Nws muaj cov haujlwm ntawm kev hloov pauv hloov ceev ceev, tsis siv neeg siv, kev tswj hwm kev sib hloov, kev siv kub, tso tseg nres, yoog raws qhov pib thiab rov ua dua tshiab braking, raws li lub sij hawm-ncua pib thiab nres, Timer tswb, thiab lwm yam, lub qhov rooj kev nyab xeeb kom ua tiav cov kev ua haujlwm yooj yim thiab txhim khu kev qha cov txiaj ntsig yooj yim. Lub tshuab yog ntsia rau hauv ib qho kev ua haujlwm tseem ceeb kom paub cov kev ua haujlwm yooj yim thiab txhim khu kev qha sib khi. Nws yog cov khoom lag luam zoo los hloov cov khoom lag luam txawv teb, cov haujlwm tsis zoo, kev tiv thaiv hluav taws xob, kev tiv thaiv ib puag ncig thiab zoo nkauj.