Older clutchless manual transmissions, which only automated the clutch system, used various different control systems to facilitate clutch operation, while still requiring the driver's input to manually change gear, were introduced by numerous production car manufacturers, starting from around the mid-1930s, up to around the early to mid-1990s. These systems would either fully eliminate the clutch pedal, or would retain the clutch pedal, but the clutch would only be required to be operated for performing standing starts from a stationary position, not for shifting gears.