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In order to investigate the urban expressway off-ramp control problems, the traffic simulation software VISSIM is adopted. According to the traffic characteristics of the expressway off-ramp, the parameters of traffic model are determined. Furthermore, this paper uses dichotomy and control variables to obtain the thresholds as vehicles start queuing in off-ramp, and draws comprehensive zoning map...
The expressway of Maliuwan to Zhao tong (Mazhao expressway for short) was built in mountain area of Yunnan province, the geological structure and terrain of which is very complicated, and rock falls always happened, causing great damage. In order to find the countermeasures, the project team did a lot of field work along the expressway. The paper analyzed causes of rock falls, suggesting that the...
Road Section with high rate of bridge and tunnel of freeway is the potential high risk section of safety and efficiency. This paper focuses on the traffic operation risk assessment of Road Section with high rate of bridge and tunnel of freeway. Firstly, the average speed and coefficient of variation of speed are selected as the traffic operation risk index and treated as the independent variables...
To enhance protective effect of passive electromagnetic armor (PEA), the electrothermic action mechanism on the shaped charge jet (SCJ) in the PEA was researched. By building the kinematic model of uniformly elongating SCJ, and combined with the equivalent circuit model and action time model, coupled analysis model of electrothermic action on uniformly elongating SCJ in the PEA was established. Compared...
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