A westbound BNSF freight train rounds the Tehachapi Loop in Southern California. Howard Ande The product of the Sept. 22, 1995 merger of the parent companies of the Atchison, Topeka & Santa Fe Railway and the Burlington Northern Railroad, BNSF is one of the west’s two giant railroad systems. Its 32,000-mile network (24,000 owned route […]
Modern railroad dispatching systems and movement controls have evolved by trial and error into a two-tier system of centralized dispatching and trackside signaling. But while the physical means of controlling traffic converged on a few types of lineside signal equipment – semaphores, position-lights, searchlights, etc. – the colors and arrangements (“aspects”) they presented, and the […]
