详情

原文传递 A FIELD TRIAL OF A VEHICLE'S GRIP COMPARED WITH RWS DATA.

题名：	A FIELD TRIAL OF A VEHICLE'S GRIP COMPARED WITH RWS DATA.
作者：	Haavasoja-T; Haavisto-V; Turunen-MJ; Nylander-P; Pilli-Sihvola-Y
关键词：	Field-tests; Finland-; Freezing-; Human-factors; Ice-concentration; Icy-roads; Neural-networks; Road-weather-information-systems; Vehicle-performance; Winter-
摘要：	The measurement results obtained from the Vaisala ROSA Road Weather Station (RWS) were compared with independent human observations of vehicle's grip in a field trial. The trial was consulted on a two-lane main road in Utti, Southern Finland during the winters of 1999-2000 and 2000-2001. The purpose of the trial was to find out which measurement results best indicated the vehicle's grip. According to the results, on average the thickness of ice layer correlated well with the vehicle's grip. In more detail, if the ice layer was thicker than 0.05 mm, it was possible to determine with a substantial accuracy of 97.4% that the grip was reduced or poor. On the contrary, when the thickness of the ice layer was below 0.05 mm, it was still possible to assess the grip but in some cases the thickness alone did not yield enough information. By applying a neural network, the thickness of the ice layer and the difference between the road temperature and freezing temperature were the best indicators of a vehicle's grip on this set of data and observations.
总页数：	Conference Title: 11th International Road Weather Conference (http://www.sirwec.org). Location: Sapporo, Japan. Sponsored by: Standing International Road Weather Commission. Held: 20020126-20020128. 2002/01. pp7
报告类型：	科技报告