The rapid development of the social economy and the improvement of people's living standard sets higher and new requirement for the expressway system. To meet the requirement, we should not only expand the scale of expressway network, but also improve the service level of expressway facility service system. How to improve the service level should be given top priority.The service system embraces three subsystems, the road, the toll-gate and service area. Bearing the"service"idea of facilities service system, this thesis examines the subsystems and evaluation methods of the service level, starting from the needs of the clients, taking the clients'satisfaction degree as the criterion, used on-the-spot investigation,numerical calculation, quantitative analysis and employing the queuing theory.To ensure the accuracy of the index coefficient, in doing comprehensive evaluation, the thesis first got the data of the customer need and their subjective feelings of the service level, then did statistical analysis of the data to get the index weight. By using the overall indexing method, the service level of one subsystem was evaluated to determine the grade of the service level of the whole facility system. In addition, the distance comprehensive evaluation method was employed to evaluate the service levels of different subsystems, resulting in a list in terms of the service level. Lastly, the thesis testifies the aforementioned methods by setting an example of four roads in a certain area in order to validate the scientificity and feasibility of the methods. |