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WEIGH-IN-MOTION SYSTEM CALIBRATION

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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WEIGH-IN-MOTION SYSTEM CALIBRATION

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  1. WEIGH-IN-MOTION SYSTEM CALIBRATION

  2. 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

  3. 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

  4. THE NETHERLANDS BELGIUM GERMANY FRANCE SWITZERLAND SLOVENIA BACKGROUND • 2006 European Scan Tour • Emerging technologies • Unconventional procedures • Novel data applications • Innovative funding mechanisms • Multinational harmonization

  5. 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

  6. 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

  7. SUPPORTING TECHNOLOGIES • In-road WIM System

  8. SUPPORTING TECHNOLOGIES • Bridge WIM System

  9. SUPPORTING TECHNOLOGIES • Vehicle Identification System

  10. SUPPORTING TECHNOLOGIES • Archived Records Database

  11. SUPPORTING TECHNOLOGIES • Dynamic Calibration Vehicle

  12. 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

  13. 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

  14. 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

  15. 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

  16. FUNCTIONAL INTERFACE

  17. QUESTIONS

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