Hello, I come from the warehouse / shipping corner and have a topic that I would like to address to you experts. In the future we will have more shunting activities of 40 feet sea container on semi-trailers. Now we need a tractor for this ranking. My question: Are the specifications (saddle plate, king pin, electricity, compressed air) the same for all tractors, respectively semi-trailers. Or else can I ask: Can I use EVERY tractor machine? e, EVERY semi-trailer move? Sorry if this is perhaps a diletan question, but I don’t know about this topic at all! I would be happy about numerous answers!