Patent ID: 11938938
Assignee: BRIDGESTONE CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  G  Y | IPC B  G

Claim 11:
12. A vehicle adapted for conducting a tire noise test during an automatic driving of the vehicle, comprising:
a prime mover; and
a control unit including at least one processor configured to, when the vehicle reaches a predetermined position or reaches a predetermined speed, put the vehicle into coast-traveling with the prime mover in a non-driving state,
wherein the control unit is further configured to:
subtract a vehicle speed at a starting point of a tire noise measuring zone, from a vehicle speed at the time point of starting the coast-traveling, thereby calculating a speed reduction amount when a first tire noise test has been conducted; and
add a preset speed at the start point of the zone for measuring the tire noise in a next tire noise test and said speed reduction amount, thereby to calculate the predetermined speed for a next tire noise test.