Study on the Relationship between Comprehensive Transportation Freight Index and GDP in China

As the fundamental and leading industry for national economic and social development, the development of transportation industry determines the trend of economic development, and reflects the cyclical changes of national economy. Freight, as the basis of transportation industry, is closely related to GDP development. This article analyzes the intrinsic relationship between comprehensive transportation freighting index and GDP for early detection of extremely hot or cold development problems in transportation, which not only help us with a better known of macroeconomic trend in the country, but also provide the basis for risk warning of transportation industry. Analysis results show that, the volume of freight traffic and freight turnover of China are positively correlated with GDP.