The “A-train” structure is a modular concept that enables lead times to be reduced and makes refurbishment easier with better residual value.
Moreover, it is superior in terms of recyclability because it is made of aluminum and is a “module-to-mounting” rail structure.
The use of FSW to replace fusion welding technology is one of the recommendations of the Uff/Cullen Report on the Ladbroke Grove Inquiry, and this technology is attracting considerable attention all over the world.