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原文传递 Test Methods for Evaluating Field Performance of RWIS (Road Weather Information Systems) Sensors.

题名：	Test Methods for Evaluating Field Performance of RWIS (Road Weather Information Systems) Sensors.
作者：	fleege, e. j. scott, b. minge, e. gallagher, m. sabie, j.
关键词：	test methods, performance evaluation, meteorological data, pavement sensors, road weather data, data collection, monitoring
摘要：	At least 42 state departments of transportation (DOTs) and other public and private-sector agencies use road weather information systems (RWISs) to support highway-operations and maintenance decision making, public information messages, and weather forecasts by the meteorological community. These agencies typically specify requirements for the accuracy of RWIS atmospheric and pavement surface and subsurface sensor measurements at the time of procurement. Subsequent to the procurement, most agencies rely on vendor-developed testing and calibration methods or accept the sensor data without verification or regular and timely recalibration. However, uncertainty in the data generated by the sensors may compromise the value of this information. Guidance is needed for practical testing and calibration methods for RWIS sensors to ensure that the sensor is providing an accurate representation of actual conditions at the installed site. Methods for atmospheric sensors applicable to RWISs can be derived from existing literature and practice. Further research is needed to develop testing and calibration methods for RWIS pavement surface and subsurface sensors. The results of this latter research can then be combined with existing methods for atmospheric sensors to provide practical guidelines for field testing and calibrating RWIS sensors. Aurora, a consortium of several United States and Canadian DOTs and the Swedish National Road Administration formed to promote RWIS research and implementation, has investigated the state of the practice for testing and calibrating RWIS pavement surface and subsurface sensors. Their December 1999 report (see Special Note A) indicates that a number of countries and organizations were developing methods and standards for testing and calibrating RWIS sensors. As of 1999, only the Ministere de l'Equipment des Transports et du Logement of France had adopted and implemented guidelines for RWIS testing and calibration. / NOTE: Final rept. / Supplementary Notes: Prepared in cooperation with SRF Consulting Group, Inc., Minneapolis, MN. and Braun Intertec Corp., Minneapolis, MN. Sponsored by American Association of State Highway and Transportation Officials, Washington, DC. and Federal Highway Administration, Washington, DC. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
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