Based on the investigation and data analysis, the objective index system of applicability analysis is established, and the applicability of meteorological monitoring stations on expressway is studied. The main conclusions are as follows: (1) The distribution of traffic meteorological monitoring equipment on expressway among different cities is greatly uneven. There almost is no any special traffic meteorological station in most cities, except in Jiangsu, Beijing and Hainan provinces. (2) The stations with the capability of monitoring specific factors match relatively well with local meteorological disasters; however, they call for refined layout. (3) At present, the domestic traffic weather station layout guides do not consider the characteristics of traffic weather and are lack of feasible standards. (4) Because China has wide territory, high mileage highways, and high cost traffic meteorological monitor equipment, depending on traffic meteorological stations solely is not the optimum way to solve the problems in traffic meteorological service. (5) The observation data of meteorological stations have certain accuracy; however, the monitoring of surface conditions and rain strength and visibility based on optical sensing and remote sensing can be easily affected by the environment. The monitoring data have not been shared fully between traffic and meteorological departments. (6) The main application of data includes real time monitoring, primary product developing, and relevant scientific research projects. At present, the data have not been shared fully and used practically; there are no specific guide products for traffic users. Some practical suggestions about traffic weather monitoring are presented, such as data assimilation and inversion technology, improvement of forecast and warning skills, etc.