Curve overtaking risk analysis method for semitrailer

Abstract

The invention provides a curve overtaking risk analysis method for a semitrailer. The curve overtaking risk analysis method for the semitrailer comprises the following steps: simplifying vehicle lane changing track to be a reverse convex curve formed by an easement curve, obtaining a semitrailer linear road segment overtaking track model, calculating elements, such as curve length, and obtaining a vehicle simulation path; according to a lateral load drift rate (LTR), judging safe conditions of the vehicle, simulating by using a ultrahigh transverse slope, a running speed, a vehicle turning radius and a road circular curve radius, and respectively performing orthogonal experiment to the four elements; relating a side turn risk indicator with four elements of the ultrahigh transverse slope, the running speed, the vehicle turning radius and the road circular curve radius; and performing regression analysis by using data regression analysis software, and obtaining a forecasting model of vehicle curve overtaking risk. The curve overtaking risk analysis method for the semitrailer is capable of, through building the forecasting model of the vehicle curve overtaking risk and analyzing the risk of the semitrailer curve overtaking, ensuring the traffic safety of the semitrailer in the curve running.

Description

technical field [0001] The invention belongs to the technical field of automobile overtaking risk analysis, and relates to a semi-trailer overtaking risk analysis method on a curved road. Background technique [0002] Most of the existing researches are on the semi-trailer driving on curves, and do not consider the behavior of changing lanes and overtaking on curves. It is generally believed that within a certain range, the h The larger the value is, the more favorable it is for the car to run on a curve, but when the car overtakes on a circular curve with a superelevation, it will experience an anti-superelevation during the turning and lane change process, and the existence of the anti-superelevation will aggravate the rollover of the vehicle , it is very dangerous for a vehicle changing lanes on a curve. In order to further ensure the traffic safety of trailers driving on curves, it is necessary to study an analysis method for overtaking risk of semi-trailers on curves. ...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing researches are on the semi-trailer driving on curves, and do not consider the behavior of changing lanes and overtaking on curves. It is generally believed that within a certain range, the h The larger the value is, the more favorable it is for the car to run on a curve, but when the car overtakes on a circular curve with a superelevation, it will experience an anti-superelevation during the turning and lane change process, and the existence of the anti-superelevation will aggravate the rollover of the vehicle , which is very dangerous for vehicles changing lanes on curves

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