The Honda Insight Supplemental Restraint System consists of an SRS control unit with integral impact sensors, driver and passenger airbags, and seat belt tensioners. The seat belt pretensioner system also provides a load limiting function, where the seatbelts are released slightly when needed to limit the amount of force exerted on a passengers by the seatbelts during a collision. The driver's air bag is designed for the lightweight compact type steering wheel (similar to the S2000).