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The relationship between the opposing left-turn conflict and the traffic participants was analyzed in this study. Based on the traffic conflict technology, the image data were collected in a real traffic situation. The relationship was investigated under two different conditions. The number of opposing left-turn conflicts was positively correlated with the number of left-turn vehicles while the ratio of left-turn vehicles to opposing vehicles was less than 1, and showed a positive correlation with the number of opposing-through vehicles when the ratio of left-turn vehicles to opposing vehicles was more than 1. In other words, the opposing left-turn risk was positively correlated with the number of the minor traffic participants, which had a negative effect on the whole traffic system operation. 相似文献
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应用HS2000分布式控制系统丰富的软件功能,根据工艺特性,设计了一套软件程序,它可依据水温的不同,选择风机的开、停及变频的工作状态,并且对风机实现监控和保护。 相似文献
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文章介绍了由HS2000分散控制系统与三菱变频调速器A240相配套作为控制核心,针对工艺特性设计了一套根据水温的不同,用一台变频调速器依次调节三台风机的软、硬件控制系统,从而实现了循环冷水温度的稳定控制。 相似文献
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The desired speed will help the drivers control their driver behavior that could directly influences the traffic safety.This paper presents a basic definition of a driver’s desired speed,and analyzes the effects of road geometer parameter,driver behavior and vehicle performance on the desired speed.By setting the familiar horizontal curve as the research environment,the generating process of the desired speed was described.Then,combined with the desired trajectory,the effect of driver’s identification of vehicle dynamic on the desired speed was highlighted.Based on the vehicle dynamic theory,a desired speed model that consisted of the desired trajectory,the driver’s experience and vehicle parameter was established and numerically analyzed. 相似文献
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