Ki te kore te whakawhitiwhiti kōrero o te tūmahi nei e whakamārama i ngā rorohiko pūmau mō ngā karuke huarahi, hei hoa whakahaere waka motuhake nui, e tiaki ana matou i te haumaru me ngā rorohiko pūmau matua. Ko ngā taunaki tūmatanui e āhei ana ki ngā rorohiko hāwhe huarahi me te anti-lock braking system (ABS) ā, me te rorohiko electronic stability control (ESC), ka whakatūtono i te paoro karu ki te whakamutu i te kaiwhakarite karu i runga i ngā tohu urupare. Ko te rorohiko hāwhe karu karuke 24-inihi i te whatitiri (i whakatakoto ai i runga i te pūngao semi-metallic friction) e taea ana te whakaputa i te 18,000 N·m o te momo pūmau karu karuke mō ia ake rā. Ko te whakahaere pūmau karuke o te wae whakatō i roto i tētahi proportional control valve, e whakangungu ana ki te whakarauora i waenganui i te karuke me te wae whakatō kia kaua e kitea ai te whakapae karu. Mō ngā tūnga herehere nui (GCW > 60 ton), ko ngā rorohiko karuke herehere ā-pūmotu (e āhei ana ki te whakaputa i te 2,500 N·m o te momo whakamuri) me ngā rorohiko hydraulic retarders ā-rohe e whakaiti ana i te whakamuri karu i runga i ngā ara tahanga roa. Ka whakaaetia te katoa o ngā rorohiko pūmau ki ngā ture ECE R13/09, ka whakahaere dyno testing kia tino whaihua te mahi mō ngā raupapa wea (-40°C ki +80°C). Ko ngā pūkai hāwhe kore-tirohanga me ngā tūmomo whakatika kore-tirohanga e whakaiti ana i te waewae noho, me ngā pūngao karu e āhei ana ki te whakahaere mō 200,000 km i raro i te mahi tika. Tuku tonu ki tā matou rōpū take haumaru mō ngā tūtohi pūmau matua, ā, me ngā tārai whakarukuruku i runga i ngā kaiwhakaako ā-kaupapa me ngā tūtohi ture moeoneone.