A novel jacket garment worn by the driver of a tandem vehicle, such as a motorcycle, intended for rear passenger safety is disclosed. The novel garment comprises an outer shell, an inner lining, and an internal frame structure. The internal frame structure comprises a ribbing nexus comprising horizontal and vertical members. Novel features include handgrips disposed inside front pockets and connected to the internal frame structure. In some embodiments, the internal frame structure comprises elastic members. Pocket-borne handgrips may be attached to elastic members so that when engaged by a rear tandem passenger, the internal frame structure is tightened against the tandem vehicle driver's body to provide stain relief and additional stabilization of the jacket as a passenger safety device.