The attached images . . . taken from The Automobile, Dec 24 1914, pp1166-67 . . . provide standards for ambulances developed by the British Red Cross Society. Note that the first image is for two stretchers, the second for four. The article doesn't say if the designs were accepted. Can anyone verify if they were or not?
These drawings certainly look like the structures used on a number of adapted or presentation vehicles which appeared in photographs during the first months of the war.