Ingaphambili lithola amandla okuthonya, asakazwa ubhampa wangaphambili kumabhokisi okumunca amandla nhlangothi zombili bese idluliselwa kumzila wesitimela wangaphambili kwesokunxele nakwesokudla, bese kuya kuso sonke isakhiwo somzimba.
Ingemuva lithintwa amandla okuthinta, futhi amandla okuthinta adluliswa ubhampa ongemuva ebhokisini lokumunca amandla nhlangothi zombili, kuya kwesokunxele nakwesokudla ngemuva ujantshi, bese kuya kwezinye izakhiwo zomzimba.
Obhampa abanamandla aphansi bangakwazi ukubhekana nomthelela, kuyilapho amabhampa anomthelela wamandla aphezulu edlala indima yokudlulisa amandla, ukuhlakazeka kanye nokubhafa, futhi ekugcineni adlulisele kwezinye izakhiwo zomzimba, bese ethembela emandleni esakhiwo somzimba ukumelana. .
I-America ayibheki ibhampa njengokucushwa kokuphepha: I-IIHS eMelika ayibheki ibhampa njengokucushwa kokuphepha, kodwa njengesisekeli sokunciphisa ukulahlekelwa ukushayisana kwesivinini esiphansi. Ngakho-ke, ukuhlolwa kwebhampa kusekelwe futhi emcabangweni wokuthi unganciphisa kanjani ukulahlekelwa kanye nezindleko zokuyilungisa. Kunezinhlobo ezine zokuhlolwa kokuphahlazeka kwebhampa ye-IIHS, okuwukuhlolwa kokuphahlazeka kwangaphambili nangemuva (isivinini esingu-10km/h) nokuhlolwa kokuphahlazeka kwezinhlangothi zangaphambili nangemuva (isivinini esingu-5km/h).
