AXXZ
| Agricultural Express of America | 1 |
BNZ
| Burlington Northern and Santa Fe Railway | 2 |
BOZ
| Baltimore & Ohio | 2 |
CBQZ
| Chicago, Burlington & Quincy | 2 |
CMCZ
| Crowley Maritime Corporation | 2 |
CNWZ
| Chicago & Northwestern | 1 |
DCIZ
| Dana Railcare | 1 |
ICEZ
| GATX Capital Corporation | 1 |
LNZZ
| Louisville & Nashville | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MPZ
| Missouri Pacific | 5 |
NWZ
| Norfolk & Western | 1 |
OWZ
| OWZ | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 15 |
RDWZ
| Roadway Express Incorporated | 5 |
REDZ
| REDON Incorporated | 1 |
SFRZ
| SFRZ | 1 |
SFTZ
| Santa Fe | 7 |
SNLU
| Schneider National | 12 |
SNLZ
| Schneider National | 8 |
SOUZ
| Norfolk Southern Railway Company | 1 |
SPLZ
| Southern Pacific | 3 |
SWTZ
| St. Louis Southwestern Railway Company | 1 |
TSXC
| TSXC | 1 |
UPNZ
| Union Pacific Railroad Company | 1 |
UPSZ
| United Parcel Service | 7 |
UPZ
| Union Pacific Railroad Company | 2 |
USAZ
| XTRA Intermodal | 1 |
VTRZ
| Vermont Railway Incorporated | 3 |
WERZ
| Werner Enterprises Incorporated | 4 |
WTLZ
| WTL Rail Corporation | 2 |
XTRZ
| XTRA Intermodal | 4 |