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EVALUATION OF INTEGRATED SURVEILLANCE AND DATA MANAGEMENT INFRASTRUCTURE (ISDMI) PROGRAM IN PITTSBURGH AND PHILADELPHIA, PENNSYLVANIA.
| 题名： | EVALUATION OF INTEGRATED SURVEILLANCE AND DATA MANAGEMENT INFRASTRUCTURE (ISDMI) PROGRAM IN PITTSBURGH AND PHILADELPHIA, PENNSYLVANIA. |
| 作者： | Fekpe-E; Collins-S |
| 关键词： | Advanced-traveler-information-systems; Arterial-highways; Benefit-cost-analysis; Data-collection; Data-storage; Data-warehouses; Databases-; Evaluation-; Feasibility-analysis; Freeways-; Highway-traffic-control; Incident-management; Integrated-Surveillance-and-Data-Management-Infrastructure; Intelligent-transportation-systems; Metropolitan-areas; Philadelphia-Pennsylvania; Pittsburgh-Pennsylvania; Real-time-data-processing; Real-time-information; Route-guidance; Sensors-; Traffic-congestion; Traffic-data; Traffic-density; Traffic-speed; Traffic-surveillance; Traffic-volume; Vehicle-occupancy |
| 摘要： | The objectives of the Integrated Surveillance and Data Management Infrastructure (ISDMI) program are to provide real-time and archival traffic information services along with the integration of an existing surveillance infrastructure. The ISDMI systems are made up of two functional areas: (i) a data gathering function, i.e., Metropolitan Traffic Area (MTA) and (ii) a data processing and storage function application, the National Transportation Data Center (NTDC). The primary purpose of the MTA is to gather traffic information from various sources within a defined region and transmit those data back to the NTDC. The NTDC data reporting system processes, stores, and reports on the information from the data gathering system. The NTDC processes the data to provide real-time traffic condition information, and maintains a data storage or warehouse facility for archived data. Both the public and private sectors have access to the real-time and archival databases at the NTDC through a web-based enterprise system. The system consists of a network of sensors located across a metropolitan area and connected via a communications network to the NTDC. Each sensor collects information in real time, continuously monitors the roadway, and communicates to the NTDC on a regular basis (currently configured at intervals of 60 seconds) sending all of the information gathered in that period. The data, which are processed at the NTDC, are used for both real-time distribution and data archive purposes. Typical traffic sensor attributes, such as volume, occupancy, and speed, are retrieved from the device for each of the defined detection zones and stored as raw sensor data in the NTDC database by time of day and date. These data are used by ISDMI systems software to compute data elements such as traffic congestion and traffic density. Currently, there are 114 sensors in the Pittsburgh area and 178 in the Philadelphia area. These sensors are installed along urban freeways and major arterials. The primary purpose of the evaluation is to demonstrate the technical and institutional feasibility, costs, and benefits of the primary Intelligent Transportation Systems (ITS) user services in the areas of traveler information, route guidance, traffic control, incident management, and archived data functions, and to further encourage deployment of the systems in other cities. The expected outcomes of the evaluation are analyses and documentation of the benefits that are of interest to various stakeholders. These include cost savings and customer satisfaction with the traffic data generated by the ISDMI systems. |
| 总页数： | 2002/09/05. pp161 (Figs., Tabs., Refs., 1 App.) |
| 报告类型： | 科技报告 |
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