基于VanetMobiSim/NS-2的车辆换道模型仿真

高速公路上驾驶人换道行为容易导致车辆碰撞事故。利用车载自组网（Vanet）车车通信提醒驾驶人在换道过程中可能遇到的危险,但在真实环境中测试车载自组网难度大,代价高。Vanet-MobiSim和NS-2分别是优秀的交通、网络仿真器,两者联合可以为车载自组网提供真实可靠的微观仿真平台。文中结合开源的VanetMobiSim中的智能驾驶人换道模型——IDM_LC设计Vanet环境下的车辆换道模型,仿真产生不同车密度、车道数下的移动车辆Trace文件。将Trace文件导入开源的NS-2中进行仿真分析。结果表明,采用VanetMobiSim/NS-2联合仿真平台可以很好的模拟设计的不同情景下的车辆换道模型,车辆换道时的车车通信将使得车辆换道效率和安全性都得到提高。

Simulation of Vehicle Lane Change Model Based on VanetMobiSim/NS-2

Vehicle collisions are highly likely to happen when the driver changes the traffic lane on the freeway consciously.However,the V-V communication in Vehicle Ad-hoc Network（VANET） can remind the driver of the potential danger during this process.But the test of VANET in the real environment is both difficult and expensive.The excellent software,VanetMobiSim and NS-2,which are used as the transportation and network simulator respectively,can work together to provide Vanet with a real and reliable microscopic simulation platform.Firstly,the paper made use of the Intelligent Driver Model with Lane Changing（IDM_LC）in the open-source software,VanetMobiSim,which can generate the trace files of the moving vehicles at different vehicle densities and traffic lanes,to design a vehicle lane change model under Vanet.Then,the trace files were imported into the open-source software,NS-2,to simulate the communication part.It can be seen from the result that the simulation platform by combining VanetMobiSim and NS-2 proposed in this paper can simulate the lane change model designed before and get the different effects of lane change at different speed and acceleration,and verify that the V-V communication can boost the safety during the vehicle lane change.