Vehicle regulating and controlling method for reducing traffic accidents under raining conditions

A technology for traffic accidents and vehicle control, applied in collision avoidance systems and other directions, can solve problems such as the prevention and reduction of traffic accidents in rainy days

Active Publication Date: 2013-07-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing methods for preventing traffic accidents in rainy days are relatively simple, and it is difficult to effectively prevent and reduce traffic accidents in rainy days.

Method used

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  • Vehicle regulating and controlling method for reducing traffic accidents under raining conditions
  • Vehicle regulating and controlling method for reducing traffic accidents under raining conditions
  • Vehicle regulating and controlling method for reducing traffic accidents under raining conditions

Examples

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Embodiment

[0050] Utilize the real traffic flow parameters and meteorological data on the I-880 road in California, U.S.A. to test the performance of the present invention in the real-time prediction of traffic accidents in rainy weather conditions. Collected data includes upstream traffic occupancy average x 1 , the variance x of the average upstream traffic occupancy rate 2 , the absolute value x of the speed difference between the upstream and downstream vehicles 3 and rainfall intensity x 4 .

[0051] There are 101 traffic data samples of the accident group and 1010 traffic data samples of the normal group (that is, data collected under rainy conditions without traffic accidents). Randomly select 80 accident group traffic data samples and 800 normal group traffic data samples from the whole sample as the training set. The remaining 21 accident group traffic data samples and 210 normal group traffic data samples are used as a detection set to test the prediction accuracy of the pr...

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Abstract

The invention discloses a vehicle regulating and controlling method for reducing traffic accidents under raining conditions. The vehicle regulating and controlling method includes the following steps: a step 10 is that traffic accident information about an accident section is obtained; a step 20 is that accident group traffic data and weather data under the raining conditions are collected; a step 30 is that normal group traffic data and weather data under the raining conditions are collected; a step 40 is that a traffic flow data overall sample under the raining conditions is established; a step 50 is that an initial traffic accident probability relational expression is established; a step 60 is that a calibrated traffic accident probability relational expression is established; a step 70 is that the probability of occurrences of traffic accidents under the raining conditions is detected, and vehicles are regulated and controlled; and a step 80 is that the step 70 is repeated, the traffic flow parameter and information about the rainfall intensity in a next preset time T are collected, and the judgment on the probability of the occurrences of the traffic accidents on the accident section is carried out until the detection is finished. Through the vehicle regulating and controlling method, the probability of the occurrences of the traffic accidents on a high-speed road under the raining conditions can be detected in real time, the vehicle can be regulated and controlled, and therefore the traffic accidents are reduced.

Description

technical field [0001] The invention belongs to the field of intelligent management and control of vehicle traffic on urban express roads, and in particular relates to a vehicle control method for reducing traffic accidents in rainy weather. Background technique [0002] Driving safety in rainy weather has always been a hot issue in traffic safety. Rainy weather will not only significantly affect the driver's reaction time, for example, in rainy days, due to poor vision, the driver needs a longer time to identify the distance of the vehicle in front; and the wet road surface will reduce the friction between the wheels and the road surface, As a result, drivers need a longer distance to slow down, so traffic accidents are more likely to occur in rainy days, and traffic accidents in rainy days are more serious and often involve casualties. According to the "Annual Report on Traffic Accident Statistics of the Ministry of Public Security of the People's Republic of China", in 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16
Inventor 徐铖铖刘攀王炜李志斌
Owner SOUTHEAST UNIV
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