Question: I’ve been noticing the term “control points” (CPs) being used in train-watching videos and in your magazine. The article on John Schindler’s amazing St. Louis Junction [March 2020] mentions CPs including West Madison, Gratiot, and Chicago Throat. Canadian Pacific’s Paynesville Sub has CP 115 and CP 70. This tells me CPs can be designated […]
Ask MR: What’s a control point?
