These utilized synchronizers to match gear speeds, allowing for smoother shifts and less complicated driving. The mid-20th century observed the introduction of automatic transmissions.  Contohnya ketika menuruni bukit Cameron Highland atau Lebuh Raya Timur Barat (bukit Gerik) dengan equipment D, keadaan bukit yang curam membuatkan kereta macam nak terlajak ke depan, https://gearboxauto21974.blogacep.com/37715147/about-gearbox-auto