Method for predicting influence of vehicle lane change on traffic efficiency

Abstract

The invention discloses a method for predicting the influence of vehicle lane change on traffic operation efficiency, which relates to the field of traffic control, and comprises the following that firstly, vehicle lane change trajectory data are extracted, the trajectory data are analyzed, vehicle lane change behaviors are extracted, and variables of vehicle interaction in lane change are determined; microscopic traffic variables are used to predict the flow change of the vehicle lane change influence (LCI), a comprehensive calculation method is provided to predict the influence of the change of the traffic volume on the traffic operation efficiency, a regression support vector machine (SVR) model is established, the SVR model is used to predict the flow change of the LCI, and finally sensitivity analysis is carried out on the FC (flow change model) to determine that the method is effective in traffic efficiency prediction. The method can help to predict the flow change influence caused by the lane change of the vehicle, and formulate the optimal lane change strategy, thereby improving the operation efficiency of the road traffic.

Description

technical field [0001] The invention relates to the field of traffic control, in particular to a method for predicting the impact of vehicle lane change on traffic efficiency. Background technique [0002] With the rapid increase of expressway construction mileage and the rapid growth of car ownership in my country, the traffic demand is also increasing, and the rapidly increasing traffic flow has increased the pressure on roads. The traffic capacity of some expressway sections can no longer meet the existing demand, especially during holidays, which reduces the operating efficiency of the entire expressway network. When the expressway traffic demand is greater than the capacity, it will lead to expressway traffic congestion, which not only affects the expressway traffic efficiency, but also increases the conflict between vehicles. Therefore, finding a reasonable prediction method to ensure the efficient operation of the expressway is the primary problem that needs to be so...

AI Technical Summary

Problems solved by technology

[0003] Lane change maneuvers on highways can cause disruption to traffic flow, especially in congested conditions, thereby negatively impacting traffic operations

Vehicle lane changes have higher requirements on the driver's ability to judge, respond and operate. Some unreasonable lane changing behaviors and bad habits will cause changes in traffic efficiency.

Previously, many studies applied empirical vehicle trajectory data to assess the impact of lane changes on traffic operations, and calculated the shock propagation and flow changes caused by lane changes, but this did not consider the influence of microscopic traffic parameters before lane changes, and the prediction results were not accurate. precise

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