Mae  Gwasanaeth Ambiwlansys Cymru yn aml yn anfon sawl cerbyd mewn ymdrech i gyrraedd y targed wyth munud – er enghraifft yn ardal Caerdydd a Bro Morgannwg ar gyfartaledd bydd dau gerbyd yn cael eu hanfon allan i ateb pob galwad. Drwy anfon cerbyd ymateb cyflym yn gyflymach i’r mwyafrif o alwadau 999 gall y gwasanaeth ambiwlans stopio’r ‘cloc’ a chyrraedd y targed. Ond os oes angen i’r claf fynd i’r ysbyty mae’n rhaid  wedyn aros am ambiwlans brys mwy o faint i’w gludo yno.
The Welsh Ambulance Service regularly dispatches multiple vehicles to try and achieve the 8-minute target – in the Cardiff and Vale of Glamorgan area, for example, an average of 2 vehicles are dispatched to every call. Sending a faster rapid response car to the majority of 999 calls means the ambulance service can stop the clock and achieve the target but if a patient needs to go to hospital they must then wait for a larger emergency ambulance vehicle capable of transporting them.