Ka whakamahia e te pūnaha tirotiro waka pāhihi BGV3000 te hangarau whakaahua matawai irahiko, ka taea te tirotiro irahiko me te whakaahua i ngā waka pāhihi i runga ipurangi i te wā tūturu. Ko te nuinga o te pūnaha he pūnaha pūtake hihi, he pūnaha kite, he hanganga gantry me te taputapu tiaki irahiko, he pūnaha kawe waka, he pūnaha tohatoha hiko me te whakahaere, he pūnaha aroturuki haumaru, he pūnaha tirotiro whakaahua waka me te pūmanawa. Ka tāutahia te pūtake hihi ki runga o te hongere tirotiro, ā, ka tāutahia te kite ki raro o te hongere tirotiro. I te wā e whakahaerehia ana te tirotiro, ka mau te pūnaha tirotiro, ka haria te waka tirotiro mā te hongere tirotiro i te tere pumau mā te taputapu kawe, ka whiti te pūtake hihi mai i runga o te waka tirotiro, ka whiwhi tohu te rarangi kite, kātahi ka whakaatuhia he whakaahua matawai ki runga i te tūāpapa tirotiro whakaahua i te wā tūturu.
