Hello; Very nice video, with the explanations below I find it really great. Swedish power on video with 2 monsters of power that are the Volvo FH16 750 and the Scania R770, having worked at Volvo Trucks I remain a lover of the brand. The length of a chassis determines which container length it can accept. The standard ISO containers are either 20-, 40-, or 45-foot-long. For example, a 40-foot-long chassis is used for a 40-foot-long container. While some chassis are fixed length, others can be extended or shortened depending on which container needs to be hauled. The most common adjustable chassis lengths are 40/45. In some countries there are other lengths of containers used domestically. For example, in North America there are 53-foot-long containers and 53-foot-long chassis.