A semi-automatic transmission is wherever many of the operation is automated (often the actuation on the clutch), but the driver's enter is needed to maneuver off from the standstill or to change gears. A constantly variable transmission (CVT) can modify seamlessly by way of a continuous selection of gear ratios. https://automobile-gearbox63849.blogunteer.com/33128299/automobile-gearbox-things-to-know-before-you-buy