I-HHC (Hill Hold Control)
Yasungulwa ngumenzi wezimoto waseMelika uStebebaker, owaqala ukuyisebenzisa ezimotweni zabo ngo-1936.
Uhlelo lwamanje lusebenza ngokwesisekelo solwazi oluvela ezinzwa ezilandelela ukuthambeka kwemoto. Uma uhlelo luthola ukuthi imoto isentabeni futhi umshayeli acindezele i-clutch bese ebopha amabhuleki bese efaka igiya lokuqala, izolaya uhlelo lwamabhuleki ukuthi luqinisekise ukuthi imoto ayikhishwa lapho iphuliwe ibhuleki. ... Ngakho-ke, imoto ayihlehli emuva, kepha ilinda ukuthi idedelwe i-clutch. Eqinisweni, lesi yisimiso esiyisisekelo, kepha umkhiqizi ngamunye wezimoto angalungiselela lolu hlelo ngendlela yalo, ngokwesibonelo: ukuthi ngemuva kokukhipha ingcindezi esakhiweni sebhuleki, amabhuleki azohlala, ngokwesibonelo, enye imizuzwana engu-1,5 noma emibili, futhi bese udedela ngokuphelele.
