Vehicle driving assistance apparatus and method
First Claim
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1. A driving assistance apparatus comprising:
- a means for estimating friction coefficient of a road that is currently being run by a vehicle;
a means for acquiring other vehicle data that includes existence of an oncoming vehicle in an opposite lane, and an arrival time of the oncoming vehicle to an intersection when the vehicle is waiting to turn;
a means for calculating a period of time for the vehicle to finish turning at the intersection, with a variable of estimated friction coefficient of the road; and
a means for assisting driving based on the other vehicle data and the period of time for the vehicle to finish turning.
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Abstract
A driving assistance apparatus assists turning operation of a vehicle at an intersection by taking critical variables into account. The apparatus first estimates friction coefficient of a road to determine a suitable acceleration in turning, and then calculates a required period of time to finish turning by using other variables such as a width of the road derived by one of the functions of the apparatus. Based on the comparison with the time that the oncoming vehicle in the opposite lane will take to arrive at the intersection and the required time for turning, driving assistance for the vehicle to turn safely at the intersection can be appropriately provided.
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Citations
10 Claims
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1. A driving assistance apparatus comprising:
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a means for estimating friction coefficient of a road that is currently being run by a vehicle;
a means for acquiring other vehicle data that includes existence of an oncoming vehicle in an opposite lane, and an arrival time of the oncoming vehicle to an intersection when the vehicle is waiting to turn;
a means for calculating a period of time for the vehicle to finish turning at the intersection, with a variable of estimated friction coefficient of the road; and
a means for assisting driving based on the other vehicle data and the period of time for the vehicle to finish turning. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle driving assistance method to turn on a road, the method comprising the steps of:
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acquiring information of a road and location of a vehicle;
determining surface condition of the road;
calculating time required to finish turning based on the acquired information and the surface condition when the vehicle is in the condition for turning;
determining whether and when a moving object in an opposite lane of the road arrives at the location;
determining a possibility of collision by comparing the arrival time of the moving object and the required time for the vehicle to finish turning; and
assisting a driver of the vehicle when the possibility of collision is determined. - View Dependent Claims (9, 10)
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Specification