A device (e.g., a car seat cover) provided with a vibrating warning system for signaling a condition of direction indicators has a seat cover, a support base, a plurality of flat bases on right and left sides of the support base, each one provided with at least one vibrating motor, and an electronic control unit provided with a connector for connecting the electronic control unit to a car control unit, and configured to receive by the car control unit a signal relating to the condition of the direction indicators, and to operate as a function of the signal the vibrating motors associated to the flat bases arranged on a same side as an active direction indicator. A plurality of pressure sensors connected to the electronic unit is provided at a perimeter of the support base, each one configured to transmit a signal indicating presence or not of weight of a driver on a corresponding position of the seat cover.

This application discloses a rear-seat cover for a vehicle. The rear-seat cover comprises a seat-protecting portion, a backrest portion, a first connecting member, and a second connecting member. The backrest portion includes multiple sub-backrest units arranged sequentially along the length of the backrest portion, adjacent sub-backrest units being detachably connected. The angle between each pair of adjacent sub-backrest units adjusts in concert with the adjustment of the corresponding rear-seat backrest position, enabling the sub-backrest units to be detached and their angles changed to accommodate rear-seat backrest adjustments. This arrangement avoids inability to detach the sub-backrest units and improves the convenience of using the rear-seat cover. A vertically offset elastic-band fastening buckle is provided between the backrest portion and the seat-protecting portion; the fastening buckle connects respectively to the backrest portion and to the seat-protecting portion to adjust the height of the backrest portion relative to the vehicle's rear-seat backrest position.