Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Urban discrete transportation network design method based on active safety

A traffic network and active safety technology, applied in the field of traffic engineering, can solve problems in the infancy stage

Inactive Publication Date: 2018-10-19
SOUTHEAST UNIV
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the emerging concept of traffic safety planning has grown rapidly, it is still in its infancy

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
  • Urban discrete transportation network design method based on active safety
  • Urban discrete transportation network design method based on active safety
  • Urban discrete transportation network design method based on active safety

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Below in conjunction with accompanying drawing of description, the present invention will be further described:

[0031] Step 1: Active safety evaluation method based on speed coordination

[0032] The traffic safety evaluation based on speed coordination uses speed as the medium, and considers that speed is a representation of objective conditions such as roads and road networks. Generally speaking, the coordination of operating speed is an index to evaluate the consistency of alignment design, which has the following two meanings: ① the operating speed of the same road section is consistent with the design speed; ② the operating speed of adjacent road sections is consistent. Among them, the speed difference of adjacent road sections is a key parameter to ensure the quality of network design, that is, to ensure that drivers in the same road network can drive in a coherent manner, avoid or minimize operating errors, and improve safety. The "Highway Project Safety Evalu...

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 provides an urban discrete transportation network design method based on active safety. Transportation safety is affected by each stage of transportation system planning, design, construction and operation, the profound influence of transportation planning on shaping the transportation system is considered, and transportation safety should be paid enough attention to in the transportation planning stage. The urban discrete transportation network design method adopts speed coordination as a substitute index of a network security level, establishes a double-layer planning model ofurban discrete transportation network design, and advances active safety evaluation to a road network planning stage. The main steps include: (1) determining an active safety evaluation method based on speed coordination; (2) establishing the double-layer planning model of urban discrete transportation network design, in the model, upper level planning taking network security as a policy objectiveand lower level planning taking user equilibrium as behavior reaction of a policy; (3) adopting an iterative optimization algorithm to solve the model; and (4) describing specific embodiments based on a Nguyen-Dupuis network frequently used in transportation network analysis.

Description

Technical field: [0001] The invention relates to an active safety-based urban discrete traffic network design method, which belongs to the technical field of traffic engineering. Background technique: [0002] Traditional traffic safety management is to diagnose and identify dangerous road sections and accident black spots through statistical analysis of a large number of accidents during road operation, and then propose corresponding improvement measures. Usually, it is affected by problems such as huge reconstruction costs, difficulty in collecting accident data, and the accuracy of data, and has little effect. At the same time, because post-event remedial measures are mostly limited to traffic engineering methods, the improvement effect on many dangerous road sections caused by road planning and design and other factors Poor, can not fundamentally solve the problem of frequent traffic accidents. With the research on passive traffic safety, people began to realize that if...

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
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/26G06Q50/30
CPCG06Q10/047G06Q10/0637G06Q10/06393G06Q50/265G06Q50/40
Inventor 林宏志褚晨予
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com