Reinforced Impact Safety Evolution (RISE) or Realized Impact Safety Evolution is the brand name of Mitsubishi's patented safety body construction system.[1][2] It was first introduced in the 1996 Mitsubishi Galant.[1] Initially designed to improve passive safety, the system has subsequently been developed to electronically integrate every aspect of car's active and passive safety features.
RISE is a monocoque body system that combines an energy-absorbing front and rear section with a strong, rigid occupant cell to provide protection in the event of an accident. It features high tensile steel reinforcing bars in doors and energy-absorbing material in the side pillars and roof rails. The body structure is based on a one-piece shell with high levels of bending and torsional rigidity, which provides a steel cage for the safety of both the driver and passengers.[3]