A Method of Intersection Arrival Rate Estimation Based on Sampling Trajectory Data
A trajectory data and intersection technology, applied in the field of urban traffic information, can solve problems such as traffic demand and application scenario sensitivity, and achieve a wide range of applications, strong generality, and good scalability.
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[0058] Such as Figure 4 As shown, the present invention provides a method for estimating the arrival rate of intersections based on sampled trajectory data, by using sampled vehicle trajectory data to obtain the arrival flow of each cycle, including the following steps:
[0059] 1) Obtain sampled vehicle trajectory data, and calculate the arrival rate between queuing trajectories and preprocess it into an arrival rate matrix:
[0060] Such as figure 1 As shown, the position information of the sampled trajectory data passing through the intersection entrance is preprocessed into the relative distance from the stop line, and the speed of each trajectory point is used to judge whether the vehicle is stopped at this point, so as to obtain the The key point for queuing vehicles to join the queue. For the interval between two adjacent queuing trajectories in each period, the arrival rate of the interval can be calculated as follows:
[0061]
[0062] Among them, j is the cycl...
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