This paper describes how a combined modeling and simulation study was successfully executed for the design of a toll booth. As to the traffic congestion of toll booth system, according to the input and output of the whole system, the authors develop an optimizing model for toll system with "QR-CODE based Development of Automatic Intelligent Assistants System & Security " This model is able to solve the problem and gain the optimization solution rapidly. It’s based smart QR-CODES has been used for self payment service. Vehicle like car, trucks or a trailer trucks does not possess similar weight. This concept has been implemented with the use of Different QR-CODES to determine the vehicles weight and accordingly defining the vehicles type & it’s making type with full data of driver also. This Automatic Intelligent Assistants System & Security system will be a state of the art technology for the areas with high traffic in toll booth by omitting long queues and fuel wastage for the users and also reducing human error.