(29 Apr 2018, 5:44 pm)S830OFT wrote Apparently they are different in engines or something. Is that why 5438 and 5439 came before?
They were going to have different engines, but that decision was reversed and they have the same Cummins engine as all the previous ones. Streetlites from 5442 upwards have Euro 6 Daimler engines, which are a better match for the transmission.