Except there are guys walking in freight yards all the time. From the mainline crews who pull the trains in, to the yard conductors who build the trains and the car department that pre-trips the them. Those who have only even been observers may not mind them, but as someone who used to actually work in places like that I greatly disliked them due to how sore my feet used to get walking on the ballast and stepping over weeds all day long feeling like I was in a scene from the Walking Dead, which is why it was such a nice reprieve to finally work in a properly maintained and well kept yard instead.
Exactly. Plus not having to worry about tripping over weeds and having much of the yard paved as opposed to having little or none is a real foot saver!
To follow up further on this, why don't I just show you:
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Now THAT'S what I call a proper train yard(s).