CEMX
| Cemex Mexico SA de CV | 1 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 2 |
FBOX
| TTX Company | 3 |
GVSR
| Galveston Railroad L.P. | 2 |
HS
| H and S Railroad Company | 1 |
NS
| Norfolk Southern | 1 |
SP
| Southern Pacific | 2 |
SRLX
| Southern Rail Leasing Incorporated | 1 |
TBOX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 2 |
WP
| Western Pacific | 1 |