Vehicle driving system and method
First Claim
1. A vehicle driving system for a vehicle having at least two operation modes that includes a set mode of setting a target speed and starting drive control of the vehicle according to the target speed and a resume mode of restarting the drive control of the vehicle according to the target speed set in the set mode, the vehicle driving system comprising:
- recommended travel speed acquiring means for acquiring a recommended travel speed that is recommended in a road on which the vehicle is traveling; and
setting means that, in restarting the drive control of the vehicle in the resume mode, compares the target speed set in the set mode with the recommended speed acquired by the recommended travel speed acquiring means, and sets a smaller speed as the target speed used for performing the drive control of the vehicle.
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Accused Products
Abstract
When a drive control operation is set, a vehicle driving system sets a travel speed of a vehicle as a target travel speed, stores it as a set travel speed and starts drive control of the vehicle. When the drive control operation is resumed, the vehicle driving system compares the set travel speed stored in a memory and a recommended speed of a road on which the vehicle is traveling. When the recommended speed is smaller than the set travel speed and a speed limit change flag is kept reset, the vehicle driving system sets the recommended speed as the target travel speed, and restarts the drive control of the vehicle. When the recommended speed is larger than the set travel speed and at the same time the speed limit change flag is kept reset, the vehicle driving system sets the set travel speed as the target travel speed, and restarts the drive control of the vehicle.
24 Citations
16 Claims
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1. A vehicle driving system for a vehicle having at least two operation modes that includes a set mode of setting a target speed and starting drive control of the vehicle according to the target speed and a resume mode of restarting the drive control of the vehicle according to the target speed set in the set mode, the vehicle driving system comprising:
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recommended travel speed acquiring means for acquiring a recommended travel speed that is recommended in a road on which the vehicle is traveling; and
setting means that, in restarting the drive control of the vehicle in the resume mode, compares the target speed set in the set mode with the recommended speed acquired by the recommended travel speed acquiring means, and sets a smaller speed as the target speed used for performing the drive control of the vehicle. - View Dependent Claims (2, 3)
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4. A vehicle driving system for a vehicle having at least two operation modes that includes a set mode of setting a target speed and starting drive control of the vehicle according to the target speed and a resume mode of restarting the drive control of the vehicle according to the target speed set in the set mode, the vehicle driving system comprising:
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acquiring means for acquiring a road attribute including a recommended travel speed that is recommended in a road on which the vehicle is traveling; and
setting means that, in a case where a road attribute of a road on which the vehicle was traveling when the drive control of the vehicle was performed last time differ from a road attribute of a road on which the vehicle is traveling when the drive control of the vehicle is started or restarted this time, compares the target travel speed being set or the target travel speed having been set in the set mode with the recommended travel speed included in the road attribute acquired by the acquiring means, and sets a smaller speed as the target travel speed used for performing the drive control of the vehicle. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A vehicle driving system for a vehicle having at least two operation modes that includes a set mode of setting a target speed and starting drive control of the vehicle according to the target speed and a resume mode of restarting the drive control of the vehicle according to the target speed set in the set mode, the vehicle driving system comprising:
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acquiring means for acquiring a road attribute of a road on which the vehicle is traveling; and
prohibiting means that prohibits a restart of the drive control of the vehicle, when the road attribute of a road on which the vehicle was traveling when the drive control of the vehicle was executed in the set mode differ from the road attribute of the road on which the vehicle is traveling when the drive control of the vehicle is restarted in the resume mode. - View Dependent Claims (13)
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14. A vehicle driving method for a vehicle comprising:
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setting a target travel speed upon instruction from a driver;
starting drive control of the vehicle to automatically attain the target travel speed; and
resuming the drive control of the vehicle to automatically attain the target travel speed upon instruction from the driver after the step of starting drive control is terminated once, wherein the step of resuming includes steps of acquiring a predetermined attribute of a road on which the drive control is to be resumed, checking, based on the predetermined attribute, whether the target travel speed is appropriate for resuming the drive control on the road, and lowering the target travel speed when the checking step determines that the target travel speed is in appropriate. - View Dependent Claims (15, 16)
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Specification