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Trimble > Case Studies > Virginia Department of Transportation's Success with RFID and GPS for Utility Mapping

Virginia Department of Transportation's Success with RFID and GPS for Utility Mapping

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Customer Company Size
Large Corporate
Region
  • America
Country
  • United States
Product
  • 3M Electronic Marker System (EMS) marker balls
  • 3M handheld locator device
  • Tri-Global UtiliMapper software
  • Trimble GeoExplorer GeoXH 6000
Tech Stack
  • RFID
  • GPS-based mapping
  • Bluetooth connectivity
  • GIS-based software
Implementation Scale
  • Pilot projects
Impact Metrics
  • Cost Savings
  • Productivity Improvements
  • Customer Satisfaction
Technology Category
  • Networks & Connectivity - RFID
  • Analytics & Modeling - Real Time Analytics
Applicable Industries
  • Construction & Infrastructure
  • Utilities
Applicable Functions
  • Field Services
  • Maintenance
Use Cases
  • Track & Trace of Assets
  • Infrastructure Inspection
  • Remote Asset Management
Services
  • System Integration
  • Software Design & Engineering Services
About The Customer
The Virginia Department of Transportation (VDOT) is a large governmental organization responsible for the construction and maintenance of the state's transportation infrastructure. The Northern Virginia District, in particular, is a rapidly growing area that requires precise and efficient management of underground utilities to support ongoing construction projects. VDOT's Construction Project Control group is tasked with identifying and relocating underground telecommunications, gas, and water lines to facilitate new transportation projects. The organization collaborates with various utilities in the region to ensure accurate mapping and relocation of these assets, aiming to minimize disruptions and enhance safety during construction activities.
The Challenge
The Virginia Department of Transportation (VDOT) faced significant challenges with inaccurate as-built utility maps, which often led to costly delays and potential safety hazards during construction projects. In the rapidly growing Northern Virginia area, discrepancies in asset maps were common due to poorly mapped locations of new pipes and cables, unrecorded field modifications, and outdated design drawings. These inaccuracies could result in construction crews being idled, expensive relocations, and fines for road closures during peak traffic times.
The Solution
VDOT implemented a pilot program using RFID marker balls, GPS receivers, and GIS-based software to improve the accuracy of underground utility mapping. The 3M Corporation provided Electronic Marker System (EMS) marker balls, which contain RFID chips that can be programmed with a handheld locator device. These marker balls are buried along with utility assets, allowing for precise identification and mapping. Tri-Global Technologies developed the UtiliMapper software, which integrates with GPS-based mapping devices and communicates with the 3M locators to capture RFID data. VDOT technicians use Trimble handheld GPS devices to map the assets with high accuracy, ensuring that the location data is precise and reliable. The UtiliMapper software also addresses the lack of standardized mapping formats by outputting maps in various formats, including MicroStation, AutoCAD, SmallWorld, ArcGIS, and Google Earth.
Operational Impact
  • VDOT's use of RFID marker balls and GPS-based mapping has significantly improved the accuracy of underground utility maps, reducing the risk of costly construction delays and safety hazards.
  • The collaboration with utilities in Northern Virginia has facilitated the bulk purchase of marker balls, making the solution cost-effective and widely adopted.
  • The UtiliMapper software's ability to output maps in multiple formats has streamlined the mapping process, accommodating the diverse needs of engineering, construction, and utility stakeholders.
  • The high accuracy of the Trimble GPS devices ensures that VDOT can reliably map underground assets, enhancing the overall efficiency and safety of construction projects.
Quantitative Benefit
  • The use of RFID marker balls adds only $0.60 per linear foot to utility installation or relocation projects.
  • VDOT achieves a horizontal accuracy of about six inches in mapping underground utility assets using Trimble GeoExplorer GeoXH 6000 devices.

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