Location Referencing for An Asset Management System A State DOT Approach

Transcription

1 Location Referencing for An Asset Management System A State DOT Approach Jack Stickel Alaska Department of Transportation and Public Facilities

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3 Traditional Asset Management System Maintenance Management System Enterprise linear referencing system Highway inventory program GIS environment for asset management User interface solutions GIS examples

4 Enterprise Linear Referencing System Maintenance & Operations Typically reference work activity & asset locations using proximity to established features: - Cross streets - Bridges - Mileposts Milepost linear reference - does not meet accuracy or data integration requirements - Many missing or non-existent - Distance between mileposts does not reflect true distance between mileposts

5 Milepoint versus Milepost Linear Referencing System Route - Milepoint Reference System Milepost User View

6 Enterprise Linear Referencing System Maintenance & Operations Reporting MMS work activities requires users to enter milepoint information very frustrating Solution - Enterprise Linear Referencing that incorporates: Highway Inventory Program Spatial & linear measures in a geodatabase Asset management user interface

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9 Enterprise Linear Referencing System Highway Inventory Program Data Collection Plan * What is intended purpose What data collection method provides the level of detail to meet this purpose Which assets to include What is best method available to collection data for selected assets What resources are available * Asset Management Data Collection Guide, 2005

10 Enterprise Linear Referencing System Highway Inventory Program Field Data Collection Comprehensive effort to collect centerline coordinates, linear measures, & highway features (intersections, mileposts, bridges, etc.) for base reference network NavStar Mapping data collection system: Differential GPS Inertial Navigation System (INS) Gyrocompass Altimeter Distance Measurement Instrument (DMI) Separate GPS for time Calculates linear measures and fills gaps in GPS signal Accuracy + 15 feet as determined by DOT GIS/Mapping

11 Enterprise Linear Referencing System Highway Inventory Program Feature Data Collection 8 core data business areas that cut across work centers: HSIP BMS PMS 511 Traveler Information Traffic RWIS TDP Maintenance Management System Two step calibration process against base reference network Route Begin-to-End milepoint calibration Reference Feature-to-Reference Feature segment milepoint calibration Proved to be safe, cost effective, and assured data synchronization with the reference network

12 Enterprise Linear Referencing System Highway Inventory Program Geodatabase MMS Features The geodatabase will store location and attribute information for high priority MMS features: Bridges Culverts Guardrails Maintenance Facilities Paved Shoulders Rest Areas Rumble Strips Turn Outs Signs

13 GIS Environment Geodatabase ArcSDE Desktop User Internet Access Oracle DBMS Server ArcGIS 9 ArcIMS GIS Data HAS Data MapOptix External Databases BMS STIP MMS PMS

14 GIS Environment Data Model Elements Linear Referencing Linear Referencing (Routes and Events) «FeatureDataset» Transport Network Transportation Centerline network (Links, Nodes) «FeatureDataset» Jurisdictional Boundaries Jurisdictional Boundaries External Databases External Databases (MMS, PMS, BMS, STIP) Domains Domains (Data Codes; Ranges; Business Rules)

15 GIS Environment Thematic Layers Point Events Line Events LRS Routes Networks Reference Network BaseMaps Digital Orthophotos

16 Enterprise Linear Referencing System Asset Management User Interface Import HAS/GIS reference feature data file to MMS (provides look-up table of features and their milepoints) Modify MMS user interface so users can select reference features (and enter + or offset distance when appropriate); MMS software assigns appropriate milepoint

17 6th National Conference on Asset Management

18 CAATS/RATTS 2002

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