A vehicle is disclosed with a seating assembly which is capable of prompting an occupant to take an appropriate riding posture depending on the behavior of the vehicle body. A motorcycle includes tilting mechanisms for tilting seating surfaces of a front seat (rider seating part) and a rear seat (passenger seating part) and an ECU carries out a control process for tilting the seating surfaces to lift rear portions of the seats upwardly in response to an action to accelerate the motorcycle and a control process for tilting the seating surfaces to lift front portions of the seats upwardly in response to an action to decelerate the motorcycle.

The purpose of the present disclosure is to provide a bottom-plate structure, for a vehicle seat, that can be reinforced with a reduced increase in weight. A bottom plate covered with a surface material is provided on a vehicle body, and the top surface of the bottom plate supports a cushioning material. The bottom plate has reinforcing parts that cross the width-wise center of the bottom plate, at least parts of the reinforcing parts being laid out obliquely with respect to the front-to-back direction of a vehicle seat. Since the reinforcing parts reinforce the bottom plate, the bottom plate can be reinforced with a reduced increase in bottom-plate weight relative to conventional bottom-plate structures.

The purpose of the present disclosure is to provide a bottom-plate structure, for a vehicle seat, that can be reinforced with a reduced increase in weight. A bottom plate covered with a surface material is provided on a vehicle body, and the top surface of the bottom plate supports a cushioning material. The bottom plate has reinforcing parts that cross the width-wise center of the bottom plate, at least parts of the reinforcing parts being laid out obliquely with respect to the front-to-back direction of a vehicle seat. Since the reinforcing parts reinforce the bottom plate, the bottom plate can be reinforced with a reduced increase in bottom-plate weight relative to conventional bottom-plate structures.

A vehicle seat suitable as a straddle-type seat for a two or three-wheeled vehicle is provided, the straddle-type seat being configured to be shifted between a tip-up state and a seated state by a rotation mechanism, wherein there is no interference between the rotation mechanism and the seat. The vehicle seat of the present disclosure has a bottom plate, a seating portion, and a side portion. The seating portion and the side portion are covered by a surface material. In this vehicle seat configured to be shifted between the seated state and the tip-up state by the rotation mechanism, a recessed portion for the rotation mechanism is provided at the side portion facing the rotation mechanism.

A vehicle seat suitable as a straddle-type seat for a two or three-wheeled vehicle is provided, the straddle-type seat being configured to be shifted between a tip-up state and a seated state by a rotation mechanism, wherein there is no interference between the rotation mechanism and the seat. The vehicle seat of the present disclosure has a bottom plate, a seating portion, and a side portion. The seating portion and the side portion are covered by a surface material. In this vehicle seat configured to be shifted between the seated state and the tip-up state by the rotation mechanism, a recessed portion for the rotation mechanism is provided at the side portion facing the rotation mechanism.

A fuel tank and a seat assembly including the fuel tank is provided. The seat assembly includes a fuel tank, a seat frame securable to the fuel tank, and optionally a rear panel that supports a rearward portion of the seat frame. The seat assembly may define a chamber between the fuel tank and the rear panel. The seat frame is removably secured to one or both of the rear panel and the fuel tank. The fuel tank and rear panel may define a v-shape capable of distributing the rider load.