These applied synchronizers to match gear speeds, allowing for smoother shifts and less difficult driving. The mid-twentieth century noticed the introduction of automated transmissions.  A guide transmission calls for the motive force to manually choose the gears[six] by functioning a equipment adhere and clutch (which is generally a foot pedal https://beaujtwzz.tokka-blog.com/34405603/a-secret-weapon-for-automobile-gearbox