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WEIGH-IN-MOTION SYSTEM CALIBRATION. CURRENT CHALLENGES. Significant Growth in CMV Traffic Increased congestion and delay Demand for larger and heavier vehicles Mounting stress on infrastructure Greater need for effective and efficient enforcement . CURRENT CHALLENGES.

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Presentation Transcript
current challenges
CURRENT CHALLENGES
  • Significant Growth in CMV Traffic
    • Increased congestion and delay
    • Demand for larger and heavier vehicles
    • Mounting stress on infrastructure
    • Greater need for effective and efficient enforcement
current challenges3
CURRENT CHALLENGES
  • Traditional WIM System Calibration Method Limitations
    • Field calibration procedures
      • Costly to perform
      • Occur infrequently
    • Auto-calibration procedures
      • May lead to progressive drift
    • Multiple weight sensor installation
      • Costly
      • Provides modest gains in accuracy
    • Post-collection data editing
      • provides only general indication of data conformance to expected weight distributions
      • not timely in flagging WIM performance problems
background

THE NETHERLANDS

BELGIUM

GERMANY

FRANCE

SWITZERLAND

SLOVENIA

BACKGROUND
  • 2006 European Scan Tour
    • Emerging technologies
    • Unconventional procedures
    • Novel data applications
    • Innovative funding mechanisms
    • Multinational harmonization
european approach
EUROPEAN APPROACH
  • WIM System Calibration
    • Continuous calibration
      • France, The Netherlands, during scheduled enforcement
    • Quality assurance
      • The Netherlands issues QA Statement with every data request
    • Dynamic calibration
      • The Netherlands utilizes specially designed vehicle
supporting technologies
SUPPORTING TECHNOLOGIES
  • Overheight Vehicle Detection System
  • Vehicle Profiler System
  • WIM Systems
    • In-road
    • Bridge
  • Dynamic Calibration Vehicle
  • Vehicle Identification System
  • Advanced Routing/Permitting System
  • Archived Records Database
supporting technologies7
SUPPORTING TECHNOLOGIES
  • In-road WIM System
supporting technologies8
SUPPORTING TECHNOLOGIES
  • Bridge WIM System
supporting technologies9
SUPPORTING TECHNOLOGIES
  • Vehicle Identification System
supporting technologies10
SUPPORTING TECHNOLOGIES
  • Archived Records Database
supporting technologies11
SUPPORTING TECHNOLOGIES
  • Dynamic Calibration Vehicle
implementation

Database

DSRC

Camera/OCR

Computer Interface/Software

Weight/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Voltage/Axle Sensors(X Weight Accuracy)

IMPLEMENTATION

AND/OR

implementation13

Database

Database

DSRC

Camera/OCR

DSRC

Camera/OCR

Computer Interface/Software

Weight/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Weight/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Voltage/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Voltage/Axle Sensors(X Weight Accuracy)

IMPLEMENTATION

AND/OR

implementation14

Dynamic Calibration Vehicle

Database

Database

DSRC

Camera/OCR

DSRC

Camera/OCR

Computer Interface/Software

Computer Interface/Software

Weight/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Weight/Axle Sensors(X Weight Accuracy)

Voltage/Axle Sensors(X Weight Accuracy)

Voltage/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Computer Interface/Software

Voltage/Axle Sensors(X Weight Accuracy)

Computer Interface/Software

Weight/Axle Sensors(X Weight Accuracy)

IMPLEMENTATION

AND/OR

benefits
BENEFITS
  • Eliminates need for resource-intensive manual field calibration
  • Enhanced weight data quality benefits broader transportation and enforcement agency activities
    • Planning and programming
    • Enforcement
    • Design and engineering