Abstract: In order to determine the values of relative importance of factors influencing risk in dangerous goods transportation, and facilitate dangerous goods transportation company to allocate limited resources,the paper was aimed at developing a method for analyzing the importance of factors influencing risk in dangerous goods' transportation based on the quality function deployment method. Firstly, QFD method was used to fully identify the risk factors in the service designs stage. Secondly, on the basic of both AHP and entropy value method,a model was built for assigning values to weights of experts, which can minimize the difference between the subjective weight and the objective weight. Finally, an evaluation model was built for risk factors importance in the fuzzy environment based on the fuzzy linguistic variables and triangular fuzzy numbers. Then values of relative importance of factors influencing risk in the transport process were obtained by using the model. The example's results show that transport equipment, traffic conditions, professional skills of practitioners, emergency equipment and emergency plans have a greater impact on the risk in dangerous goods' transportation.

Key words: dangerous goods transportation, quality function deployment(QFD), entropy value method, comprehensive empowerment, triangular fuzzy number, relative importance