The why to the added siding=added train question might well be that BNSF is very careful these days in adding traffic until they are sure that they can handle it(as we have seen another western railroad can NOT handle it.){despite their slogan??}. They go so far as to computer model the demands placed on track room with the added traffic. That research probably indicated that to make schedule, keep the railroad fluid, that this new siding was neded. Andy