Adverse or inclement weather has significant impact on traffic operation and road safety. According to statistics, more than thirteen percent crashes involved in adverse weather in China. In order to improve operating safety of expressway under adverse weather, several expressway agencies have established road weather information system, such as system on Huning Expressway, Jingjintang Expressway and Jingzhu Expressway in north Guangdong province. These systems have basic weather monitor function and some event detecting and forecasting capacity especially for dense fog. At present, many expressway agencies want to construct similar system in cooperation with meteorology department. But few paradigm systems can be referred in China, and engineers also lack practical experiences to plan and develop such systems. Thus, this paper is intended to discussion on some key issues in road weather information system implement. The aspects cover: requirement of road weather information system, category of road weather station (RWS) for expressway, major principles and considerations when siting RWS, tools used to select more appropriate RWS position. For the covering abstract see ITRD E138091. This paper is available from http://www.ictct.org/workshops/07-Beijing/78LiChangcheng332338.pdf.
Samenvatting