Now in your second picture ragga you see how the 'DOC' registered buses were converted for one man operation almost at the end of their lives - the old BCT style destinations, an inverted 'T' display changed by the conductor upstairs, had to be altered so the driver could operate them from his cab - the lower 'one line' display spoiled the design of these buses, I think. Note also the yellow 'Pay as you enter' plate on the front, in use on one man buses until all the conductors had gone.