Assertion: semitrailer | /r/AtLocation | tractor
Facets:
Source sentences:
text: A further advantage of these exchange units consists in that in the loading and unloading of trailers and semitrailers, such trailers or semitrailers can be placed upon running axles or supports, and the drive axles, to be utilized otherwise during the loading and unloading period, are detached from the vehicle concerned and are employed, in the manner of dolly axles, attached to a tractor, as drive axles in other trailers or semitrailer to be transported.