Driving support device and driving support method

A driving assistance and vehicle driving technology, which is applied in the direction of instruments, traffic control systems of road vehicles, arrangement of variable traffic instructions, etc., can solve problems such as inability to accurately predict the status of signal machines

Active Publication Date: 2009-09-30
TOYOTA JIDOSHA KK
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AI Technical Summary

Problems solved by technology

In this way, in the prediction based on the current vehicle speed, the state of the signal at the time of entering the intersection may not be predicted with good accuracy.

Method used

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  • Driving support device and driving support method
  • Driving support device and driving support method
  • Driving support device and driving support method

Examples

Experimental program
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Embodiment Construction

[0038] Embodiments of the driving assistance device and the driving assistance method according to the present invention will be described below with reference to the drawings.

[0039] In the present embodiment, the driving assistance device and the driving assistance method according to the present invention are applied to a signal omission prevention device mounted on a vehicle. The signal omission prevention device according to the present embodiment issues a warning when it is predicted that the intersection is red when entering the intersection in order to prevent passing through the intersection under a red light. In this embodiment, there are two different methods of predicting future vehicle speed changes. The first embodiment considers the temporary acceleration zone (equivalent to a predetermined area) in front of the intersection to make predictions, and the second embodiment considers the driver's speed. Inherent driving behavior characteristics are predicted in a...

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Abstract

A driving support device and method which predicts the state of a traffic light with high accuracy of when a vehicle enters an intersection. The device is characterized by comprising vehicle speed variation predicting means for predicting a variation of the vehicle speed of a vehicle before the vehicle enters an intersection, and traffic light state predicting means for predicting the state of the traffic light before the vehicle enters the intersection on the basis of the predicted variation of the vehicle speed. The vehicle speed variation predicting means predicts a variation of the vehicle speed on the basis of information stored in storage means and including characteristics about the past driver's records of the variations of the vehicle speed before the vehicle enters the intersection and the travel environment associated with the characteristics and uses different methods for predicting a variation of the vehicle speed before the vehicle reaches a predetermined region which is present on this side of the intersection and after the vehicle passes the predetermined region.

Description

technical field [0001] The present invention relates to a driving assistance device and a driving assistance method for predicting the state of a traffic signal when a vehicle enters an intersection. Background technique [0002] There is a driving assistance device that outputs a warning to the driver or automatically brakes the vehicle before entering the intersection when the vehicle is predicted to be a red light (or yellow light) when entering the intersection with a signal. Move and so on. It is important in such a driving assistance device to predict the state of the signal when the vehicle is about to enter the intersection. Patent Document 1 discloses predicting the state of a signal when a vehicle is about to enter an intersection based on cycle information of the signal, the remaining distance of the vehicle to the intersection, and the current vehicle speed. In addition, Patent Document 2 discloses that the time required to pass through an intersection is estim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16G08G1/09G08G1/0968
CPCG08G1/096758G08G1/096783G08G1/16B60W30/16B60W30/18154G08G1/052G08G1/166
Inventor 横山明久松村健
Owner TOYOTA JIDOSHA KK
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