| 摘要 |
PROBLEM TO BE SOLVED: To improve a riding sensation by a method wherein frequent acceleration and deceleration in the longitudinal direction of a car body when an own car is run approximately at a first target car speed following a preceding car. SOLUTION: The first target car speed of an own car set by a car speed setting part 27 for constant speed running and the second target car speed of an own car set by a car speed setting part 28 for an intercar distance are compared with each other a controlled is effected that a lower car speed is set to the final target car speed of the own car. When the final target car speed of an own car is switched to a second target car speed so that deceleration from a first target car speed V1 is effected and a target intercar distance is adjusted to a given value, control is performed that the present final target car speed of the own car is not switched in a range from V1 to V1-α. When the final target car speed of the own car is switched so that acceleration from the second target car speed is effected and a car speed is adjusted to the second target car speed, control is effected that the present final target car speed of the own car is got switched in a range of from V1 to V1+α.
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