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    					| Hardware-in-the-loop Simulation System for Multi-intersection Traffic Signal Control | 
  					 
  					  										
						| REN Yi-long1, YU Gui-zhen1, WANG Yun-peng1, LI Bin2, WU Jin-wu3 | 
					 
															
						1. School of Transportation, Science and Engineering Beihang University, Beijing 100191, China; 
2. Research Institute of Highway, Ministry of Transport, Beijing 100088, China; 
3. Shenzhen Electronic Travel Net Traffic Technology Co., Ltd., Shenzhen Guangdong 518040, China | 
					 
										
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													     		                            						                            																	    Abstract  To evaluate the performance of a traffic signal control system quickly and efficiently, a hardware-in-the-loop simulation system of multi-intersection traffic signal is developed. With the hardware-in-the-loop approach, a simulation model based on the microscopic traffic simulation software is established, and the real-time communication between the simulation software and the traffic signal controllers is achieved, altogether providing a realistic traffic control simulation environment to evaluate the performance of a multi-intersection traffic signal control system. A case study of Zhongguancun East Road along with the corresponding simulation results demonstrates that the hardware-in-the-loop system can evaluate not only the performance of various signal controllers, but also the performance of the traffic signal control system for multi-intersections quickly and efficiently.
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															    																	Received: 28 September 2013
																	    
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															| Fund:Supported by the National Natural Science Foundation of China(No.51278021);and National high-tech R&D Program of China (863 Program)(No.2011AA110306) | 
														 
																											    														
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																Corresponding Authors:
																REN Yi-long, yilong_ren@139.com
   
																																 E-mail: yilong_ren@139.com
															    													     		
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