRISE SYSTEM INTEGRATION Service Oriented Architecture (SOA)

32 Identifying Common SOA Components

33 GIS FilesCadastral CADD Post Mile Info Geodatabase / Web Services MicroStation Geospatial Data GIS Web GoogleEarth Geospatial Data Management

34 Postmile Lookup Tool

35 ArcGIS Tool Bar

36 Questions State Name and who you represent State Name and who you represent Ask question to the panel Ask question to the panel

37 The LRS TIG objectives are Knowledge and experience related to LRS implementationKnowledge and experience related to LRS implementation Webinars to share experiences and educate othersWebinars to share experiences and educate others Customized state visitsCustomized state visits Iowas LRS Maintenance Tool and system at no chargeIowas LRS Maintenance Tool and system at no charge

38 Technology Implementation Group The LRS TIG objectives are The LRS TIG objectives are Knowledge and experience related to LRS implementation Knowledge and experience related to LRS implementation Webinars to share experiences and educate others Webinars to share experiences and educate others Customized state visits Customized state visits Iowas LRS Maintenance Tool and system at no charge Iowas LRS Maintenance Tool and system at no charge


Download ppt "AASHTO Technology Implementation Group (TIG) FY 2007 AASHTO TIG Focus Technologies Linear Reference System (LRS) Steve Kadolph – Iowa DOT Jonathan (J.J.)"

Similar presentations


Ads by Google