Abstract: As a pillar industry related to the people's livelihood, it is an inevitable trend for the transportation industry to increase the emphasis on corporate social responsibility practice under the guidance of national policy. This paper is based on the ISO26000 of the International Organization for Standardization, the G4 standard of the Global Reporting Initiative, and other relevant authoritative reports and related literature, then it combined with the connotation of CSR and the principle of typical indicators of high frequency in the authority agency to eliminate the indicators that reflect the repetition of information through the variance expansion factor and select the indexes of significant impact on the CSR evaluation through the principal component analysis. Hence five criterion layers (including the environment, human rights, etc.) and 45 indicators (including the use of recycled materials, smoke and dust emission and reduction, etc.) are constructed. The could model is used to construct the CSR evaluation model of transportation industry. The innovation and characteristics of this paper: First, by establishing a linear regression equation of one index and all other indicators, the index variance expansion factor VIF is used to solve the correlation index, and then remove the variance expansion factor which VIF is larger than the threshold and keep the remaining indicators to avoid the indicators reflecting the information repetition. Second, the absolute value of the factor load in the factor analysis is weighted by variance contribution rate, using the factor load to reflect the jth factor to explain the proportion of the ith indicator information, then screen significant indicators of the CSR evaluation and construct the CSR evaluation index system. The third is to construct a model of the performance evaluation for the CSR of the transportation industry based on the cloud model, it not only considers the uncertainty of the concept of the CSR, but also reflects the connection between the randomness of the transportation industry the vagueness of the CSR, it forms a mutual mapping relationship between qualitative and quantitative, and weights the evaluation index of the CSR through the cloud model, finally it measures the implementation of the CSR of the transportation industry.

Key words: CSR evaluation, evaluation index system, transportation industry, cloud model