Cellular Automaton Models of Highway Traffic Flow Considering Lane-Control and Speed-Control

As two kinds of management modes of highway tramc control, lane-control, and speed-control produce different effect under different conditions. In this paper, traffic flow cellular automaton models for four-lane highway system with two opposing directions under the above two modes are established considering car and truck mixed running. Through computer numerical simulating, the fundamental diagrams with different parameters are obtained, and after the analysis of density-flux diagrams, the variation discipline of flux with traffic density under different control models is gained. The results indicate that, compared with lane-control, utilization ratio of road can be further improved with speed-control when the truck number increases. The research result is of great significance for reasonable providing theoretical guidance for highway traffic control.

全印展之CTP设备篇

富士Luxel Vx9600紫激光CTP Luxef Vx9600型内鼓式紫激光直接制版机有8种分辨率供选择,最低为1 200dpi最高为3657dpi。它可对纸张叼口尺寸小于2mm的版成像,最大印版尺寸为1 160mm×960mm,有效图像面积为1 158mm×957mm。该机采用一个激光器时,制版速度为每小时19张版。