 Given that they were originally designed for shunting and hauler work, these locomotives have performed extremely well in multiple roles.Shortly after entering service they were used to haul the "Witblitz" shipping container express train all the way between Johannesburg and Cape Town.This saved time by avoiding the need to change locomotives at Beaufort West and Kimberley to negotiate the section between these two centres, since it could be traversed in diesel-only mode even though the units are less powerful in that mode.