| TM | Tank Car equipped with container of ARA or AAR Specification I, II, III, III Experimental Welded Seams, IV, 203, 203-W, 203-X or ICC specification 103, 104-W or Specification Emergency USG-A, USG-B or USC-G. |
|---|---|
| TA | Tank Car equipped with container of ICC Specification 103-A, 103-AW, 103-C and 103-CW. Also, ARA II, ARA III or ICC-103 if containers were originally designed or subsequently reconstructed to comply with the requirements of ICC-103-A cars. |
| TL | Tank car equipped with container lined with any material other than glass. |
| TG | Tank car equipped with one or more glass lined containers. |
| TMU | Tank car equipped with containers of ARA specification VI, B.E. Spec. 27, ICC spec. 27,106A500, 106A800, or 107A**** series. |
| TP | Tank car equipped with container of ARA spec. IV*, IV-A, V or ICC spec. 104*, 104-A,104-AW,105, 105A300, 105A300-W, 105A400, 105A500-W, 105A600 or 105A600-W. Also lagged and jacketed. Transportation of gasoline, etc. |
| TR | Tank car equipped with a container of ARA or AAR spec. 201-A-35-X or ICC spec. 103-AL and 103-C-AL. Containers made of aluminum. |
| TW | Tank Car equipped with one or more wooden containers. |