| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology by which information capable of determining whether or not driving for improving the degree of economical traveling under the influence of a preceding vehicle is possible, is advised to a driver of a vehicle.SOLUTION: The degree of economical traveling of the preceding vehicle Ca traveling in front of one's own vehicle C is obtained so that a driver can determine whether or not driving for improving the degree of economical traveling under influence of the preceding vehicle Ca is possible by advice informing of the degree of economical traveling of the preceding vehicle Ca to the driver of one's own vehicle C, and advice on the degree of economical traveling of the preceding vehicle is performed by an advice part mounted so as to compare the degree of economical traveling to one's own vehicle. |
