More detail can be seen in this view of a road-going wagon. If only we had a date for this shot. It may be possible to work it out, within reasonable limits. The wheels appear to be (perhaps) rubber-tyred wooden wagon-wheels, with a manually settable brake, operable by means of a metal control-wheel seen at ‘two-o’clock’ of the front (nearest the camera) wheel. The basics of this wagon are presumably entirely conventional and not much changed for centuries, apart (perhaps) from the fact that this wagon may have been exactly-sized to be able to be readily-accommodated on a flat-truck railway wagon so as to roll-on and roll-off and (presumably also) to be readily and quickly locked-in-place on the railway wagon. This particular wagon differs in many details from those seen in the preceding view of (5) wagons in line on a single train of railway trucks, so perhaps this particular wagon is road-only.(16.8.16).