.......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... ALBUQUERQUE, N.M. — Federal regulators have certified that the New Mexico Rail Runner Express has met a year-end deadline to install a federally required safety system on the state-owned passenger service. The Positive Train Control System is designed to prevent train collisions, high-speed derailments and incursions into track work zones. The passenger service’s operator, the Rio Metro Regiona...