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| Assessment of the System Security Level of Highway Drop and Pull Transport |
| ZHAO Lu-hua1, CAO Qing-gui2, LI Yu-shan1, REN Chuan-xiang1 |
1. College of Transportation, Shandong University of Science & Technology, Qingdao Shandong 266590, China;
2. College of Mining and Safety Engineering, Shandong University of Science & Technology, Qingdao Shandong 266590, China |
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Abstract This study aims to analyze the system security level of drop and pull transport at the level of our current policy and technology. A highway drop and pull transport system is divided into sub-systems according to risk factors. A causal relationship model was developed between the sub-systems and system safety level of drop and pull transport, and the causal feedback loop was analyzed. A system dynamics flow diagram model was established, and simulation analysis was conducted. Results show that the drop and pull transport system security level is 81.673 7 in 2013 and 89.461 3 in 2015. This rank is considered acceptable. The result also indicates that the system security level remains relatively low even with the improvement of organization scheduling, safety technical standard, and policy environment. However, the system security level will improve gradually with time. Security is needed to strengthen safety management in the early stage of development. An analysis of the sensitivity of sub-systems indicates that the policy environment and tractor safety technology level influence the overall system security level of drop and pull transport. Therefore, related policies and rules should be improved as soon as possible. Investments for the safety of drop and pull vehicles should also be increased to promote the safe and rapid development of drop and pull transport.
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Received: 25 April 2015
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| Fund:Supported by the National Natural Science Foundation of China (No.51474138) |
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Corresponding Authors:
ZHAO Lu-hua,E-mail address:luhuazhao@163.com
E-mail: luhuazhao@163.com
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2016, Vol. 10 
