Anti-rear-end-collision prompting system and method for driving at portal

Abstract

The invention discloses an anti-rear-end-collision prompting system for driving at a portal. The system is composed of a vehicle detecting node, a decision-making device and a suggested vehicle speedinformation prompting device. The vehicle detecting node is used for monitoring the driving speed of a vehicle closest to a portal within a preset detection road section range and a distance between the vehicle and the portal and transmitting the information to the information processing and decision-making device, wherein the preset detection road section is a road section extending from the portal with a preset detection length. The decision-making device calculates a suggested vehicle speed based on the driving speed from the vehicle detecting node and the distance between the vehicle and the portal. The suggested vehicle speed information prompting device arranged at a position at a distance with a preset safety length to the portal on the road section before the portal is used for carrying out information prompting of the suggested speed. According to the system disclosed by the invention, driving information of vehicles at the tunnel entrance and / or exit can be monitored and prompting information can be provided for the vehicle behind one vehicle, so that occurrence of a rear-end collision is reduced even when the driver of the rear vehicle is in a blind driving state.

Description

technical field [0001] The invention relates to the technical field of automobile safety driving protection, in particular to a driving anti-rear collision prompt system and method at a tunnel entrance. Background technique [0002] The entrance and exit sections of the tunnel are highway accident-prone sections. Due to the poor adaptability of the human eye to the light intensity, when entering the tunnel from outside the tunnel, it takes about 10 seconds for the human eye to enter the low-light environment from the strong light environment. time to adapt to changes in light intensity. At this time, it is basically impossible to see the vehicles in the tunnel. This period of time is equivalent to blind driving; when driving out of the tunnel, the human eye has to adapt to the strong light outside the tunnel. Due to the white hole effect, the visual field It will turn white for a short time, and you can hardly see the road and the vehicles ahead, which can easily lead to tra...

AI Technical Summary

Problems solved by technology

[0002] The entrance and exit sections of the tunnel are highway accident-prone sections. Due to the poor adaptability of the human eye to the light intensity, when entering the tunnel from outside the tunnel, it takes about 10 seconds for the human eye to enter the low-light environment from the strong light environment. time to adapt to changes in light intensity. At this time, it is basically impossible to see the vehicles in the tunnel. This period of time is equivalent to blind driving; when driving out of the tunnel, the human eye has to adapt to the strong light outside the tunnel. Due to the white hole effect, the visual field It will turn white for a short time, and you can hardly see the road and the vehicles ahead, which can easily lead to traffic accidents

In order to reduce traffic accidents such as vehicle rear-end collisions, the current method is to set speed limit signs at the tunnel entrance and turn on lights in the tunnel to make up for the lack of light, but these methods are less effective, especially when the sun is very strong in summer. When the hole effect and blinding effect are more prominent

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