Menard's freight building on the inside back cover of OGRR Run 311 appears to be a good candidate for a smart I.R. detector based animation project like the passenger terminal.
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A smart I.R. detector measures the distance to the reflecting object and outputs a signal proportional to the distance. This function can be used to set up a predetermined sequence of actions as a train enters the accessory area, such as turning on yard lights, moving forklifts, etc.
