Title :
A coordinated control framework and algorithm used for relieving traffic congestion in the scope of exit-ramp of the expressway and its downstream intersection
Author :
Li, Honghai ; Yuan, Changliang ; Zhang, Jisheng
Author_Institution :
Res. Inst. of Highway, Minist. of Transp., Beijing, China
Abstract :
The paper proposed a new coordinated control framework and algorithm used for relieving traffic congestion in the scope of exit-ramp of the expressway and its downstream intersection. The queue of auxiliary convergence road is selected as monitoring variable in the coordinated control algorithm, and downstream intersection cycle, split and auxiliary road green time are calculated. The control variables small-step adjustment algorithm is presented. The throughput flow duration of exit-ramp by the coordinated control strategy decreases at least 10% than by the fixed control algorithm. Combined with road network delay data, the simulation results show the effectiveness of the coordinated control algorithm.
Keywords :
computerised monitoring; queueing theory; road traffic; traffic control; traffic engineering computing; auxiliary convergence road; auxiliary road green time; control variables; coordinated control algorithm; coordinated control framework; coordinated control strategy; downstream intersection; exit-ramp; expressway; fixed control algorithm; monitoring variable; queue; road network delay data; small-step adjustment algorithm; throughput flow duration; traffic congestion; Analytical models; Convergence; Queueing analysis; Roads; Timing; Vehicles; Control algorithm; Coordinated control; Cycle adjustment; Exit-ramp queue;
Conference_Titel :
Intelligent Control and Automation (WCICA), 2011 9th World Congress on
Conference_Location :
Taipei
Print_ISBN :
978-1-61284-698-9
DOI :
10.1109/WCICA.2011.5970566
