This paper reports on a case study of the use of visualization of geospatial data that is distributed across data sets and requires integration over time and space to aid decision makers. Like many State Highway Agencies (SHAs) in the United States, the Texas Department of Transportation (TxDOT) is organized along the traditional functional lines of planning, design, construction, maintenance, and operations. It has historically relied on experience and longevity of its staff to efficiently and effectively plan its construction and maintenance projects. Although functional boundaries of maintenance and construction are fairly clearly defined, there tends to be some overlap in projects that can be executed by either of the functional groups. The department currently does not have a robust integrated information system for identifying potential planning conflicts between its construction and maintenance projects. This has led to suboptimal use of resources, including overlapping plans for maintenance and mobility enhancement projects. With over 650 highway projects assigned across two functional groups within the district’s (TxDOT Fort Worth district) boundary, it is a challenging task to assemble a coherent plan for managing these projects over a multi-year planning period that is subject to external stakeholder input as well as shifting funding constraints. Temporal and spatial data needed for integrated planning resides in specialized information systems developed for the needs of individual functional groups. To address this challenge, this district decided to integrate and visualize data from individual information systems in a Geographic Information System (GIS). A GIS-based tool was developed to integrate, visualize, and analyze projects data from multiple information systems. This paper documents the benefits associated with visualization and integration of projects data in a GIS to address planning challenges facing a typical highway agency. Among the lessons learned are the potential uses of GIS, which include detecting spatially and temporally overlapping projects, supporting integrated planning, and improving communication among functional groups within a state highway agency. The study demonstrates that such spatial-temporal representations of project data can lead to early identification of potential overlaps during the planning phase. In a broader context, such geospatial visualization efforts can also form the basis for eliciting practitioners’ perspectives and knowledge input in the development of spatial decision support systems.

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基于GIS的公路综合养护和建设规划可视化：以德克萨斯州沃思堡为例

本文报告了一个案例研究，该案例研究了使用地理空间数据可视化的情况，该可视化跨数据集分布，并且需要在时间和空间上进行整合以帮助决策者。像美国许多州高速公路局（SHA）一样，德克萨斯州交通运输部（TxDOT）沿计划，设计，建造，维护和运营的传统职能线进行组织。从历史上看，它依靠员工的经验和长寿来有效地计划其建设和维护项目。尽管维护和建设的功能边界已相当明确地定义，但是在可以由两个功能组中的任何一个执行的项目中，往往存在一些重叠。该部门目前没有强大的集成信息系统来识别其建设和维护项目之间的潜在计划冲突。这导致资源的使用不尽人意，包括用于维护和移动性增强项目的重叠计划。在该地区（TxDOT沃思堡地区）边界内的两个职能部门之间分配了650多个高速公路项目，因此要制定一个连贯的计划来管理这些计划，这是一项艰巨的任务，该计划在多年的计划期内要受到外部利益相关者的投入。以及转移资金限制。综合规划所需的时空数据位于为各个职能部门的需求而开发的专用信息系统中。为了应对这一挑战，该地区决定将地理信息系统（GIS）中各个信息系统的数据进行集成和可视化。开发了基于GIS的工具，以集成，可视化和分析来自多个信息系统的项目数据。本文记录了与在GIS中可视化和集成项目数据相关的好处，以解决典型公路机构面临的规划挑战。汲取的教训包括GIS的潜在用途，其中包括检测时空重叠的项目，支持综合规划以及改善州级公路机构内各职能部门之间的沟通。该研究表明，项目数据的这种时空表示可以导致在规划阶段早期识别潜在的重叠。在更广泛的背景下，