Urban road intersection holographic three-dimensional dynamic analysis method

Abstract

The invention provides an urban road intersection holographic three-dimensional dynamic analysis method which comprises the following steps that (1) a three-dimensional space-time track of motor vehicles at an intersection is drawn utilizing time and space coordinates of the motor vehicles; (2) section analysis is carried out on the three-dimensional space-time track of the motor vehicles; (3) a space-time utilization rate model of the intersection is built according to a section analysis result, and operation efficiency of the intersection is analyzed according to the motor vehicle space-time utilization rate. According to the model dynamic analysis method, the concept of the motor vehicle three-dimensional space-time track is introduced, the urban road intersection motor vehicle three-dimensional space-time track is drawn from the aspect of the motor vehicle space-time resource occupation state, the motor vehicle three-dimensional space-time track can be used for displaying and analyzing the motor vehicle operation state within the whole intersection range at the same time, and therefore the urban road intersection holographic three-dimensional dynamic analysis model is built to evaluate the motor vehicle space-time utilization rate and the operation efficiency of intersections.

Description

technical field [0001] The invention belongs to the field of traffic operation and management at urban road intersections, and in particular relates to a holographic three-dimensional dynamic analysis method for urban road intersections. Background technique [0002] The basic starting point of urban road intersection planning and design is the integration of time and space, and the basic idea is the overall consideration of geometric channelization design and signal control. In the specific design, the traffic analysis and evaluation methods of motor vehicles are of great significance to the preliminary design of the intersection and the safety and efficiency evaluation after the design. However, the main core defects in the existing traffic analysis and evaluation methods at intersections are: [0003] (1) Existing traffic representation methods at intersections mainly use two-dimensional mapping method, which needs to cut the traffic flow, or reduce one dimension in spac...

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Problems solved by technology

[0003] (1) Existing intersection traffic performance methods mainly use two-dimensional mapping method, which needs to cut the traffic flow, or reduce one dimension in space, or reduce one dimension in time, and there is no three-dimensional mapping method;

[0004] (2) It can only analyze the instantaneous state of the entire intersection alone, or the running state of motor vehicles in one or several directions in space, and cannot simultaneously display and analyze the running state of motor vehicles within the entire intersection range;

[0005] (3) Lack of the function of analyzing the space-time resource occupancy status of motor vehicles at intersections, and the graph analysis method cannot be used to analyze the operation status of intersections from the perspective of space-time resource occupancy status;

[0006] (4) The existing spatio-temporal analysis methods of traffic engineering are mainly researched from two aspects of time (signal control) and space (channelization design), and it is impossible to directly evaluate spatio-temporal resources theoretically;

[0007] (5) Although the traffic capacity comprehensively considers time and space, it can only quantitatively describe the limit state of intersection operation, and cannot evaluate the utilization efficiency of space-time resources for intersections under different operating conditions; in addition, information such as vehicle traffic speed unable to reflect;

[0008] (6) Delay and traffic capacity are all based on the stop line, which cannot directly reflect the traffic operation status inside the intersection

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