Regulators say older merger rules apply to Kansas City Southern Board Member Primus dissents 0 448 3 minutes read The Surface Transportation Board allows Kansas City Southern to maintain its waiver to post-2001 merger rules. (Photo: Jim Allen/FrieghtWaves) In a late Friday decision, STB confirmed that Kansas City Southern (KCS) is exempt from following the newer merger rules made after 2001. By allowing KCS to maintain its waiver from the post-2001 rules, a proposed merger between KCS and CP could occur under pre-2001 rules. Under the post-2001 rules, the board would be studying the...