Geographic Data Technology, Inc. (Lebanon, NH), a developer of map databases, announced in the GITA Conference, the release of an enhanced database to provide support for complex facilities management, navigation, and geocoding applications. The April release of GDT’s Dynamap® street and address database products will provide data users with comprehensive, robust North American street and address information for use in a variety of demanding applications.
The new data release enhances GDT’s already comprehensive street and address coverage with precise positional and geometric accuracy to better model real-world conditions as well as additional attributes to ensure optimal performance in navigation and routing applications. GDT’s established processes for change detection and
management provide for ongoing data updates and ensure that customers have the tools to manage change between different versions of Dynamap products.
This significantly enhanced street and address database is the result of a two-year program designed to enhance GDT’s products based on a detailed market and customer-defined data specification model designed to meet the needs of demanding landbase, location-based services, and telematics applications. Using its collaborative, technology-driven compilation model, GDT put its vast infrastructure and state-of-the-art technology to work combining information from a variety of sources, including the many agencies responsible for managing the street infrastructure within their localities. With nearly 4 terabytes of imagery available, GDT’s mapping technicians are able to access an image for every segment of the database, providing an immediate visual check of database accuracy and alerting mapping technicians to new streets and other features.
With the implementation of this enhanced database model, GDT’s database provides positional accuracy of 5 to 7 meters for areas representing the majority of the U.S. population and is fully routable from all of the estimated 100,000 localities within the U.S. and Canada. GDT has also verified topological accuracy and connectivity between database features. The new database model retains GDT’s historical focus on
accurate addressing to ensure customers can locate facilities, find points of interest, or locate destination addresses. In addition, GDT reclassified and validated Arterial Classification Codes within all GDT street and address products. The Arterial Classification Codes (ACCs) are GDT’s unique roadway classification system that identifies roads by type and usage for better functionality within routing applications. For the 600,000 miles of the top ACCs representing major highways, GDT verified elevation information, connectivity and name consistency to allow for the creation of better and more direct routes. Other enhancements to improve functionality
include detailed information on one-way streets and legal turn restrictions, exit ramp information, and precise and detailed information to help maneuver complex rotaries, complicated turn requirements, and other confusing roadways.