Method for predicting vehicle delay through lane division in real time based on IQA

A prediction method and lane-dividing technology, applied in the field of intelligent transportation, can solve problems such as restricting the use of models, difficulty, and inability to respond to random traffic demands.

Active Publication Date: 2019-01-11
KUNMING UNIV OF SCI & TECH +1
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Problems solved by technology

Intersection delays mainly come from parking queues, and a large part of the delay estimation based on queue length in adaptive signal control systems comes from Webster's theory and equations, stochastic queuing theory, queuing vehicle delays and time-dependent delay formulas, such models It is often suitable for long-term (multi-period) delay estimation, which is not conducive to short-term (single-period) delay calculation, and cannot respond to ...

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  • Method for predicting vehicle delay through lane division in real time based on IQA
  • Method for predicting vehicle delay through lane division in real time based on IQA
  • Method for predicting vehicle delay through lane division in real time based on IQA

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Embodiment 1

[0044] Embodiment 1: a kind of IQA-based real-time lane-dividing vehicle delay prediction method, such as figure 1 shown, including:

[0045] Step 1: Take the time when a valid green light of lane i ends and there is no remaining queuing time as the start time of delay prediction; the delay is divided into two parts for calculation: the first part is the delay between the end time of a valid green light and the end time of a valid red light; The second part is the delay within the time period from the end of the effective red light to the end of the effective red light to the time when the maximum queuing length appears;

[0046]Step 2: Calculate the delay of the first part of the nth cycle of lane i (from the end of the effective green light to the end of the effective red light) delay

[0047] Step 3: Calculate the delay of the second part of the nth cycle of lane i (from the end of the effective red light to the time when the maximum queuing length appears) and with ...

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Abstract

The invention relates to a method for predicting vehicle delay through lane division in real time based on IQA, and belongs to the technical field of intelligent transportation. The invention constructs an IQA delay polygon based on a method for predicting the queue length through lane division in real time and the traffic wave theory, and predicts the vehicle delay through the lane division in real time. By predicting IQA in advance, the defect that the real-time data is difficult to obtain when IQA is used for delay calculation in the past is made up, and the accuracy of the delay calculation is improved. According to the method for predicting vehicle delay through lane division in real time based on IQA, vehicle delay information can be obtained in advance by lane division, and passivedelay estimation is changed into active delay prediction, thereby facilitating the signal optimization design for relevant intersections or crowded roads in advance, so that the purpose of alleviatingthe traffic congestion and improving the travel environment can be achieved.

Description

technical field [0001] The invention relates to an IQA-based real-time lane-divided vehicle delay prediction method, which belongs to the technical field of intelligent transportation. Background technique [0002] Delay is an important parameter in traffic signal timing optimization and LOS estimation at signalized intersections, but it is also a difficult parameter to estimate. Intersection delays mainly come from parking queues, and a large part of the delay estimation based on queue length in adaptive signal control systems comes from Webster's theory and equations, stochastic queuing theory, queuing vehicle delays and time-dependent delay formulas, such models It is often suitable for delay estimation based on long-term (multi-period) units, which is not conducive to short-term (single-period) delay calculation, and cannot reflect random traffic demand. Based on the above model, the Incremental Queue Accumulation (IQA) delay estimation method is a new delay estimation ...

Claims

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Application Information

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IPC IPC(8): G08G1/01
CPCG08G1/0125G08G1/0137
Inventor 李冰成卫袁满荣
Owner KUNMING UNIV OF SCI & TECH
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