Method for calculating delays in intersection based on motorcade following theory

Abstract

The invention discloses a method for calculating delays in an intersection based on the motorcade following theory. The method includes the steps of firstly establishing a basic assumption, then collecting traffic characteristic data, intersection geometrical parameters, vehicle power, geometrical parameters and signal control schemes, marshalling the collected data into parameters needed in an algorithm, dividing vehicles into three sets according to the different states of the vehicles when the vehicles pass the intersection in a period based on the traffic engineering theory, utilizing the input data to judge respective duration of three sets of traffic flow inputs according to discriminant in the algorithm, then further calculating delay time of vehicles belonging to each set, calculating delays in all entrance channels respectively with combination of the distribution of the traffic flow inputs, then obtaining total delay of the intersection, and eventually adding or subtracting factors in the calculation result combining with the practical situation, and modifying the calculation result. The method has the advantages of being high in applicability, clear in parameters, large in calculated amount, suitable for being combined with computer programming, and capable of being further applied to an intersection signal control timing scheme.

Description

Technical field [0001] The invention is a field of traffic engineering and traffic information and control systems, and it involves a cross -port delay calculation method based on the theory of the team and Chi. Background technique [0002] Due to the cross -circuit and flow of people in different directions at the intersection, crowds, collisions, chaos, and even cause traffic accidents often occur.In order to solve the traffic conflict of the intersection, ensure pedestrians and driving safety, the cross -port order needs to be controlled.The traffic signal control is separated from time to conflict traffic flow, which has achieved the above purposes.However, the traffic flow is given the right to pass in order. The vehicle has to pass temporarily parking or deceleration to observe the order, that is, relative to the traffic status of the vehicle in the road section, the vehicle will generate delays at the intersection.Oral signal control schemes will increase delays and reduc...

AI Technical Summary

Problems solved by technology

However, starting from the average delay of a single vehicle, and taking the comparative relationship between demand and capacity as the basis to calculate the delay of individual vehicles, a large number of empirical correction coefficients are introduced, resulting in large errors in the results, and there must be some differences between the analysis results and the actual road operation status. It is also difficult to provide accurate decision-making assistance for traffic control

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