OK, since there has been more discussion about the QR code part of the test system, I'll skip ahead to that part of my story.

(Link to Part 3: http://model-railroad-hobbyist.com/node/29596)

Update: In the last post I said that I think the car usage cycle is like this:

1. Empty, available for assignment

2. Empty, but enroute for loading

Tired of this yet?  I hope not. I'd like to get this basic background stuff nailed down and then get into the part where "Then magic happens."

(Link to Part 2: http://model-railroad-hobbyist.com/node/29591)

(Link to Part 1: http://model-railroad-hobbyist.com/node/29580)

This post is the first in a series that I plan on doing which will describe some ideas that I've had and some methods that I've been working on over the past 20+ years having to do with model railroad freight car movements, also known as car forwarding.