Modern vehicles use helical gears and synchromesh devices within the gearboxes, that synchronize the rotation of gears which might be about to mesh. This eliminates clashing on the gears and makes gear shifting much easier. Good write-up! The detailed breakdown of the differing types of gearboxes as well as https://gearbox74195.ampblogs.com/the-basic-principles-of-gearbox-70493697