A recreational off-highway vehicle includes side-by-side passenger and driver seats held within a chassis. The seats sit low in the chassis and are covered by a roll cage. Grab handles are positioned on the sides of the passenger seat. Select large round tubing protects the vehicle, while rectangular tubing frames the portions of the vehicle beneath body panels. The vehicle is powered by an engine rearward of the seats that is connected to a transaxle. A radiator is positioned above the engine. The vehicle is suited for rough terrain travel.

A rollover protection device (1) for a passenger car has a supporting device (3) that extends vertically when installed properly. A crossmember (5) is secured on the supporting device (3) and extends in a lateral direction (4) when installed properly. The crossmember (5) is of beam-shaped design and comprises a die-cast, low-pressure die-cast or forged unit (6).

An automotive chassis which has an H-shaped base mounted to a vehicle. An electric motor having a rotatable axis is mounted to a metal floor situated in a square, box-shaped center in the H-shaped base. A metal disk is coupled to the axis of the electric motor, and rotation of the axis of the electric motor causes rotation of the metal disk, creating a centrifugal force that stabilizes the vehicle.

A utility vehicle includes a chassis, and a ROPS provided on the chassis. The ROPS surrounds a cabin space of the vehicle. A center of gravity of the vehicle is located at a position of ⅓ or lower of the vehicle height, and an outline of the ROPS is formed in a curved shape when seen in the right and left direction or in the front and rear direction of the vehicle. Since the outline of the ROPS is formed in a curved shape, in the case of rollover of a vehicle body, the ROPS can easily roll on the ground surface. The combination of the configuration of the ROPS and the gravitational force exerted on the low position of the center of gravity, which is ⅓ or lower of the vehicle height, the vehicle body can be easily set up from the rolled over situation.

A vehicle rollover sensing system using driving information for optimization includes a longitudinal-velocity estimator determining a longitudinal velocity of a vehicle using a wheel speed, a steering angle, and GPS vehicle velocity information; a lateral-velocity estimator determining a lateral velocity of the vehicle using the longitudinal velocity, a yaw rate, a steering angle, a lateral acceleration, and GPS vehicle heading direction information; a rollover type determinater deciding a rollover type of the vehicle using the longitudinal velocity and the lateral velocity of the vehicle; and a restraint device deployment determinater determining whether or not to deploy a vehicle restraint device according to the decision by the rollover type determinater.

A motor vehicle for independent use by an individual in a wheelchair, comprising an open air vehicle body including a floor further comprising a front, a rear, and lateral sides, said floor sized and shaped to receive and retain a wheelchair; a motor; at least one front and at least one rear wheel supporting said vehicle body and floor, each of said front and rear wheels attached rotatably near an underside of a corner of the vehicle body; at least one actuator attaching said floor to said at least one rear wheel, wherein said floor can be lowered to a ground surface and raised to a level floor position; wherein a rear portion of said floor is structured to fold upward to form said rear side and fold downward to be in line with said floor; and a steering control assembly coupled to said at least one front wheel.

A roof airbag for vehicles and a control method to deploy the roof airbag are proposed. The roof airbag, which protects occupants by minimizing reduction of internal pressure of the airbag in an accident event in which a vehicle rolls over several times in sequence, includes: a main inflator and sub-inflator which generate gas; and a controller configured to ignite the main inflator to deploy an airbag cushion when a rollover accident of a vehicle occurs, and configured to ignite the sub-inflator to increase internal pressure of the airbag cushion when a secondary accident occurs following the primary rollover accident of the vehicle.

A recreational off-highway vehicle includes side-by-side passenger and driver seats held within a chassis that is approximately 50 inches wide. The seats sit low in the chassis and are covered by a roll cage. Grab handles are positioned on the sides of the passenger seat. Select large round tubing protects the vehicle, while rectangular tubing frames the portions of the vehicle beneath body panels. The vehicle is powered by an engine rearward of the seats that is connected to a transaxle. The engine and transaxle are isolation mounted together with a portion of the air intake assembly. The vehicle is suited for rough terrain travel.

A recreational off-highway vehicle includes side-by-side passenger and driver seats held within a chassis that is approximately 50 inches wide. The seats sit low in the chassis and are covered by a roll cage. Grab handles are positioned on the sides of the passenger seat. Select large round tubing protects the vehicle, while rectangular tubing frames the portions of the vehicle beneath body panels. The vehicle is powered by an engine rearward of the seats that is connected to a transaxle. The engine and transaxle are isolation mounted together with a portion of the air intake assembly. The vehicle is suited for rough terrain travel.

A operator protection apparatus unlocks and lowers from a raised position to a lowered position suitable for clearing a low hanging obstacle when an operator applies a force to an operator lever or pedal. The operator protection apparatus returns to the raised position when the operator ceases applying force to the operator lever or pedal.