Unlock instant, AI-driven research and patent intelligence for your innovation.

Parameter calibration method of highway ramp simulation model

A technology of expressways and simulation models, applied in the field of traffic simulation, can solve problems such as not being able to describe road traffic conditions well, and achieve accurate simulation results

Active Publication Date: 2016-04-13
SOUTHEAST UNIV
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, engineering practice shows that the traditional highway ramp model parameter calibration process only for vehicle operation simulation cannot describe the actual road traffic operation conditions well, especially in terms of driver behavior and traffic conflicts between vehicles. defect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Parameter calibration method of highway ramp simulation model
  • Parameter calibration method of highway ramp simulation model
  • Parameter calibration method of highway ramp simulation model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0030] A method for calibrating parameters of an expressway ramp simulation model, the method comprising the steps of:

[0031] Step (1), data collection, using the collected data to establish the VISSIM simulation model of the highway ramp.

[0032] Collect geometric dimensions of expressway main road, traffic flow on expressway main road, speed of expressway main road, ratio of large and small vehicles on expressway main road for 2 working days and 2 hours each at a ra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a parameter calibration method of a highway ramp simulation model. The method comprises the following steps of: (1) carrying out data collection, and building a highway ramp VISSIM simulation model; (2) carrying out sensitivity analysis on parameters contained in a vehicle following model, a lane transformational model and a prior rule model in the highway ramp VISSIM simulation model built in the step (1); (3) carrying out parameter calibration; and (4) carrying out model validation. The parameter calibration method provided by the invention not only comprises a step of calibrating parameters that influence vehicles travelling and driver behaviors in the VISSIM, but also comprises a step of calibrating parameters that influence simulation conflict types and times in the VISSIM and an SSAM (Surrogate Safety Assessment Model).

Description

technical field [0001] The invention belongs to the field of traffic simulation, and in particular relates to a method for calibrating parameters of an expressway ramp simulation model by using microcosmic simulation software VISSIM and conflict analysis software SSAM. Background technique [0002] In the field of traffic engineering, the increasingly mature microscopic simulation technology has been widely used, especially in the research of expressway ramps, and gradually formed a parameter calibration process that uses microscopic simulation technology to simulate the actual traffic conditions of expressway ramps. However, engineering practice shows that the traditional highway ramp model parameter calibration process only for vehicle operation simulation cannot describe the actual road traffic operation conditions well, especially in terms of driver behavior and traffic conflicts between vehicles. defect. Contents of the invention [0003] The technical problem to be ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 刘攀俞灏樊蓉陈昱光郭延永羊钊张鑫段荟
Owner SOUTHEAST UNIV