Research On Running State Monitoring Method Of Signal Operation Of Highway Signal Based On Floating Vehicle

With the urban traffic problem increase rapidly,it is necessary to research on the operation of the network monitoring,which can provides us research methods and data support to solve the traffic problems,among the exists research methods.The running status of the road network can be divided into the running state of the road and the running status of the intersection,the research of road running state monitoring has been quite mature,the road travel time is obtained by cross section data to calculate running status indicators,then monitor and evaluate its running state;due to the role of signal timing,the intersection performance index is not that accurate,the intersection is the traffic hinge under the action of traffic demand and signal control,and the evaluation method is also different from the Road section evaluation method.Based on this phenomenon,this paper put forward a study on the operation condition monitoring of signalized intersection,on the one hand,the evaluation of the intersection operation result,that is,the intersection running state evaluation,on the other hand,the evaluation of the running reason,that is,the evaluation of the intersection signal,including the following research contents:(1)Data feature analysis and pretreatment.Firstly,the data of the original floating vehicle is analyzed,and the methods and steps of data preprocessing are proposed based on the data characteristics and the data requirement.(2)The signal control based on floating vehicle data is pushed back.After obtain the effective data,an effective red-time backstepping method based on the red-light-delay model is proposed,and the back-length and period of the effective green light are based on the time distribution of the stop line,and the backstepping results are analyzed with specific cases.(3)Research on on-line monitoring of signal control intersection operation state.Based on the thought of the research on the operation state of signalized intersection,this paper chooses the reasonable evaluation index and introduces the calculation method of the evaluation index.Based on the given time plan and the running state index of intersection,the evaluation scheme is proposed and the signal control intersection evaluation system is established.