ABFZ
| Arkansas Best Freight | 22 |
AMHZ
| American Highway Inc | 1 |
ARNZ
| ARNZ | 1 |
BDR
| BDR | 1 |
CEPZ
| CEPZ | 2 |
DEBZ
| DEBZ | 3 |
DRTZ
| Dart Intermodal Incorporated | 12 |
EGLZ
| EGLZ | 1 |
EZZ
| EZZ | 4 |
IDCZ
| Interstate Distributor Co | 21 |
JBHZ
| J. B. Hunt Transport Incorporated | 27 |
MAR
| Martrac | 40 |
MECZ
| MECZ | 4 |
MVTZ
| MVTZ | 1 |
NFIZ
| NFIZ | 3 |
OVNZ
| Overnite Transportation Company | 11 |
PAMZ
| PAMZ | 3 |
PKGZ
| TIP Intermodal Services | 71 |
QMTZ
| QMTZ | 49 |
RDWZ
| Roadway Express Incorporated | 26 |
SAVZ
| SAVZ | 1 |
SNLZ
| Schneider National | 16 |
SUVH
| SUVH | 1 |
SWFZ
| Swift Transportation | 50 |
TDIZ
| Thoroughbred Direct | 217 |
TMHZ
| TMHZ | 1 |
TTLQ
| TTLQ | 1 |
USXZ
| US Express Enterprises | 147 |
VIPZ
| Vermont Railway | 25 |
WARZ
| White Arrow | 12 |
WERZ
| Werner Enterprises Incorporated | 28 |
WNCR
| WNCR | 2 |
YFSZ
| Yellow Freight Services Incorporated | 31 |