Patent ID: 8919862

Claim:
A roof apparatus for a vehicle, comprising: first and second projecting members each mounted on a roof of the vehicle and each including an elongated shape, the first and second projecting members being arranged at first and second side end portions of the vehicle in a width direction of the vehicle, wherein a height of each of the first and second projecting members is equal to or greater than a height of an upper end of a boundary layer of an airflow flowing on the roof when the vehicle is traveling at at least some vehicle speeds, each of the first and second projecting members extends from a front end to a rear end of the roof in a front and rear direction of the vehicle, each of the first and second protecting members includes a first end portion positioned at a rear end of the vehicle and a second end portion positioned at a front end of the vehicle, and a distance between the first and second projecting members gradually increases from the first end portions to the second end portions.