ABFZ
| Arkansas Best Freight | 25 |
AMHZ
| American Highway Inc | 1 |
ARNZ
| ARNZ | 1 |
BDR
| BDR | 1 |
CEPZ
| CEPZ | 2 |
CMCZ
| Crowley Maritime Corporation | 1 |
DEBZ
| DEBZ | 3 |
DRTZ
| Dart Intermodal Incorporated | 13 |
EGLZ
| EGLZ | 2 |
EZZ
| EZZ | 4 |
IDCZ
| Interstate Distributor Co | 26 |
JBHZ
| J. B. Hunt Transport Incorporated | 29 |
MAR
| Martrac | 39 |
MECZ
| MECZ | 4 |
MVTZ
| MVTZ | 2 |
NFIZ
| NFIZ | 3 |
OVNZ
| Overnite Transportation Company | 12 |
PAMZ
| PAMZ | 9 |
PKGZ
| TIP Intermodal Services | 79 |
QMTZ
| QMTZ | 48 |
RDWZ
| Roadway Express Incorporated | 27 |
SAVZ
| SAVZ | 1 |
SNLZ
| Schneider National | 89 |
SUVH
| SUVH | 1 |
SWFZ
| Swift Transportation | 53 |
TDIZ
| Thoroughbred Direct | 243 |
TMHZ
| TMHZ | 1 |
TTLQ
| TTLQ | 1 |
USXZ
| US Express Enterprises | 185 |
VIPZ
| Vermont Railway | 36 |
WARZ
| White Arrow | 9 |
WERZ
| Werner Enterprises Incorporated | 45 |
WNCR
| WNCR | 2 |
YFSZ
| Yellow Freight Services Incorporated | 33 |