Visual differences between Dot 111 and DOT 105 classifications is a free online Railroad Discussion Forum and Railroad Photo Gallery for railroaders, railfans, model railroaders and anyone else who is interested in railroads. We cover a wide variety of topics, including freight trains, passenger and commuter railroads, rail news and information, tourist railroads, railway museums and railroad history.


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Hi! I was wondering if anyone knows of any distinct differences between DOT 111, 117 and DOT 105, 112 tank cars that are consistent among manufactures. Specifically, anything on the outside that could help me tell the difference by looking at them.

Another question I have is what are the main differences between AAR and DOT classifications?

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