John wrote in
2.236:

JohnW wrote in
:

I think what you are referring to is a scanner which was used to
identify where buses were. They read a device on the side of the bus
near the front and roughly at the height of the long advert down the
side.

John


Pretty advanced for its time!


Thanks - I found this: http://archive.commercialmotor.com/article/27th-
december-1957/24/buses-tracked-by-new-electronic-system