What does DOT 105J500W rail car mean?

Question

Breakdown the term "105J500W". The first three digits refer to DOT105 class rail cars. (HazMats?) What do the letters mean? What other alternatives are there? What sizes do they come in? What does the 500 mean? What vehicles can transport chlorine? What reference should I be looking in for this information? I'm looking at 49 CFR 173.314 footnote 6

Answer 1

If Railroad wanted you to know they would tell you, Some things best to not know, for SAFETY

Answer 2

RUUUUUUUUUUUUUUUUN !

Right on ridgerunner.  Someone would have to nuts to give this out.  

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