| With the reform and opening up,China’s economic has rapid development,which transport infrastructure on the promotion of the economy can not be ignored.Traffic infrastructure is an important part of government expenditure,its role is to greatly promote the circulation of people,goods and information,and is the key link between regions to strengthen ties.There are many factors that affect economic growth,such as labor skills,the availability of premises,incentive investment,entrepreneurial skills,the quality of the economic environment,etc.,while the transport infrastructure strengthens these factors to promote economic growth.Any country or region needs a mature transportation system to achieve economic progress and comprehensive competitiveness.The research problem of this paper is the relationship between traffic infrastructure and macroeconomic fluctuation.The structure of this article is divided into five parts.The first part is the introduction,mainly introducing the research value and significance of the article,as well as research methods and ideas.The research method of this paper is introduceing the traffic infrastructure into the dynamic macro model,and observing the connection between the transportation variable and the macroeconomic fluctuation.The second part is the description of the research on the relationship between transportation infrastructure and national economy at home and abroad.This part mainly introduces some related concepts and summarizes the research achievements of Chinese scholars and foreign scholars.The third part is to describe the characteristics of traffic infrastructure and macroeconomics in our country.According to the sample data from 1978 to 2015 in China,two time series of traffic infrastructure and gross national product are tested for the smoothness,then after the non-stationary sequence correction,the Granger causality test is done.the conclusion is that in our country’s economic development level,the traffic infrastructure is the reason for the development of the national economy,but in turn does not hold absolutely.At the same time,the C-D production function of the traffic infrastructure is reevaluated and the elastic coefficients of labor,capital and transportation infrastructure to total output are obtained.The fourth part is the main part of the article,the dynamic general equilibrium model of traffic shock is established,and the model is solved and calibrated.Then we simulate and compare the model and the actual economy.The conclusion is that the model simulates the actual economy.The macroeconomic variables and the total output show a better procyclicality.The last part is the conclusion of the article,policy recommendations and prospects,which is the summary of the full text,then future research needs to strengthen the progress. |