A automobile gearbox transmits energy with gears. These gears are engaged and disengaged by gearbox-specific shifting mechanisms. A manual transmission needs the driver to manually select the gears[six] by functioning a gear adhere and clutch (which is usually a foot pedal for cars or possibly a hand lever for bikes). https://gunnerahjik.ltfblog.com/33088809/automobile-gearbox-fundamentals-explained