Evaluation of Traffic Operation Status in Diverging Areas under Lane Control Measures

With the implementation of multi-lane highway lane control measures, lane-changing behavior has become more concentrated in the diverging area, so it is necessary to provide a dashed solid line in the diverging area to provide an interchangeable segment for passenger cars. A model of vehicle lane change trajectories in the diverging area is obtained through a driving simulation experiment, and the length of the dashed solid line is designed accordingly. Through traffic simulation experiments, five evaluation indicators, namely, average speed, average delay, lane-changing rate, number of rear-end conflicts, and number of lane-changing conflicts, are selected from the aspects of accessibility and safety. The evaluation system of the traffic operation status is constructed by using the Principal Component Analysis method. The evaluation system is applied through the actual reconstruction and expansion projects, and the optimal lane control measures are derived under the corresponding conditions.