A Study of Investigation Method Upon Expressway Service Level

The survey of expressway service level in China needs upgrade nowadays. This article proposes that respondents herein cover drivers of travelers and goods transport, transport managerial, passengers, sedan drivers etc, in the view of consumers of road commodity network. And the respondent weight is determined by questionnaire numbers and difficulty level for sample taking. The preliminary survey, proceeded with on-the-spot questionnaire and discussions with transport enterprises, suggests a focus of investigation upon consummation and satisfaction of services in transit, toll station, traffic information, along with placement of service area and its parking lot, and customer convenience. Finally, a survey cost forecasting model is put forward, according to the optimal allocation out of stratified sampling and the affirmed stratified sample size. Namely, the response rate renders the bulk sample coordination. The proposed investigation measure reveals the factual expressway service status, based on its low cost, high availability, and applicability.