There are 16 different models of buses, from Brazil, Germany and China, posing a challenge to engineers. The waiting time for parts, three to six months, especially from China, he said, is too long. The 50 buses which were down for a considerable period were repaired in record time to circumvent any suffering of commuters due to the strike. Maharaj said this demonstrated how efficient the PTSC could be if given the tools to work with. Now that the engineers have demonstrated this ability, Maharaj said, the intention is to have 100 other buses that are down, up and running in the shortest possible time to bring the fleet of 400 buses on the road.