Do you live anywhere near railroad tracks? I didn't until my adult life, but now it's not uncommon for me to hear a train whistle blowing multiple times a day. A train's whistle announces the approaching train to all who are within earshot. I can hear the whistle blowing in various parts of the city; however, it is only when I'm close to where tracks cross over the road that I experience the triple warning: the train whistle blowing the crossing bars coming down the crossing bells ringing with lights blinking The United States Railroad system has experienced enough tragedy from trains [...]