Where cargo has to be handled package by package, railways suffer delays and long lines of wagons stand idle whilst awaiting loading and unloading. A system is therefore developed to speed up the ‘turn round’ of wagon. The system comprises of constructing vans in two separate parts-the whole of the container unit to be detachable from the chassis, and by standardization, to be readily usable on any other chassis. The van part is called a “lift van” and the chassis is called a “flat.”