详情

原文传递 Real-time Statewide Road & Weather Information Network

题名：	Real-time Statewide Road & Weather Information Network
作者：	William Brown; Guy Coss; Bill Legg; Amy O’Brien
关键词：	Real-time Statewide Road; Weather Information Network
摘要：	The Washington State Department of Transportation (WSDOT) has begun the rWeather Program to collect and disseminate real-time and predictive statewide road and weather information. The program is being accomplished in two phases. In phase I, WSDOT is gathering all available data and developing better ways to more accurately predict detailed weather conditions. These high-resolution weather forecasts are then being integrated with information from road condition models developed for use in Washington State. The first task of this phase was to create a highly dense database of Washington State weather observations. Over the past ten years the Northwest Weather Consortium(NWC), a group of local, state, and federal agencies, has established meteorological observing networks that collect data in real time. Sources across the state include agricultural monitoring networks, air pollution sensing stations, and even television station weather networks, as well as the resources of the National Weather Service Advanced Surface Observation Sites and Federal Aviation Administration. WSDOT joined this consortium, adding data from its own road/weather information stations so that all members now have access to data from over 400 remote weather sites. A second aspect of the effort has been the use of a high-resolution weather prediction system to generate detailed weather forecasts throughout the state. That system, coupled with the dense array of observations, is now able to supply WSDOT and other government agencies, the public, and businesses with information on existing and forecast weather conditions. The third element of this phase has been to develop road condition prediction models for use with observed and forecast atmospheric data. To make decisions about crew and equipment deployment, operations personnel need forecast and real-time data describing whether a section of roadway will experience conditions such as frost or ice. The program acquired and is evaluating and testing a road surface model developed at the University of Washington. The pavement prediction model was first integrated with the Penn State/NCAR version 5 land surface model for testing and evaluation. Next, the model’s use was expanded to integrate real-time and forecast atmospheric data collected by the NWC and WSDOT. Phase II of the program has been dedicated to data dissemination. The developed weather and road information was mapped for presentation on a dedicated Web site and via other media. A Web site has been developed to provide WSDOT Maintenance and other decision-makers, as well as the public, one-stop access to the resulting current and forecast weather conditions. Available on the rWeather Web site are weather information; incident, construction, hazard, and mountain pass information from WSDOT’s Condition Acquisition and Reporting System; the text displayed on freeway variable message signs; video from freeway surveillance cameras; and an audio format to present highway advisory radio messages. The clickable state map allows users to find the information at the level of detail desired and in the locations they require, with statewide, regional, and local views. Both project phases have been under concurrent development. The project’s beta Web site can be viewed at: http://www.wsdot.wa.gov/RWeather/
总页数：	ITS America. Meeting (11th : 2001 : Miami Beach, Fla.). ITS connecting the Americas : ITS 2001 : conference proceedings. 2001. pp15
报告类型：	科技报告