The GIS basemap is primarily an Arc/INFO coverage comprised of arcs, nodes, and a route system that geographically represents the roadways maintained in the Roadway Characteristics Inventory (RC1). Because of Florida's continued rapid growth, up-to-date imagery is constantly needed to help maintain the road system and plan for the future. The purpose of this project is to research the existence of the most recent digital aerial imagery available statewide, and to acquire, process, and provide the imagery to the Florida Department of Transportation (FDOT) Transportation Statistics Office. As a result of this project the FDOT has been able to acquire updated high resolution imagery for 34 of Florida's 67 counties. The master inventory of the acquired imagery was updated, the imagery processed and finally reformatted for use in the FDOT' s Transportation Statistics Office and throughout other offices as well. The FDOT can now more effectively manage the basemap, which is used for many purposes, including the following: providing a QA tool for RCI feature lengths; dynamic segmentation - the creation of GIS data layers from RCI features; map production; creation of the state's city-to-city mileage matrix; modeling. By utilizing the imagery in conjunction with the basemap, FDOT can also accomplish the following : derive information that would otherwise have to be derived in the field, such as road curvature, intersection direction, and others; conduct historical analysis, especially with regard to realignments, roads that may no longer be used, and other characteristics. (Author/publisher)
Samenvatting