digital highways what are they? why do we need them? how do we get there?
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Digital Highways What are they? Why do we need them? How do we get there?. Ron Singh, PLS Chief of Surveys/Geometronics Manager Oregon Department of Transportation ODOT Surveyors Conference Salem, Oregon 1 April, 2014. Maps. - PowerPoint PPT PresentationTRANSCRIPT
Digital HighwaysWhat are they? Why do we need them?How do we get there?
Ron Singh, PLSChief of Surveys/Geometronics ManagerOregon Department of Transportation
ODOT Surveyors ConferenceSalem, Oregon
1 April, 2014
Maps
Purpose - Visualize a representation of a (physical) real world area
Evolution◦Crude sketches (2D)◦1:x Scale drawings (2D)◦1:1 Scale drawings (2D and 2 ½D)◦True 3D (varying levels)
Virtual world
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Design Workflow - PAST
Referenced to alignment (“P” line, etc.)Site represented by 2D Base MapTerrain represented by Cross SectionsGrade represented by ProfilesBlind between data points2D designPaper plans and specificationsWet signatures
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Design Workflow - TODAY
Geospatially referencedCoordinates projected to planeSite represented by 2 ½ D Base MapTerrain represented by Digital Terrain
Model (DTM)Blind between data points – albeit closer3D roadway prism design flattened to 2DPaper plans and specificationsWet or Digital signatures
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Design Workflow - FUTURE
Truly Geospatially referenced3D coordinate system – No projectionsSite/Terrain represented by virtual worldFull 3D designDigital signatures3D data utilized
for constructionHierarchy – Data primary, plans secondary
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Traditional As-built Plans
Documents changes to plansRed lines on hardcopy plansNow on CAD drawingsLow priority compared to constructionVery dependent on inspectorMade from rough measurementsNot sealed by engineer or surveyor
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Traditional As-built Plans
2DUnreliableNot useful for subsequent engineering
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Future
Engineering data life cycleAs-built 3D model Utilize for maintenance, operation, asset
management and future engineeringEngineering accuracyLow distortion coordinatesPost Construction SurveySealed by licensed surveyor
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Post Construction Survey
Performed during and post constructionFinal Horizontal and Vertical ControlRight-of-Way boundaryRoadway prism information and DTMUnderground utilities and featuresOn-ground featuresAbove ground features
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For Intelligent Decisions…
We need knowledgeKnowledge:
Acquaintance with facts, truths, or principles, as from study, investigation or information.
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Knowledge of…
Our transportation system -- what we have
It’s conditionThe load on itAreas of concernPublic’s needGapsPrioritiesResourcesFunding
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VISION for the future
PLAN for the future!
Safer, smarter, less disruptive surveying3D Design – advanced visualization, clash
and problem detectionAutomated machine guidance and
intelligent construction systemsSophisticated asset management for
informed decisionsEfficient operation of our highway system
Digital Highways
Future backbone of highway information system enabling:
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… and the inevitable transition to partial and fully autonomous vehicles.
Highway Lifecycle Data
Digital Highways – entire state systemVisual – image based, solid modelsCreated by existing feature data captureInterspersed by 3D Engineered Models
◦Engineering centerline alignment◦Right-of-way boundary◦Design/As-built◦Asset inventory w/attributes◦Performance data
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Operational Needs
See◦Above, on and below the surface
Measure◦Location (geospatial), distance, area, volume
Evaluate◦Age, condition, performance
Find/Query◦Locate, tally, report
Relate◦ Planer, Linear Referencing, adjoiners
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Operational Needs
Manage Performance◦Safety, traffic volume, weather impacts,
Track History◦Design, construction, documents
Understand Geometry◦Design, as-built, survey, professionals of record
Retrieve Documents◦Contracts, inter-governmental agreements,
plan sets, technical reports
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Operational Needs
Monitor◦Movement, deformation, degradation
Simulate◦Traffic, oversize routing
Overlay◦Live traffic, micro weather
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Today
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Operational Need Field Office
See X
Measure X
Evaluate X
Find/Query X
Relate X
Performance X
History X
Geometry X
Documents X
Monitor X
Simulate n/a n/a
Point Clouds
Enables the development of Digital Highways
A means to an endCreated, certified, and managed by expert
qualified personnelBlack Box Simplified for end user
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Point Clouds (for projects)
Full Utilization of Information Rich Point Clouds
From “2½D BaseMap” to “Virtual World”No Traditional (Triangulated) DTMCritical 3D Objects:
◦Mathematically Modeled (geometric solid object)◦Mesh Modeled (reality, imperfect, discreet objects)
3D Feature Extraction ONLY Where Necessary for Design
Certified by Professional of Record
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Point Clouds (as an asset)
Virtual Highway Corridors◦Information Rich Point Clouds◦Aerial and Oblique Imagery
Accuracy◦Low for entire system◦Engineering/Quality in certain areas
Programmatic Approach (statewide, cyclic)Updated by Project As-Built Post Construction
Surveys
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Point Clouds (as an asset)
Integrated w/GIS◦Engineering Alignments◦Right-of-Way Boundaries◦Asset Inventory◦Pavement Conditions
Replacement for Digital Video LogSafety AnalysisAccident Reconstruction Survey (streamline)Oversize Vehicle Routing
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Proactive Data-centric Approach
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Project DevelopmentSurveyVirtual Site
3D Design
ConstructionStaking
Digitally Signed Data
20%
MachineControl
DigitallySigned
EngineeringData
Archive
80%
DigitallySigned
Future
Post Construction Survey
Tomorrow
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Digital Highway
See X
Measure X
Evaluate X
Find/Query X
Relate X
Performance X
History X
Geometry X
Documents X
Monitor X
Simulate X
Recent Example of Operational Useof LiDAR
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Sanpoil
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Thank You!
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Ron Singh, PLSChief of Surveys/Geometronics Manager
Oregon Department of Transportation