Safety detection method based on freeway geometry linear comprehensive technical indexes

A technology of highways and technical indicators, applied in the field of modern transportation, can solve problems such as the inability to effectively guarantee the safety of automobiles, and achieve the effect of avoiding limitations

Inactive Publication Date: 2010-04-14
TONGJI UNIV
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Problems solved by technology

[0003] However, research at home and abroad in recent decades has shown that only the single-phase independent index confor

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  • Safety detection method based on freeway geometry linear comprehensive technical indexes
  • Safety detection method based on freeway geometry linear comprehensive technical indexes

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Embodiment

[0033] The safety evaluation technology based on the comprehensive technical index of expressway geometry is mainly to predict the operating speed of the built or proposed expressway by using the established comprehensive model describing the spatial geometric characteristics of the highway alignment and the operating speed prediction model, and determine the characteristics of the operating speed. Index, according to the alignment design consistency evaluation method and evaluation standard, analyze the speed coordination and alignment design consistency of the expressway. The specific implementation methods are as follows:

[0034] (1) Determine the research road section. The research objects mainly include proposed and built expressways with 4 to 8 lanes. The vehicle types mainly include A-type vehicles (small passenger cars) and D-type vehicles (large trucks). , vertical and horizontal alignment design data and alignment index data.

[0035] (2) Arrange route design indica...

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Abstract

The invention relates to a safety detection method based on freeway geometry linear comprehensive technical indexes, comprising the following steps: determining distribution forms and feature parameters of end face vehicles speed; establishing a descriptive model to inform the freeway geometry linear comprehensive technical indexes; structuring a freeway operating vehicle speed predicting model according to the relationship between an operating vehicle speed and the linear comprehensive indexes; and structuring a freeway linear safety detection model according to the relationship between operating vehicle speed feature indexes and safety detection indexes. Compared with the prior art, the invention has the advantages of systematicness, universal applicability, maneuverability and the like.

Description

technical field [0001] The invention relates to the field of modern traffic technology, in particular to a safety detection method based on comprehensive technical indicators of expressway geometric alignment. Background technique [0002] In the human-vehicle-road system, the road, as the carrier of the whole system, plays a vital role, and the linear indicators of the road determine the safety and comfort of driving. Highway alignment is a collection of plane alignment, longitudinal alignment and cross section. At present, under the premise of satisfying the requirements of automobile kinematics and mechanics, our country adopts "calculated driving speed", that is, the design speed for route design. The calculated driving speed is a fixed value for a specific road section, which is used as a basic parameter to specify the The road section meets the minimum route technical indicators such as minimum curvature and minimum line of sight required for operational safety. Acco...

Claims

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Application Information

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IPC IPC(8): G08G1/01
Inventor 郭忠印孔令旗王琰阎莹杨漾周小焕
Owner TONGJI UNIV
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