| Company | City | State | Country |
| Oakley Transport, Inc. | Lake Wales | FL | USA |
| P.J. Murphy Transportation, Inc. | Methuen | MA | USA |
| P.S. Marston Associates | North Hampton | NH | USA |
| PAR Trucking, Inc. | Lombard | IL | USA |
| Paul's Hauling Ltd. | Winnipeg | MB | CANADA |
| Penn Tank Lines | Chester Springs | PA | USA |
| Performance Trans., Inc. | Fitchburg | MA | USA |
| Petroleum Transport Company, Inc. | Mount Airy | NC | USA |
| PetroTaino Transport, Inc. | Spring Branch | TX | USA |
| Premier Bulk Systems | Stouffville | ONT | CANADA |
| Propane Transport International | Houston | TX | USA |
| Quality Transport, Inc. | Fremont | CA | USA |
| Quandt Transport Service | Omaha | NE | USA |
| Quick-Way, Inc. | Ludington | MI | USA |
| RBS Bulk Systems, Inc. | Calgary | AB | CANADA |
| R. O. Harrell, Inc. | South Boston | VA | USA |
| RS Used Oil Services, Inc. | Monee | IL | USA |
| Rands Transport, Inc. | Linthicum | MD | USA |
| Regional Enterprises Inc. | Hopewell | VA | USA |
| Reliable Liquid Transport, Inc. | Santa Rosa | CA | USA |
| Reliable Transfer Corp. | Juneau | AK | USA |
| Roeder Cartage Co., Inc. | Lima | OH | USA |
| Roy Bros Inc. | Billerica | MA | USA |
| Roy's Transfer Inc. | Rochelle | IL | USA |
| Royal Tank Lines | Barrie | ON | CANADA |
| RST Industries | Saint John | NB | CANADA |
| Ruan Transportation Management Systems | Des Moines | IA | USA |
| S L Dudley Transportation | Barre | VT | USA |
| Samuel Coraluzzo Co., Inc. | Vineland | NJ | USA |
| Schiber Truck Company, Inc. | Hartford | IL | USA |
| Schneider National Bulk | Green Bay | WI | USA |
| Service Transport Company | Houston | TX | USA |
| Shipley Transport | Sykesville | MD | USA |
| Sinclair Cartage, Inc. | Hinsdale | IL | USA |
| SJ Transportation Co., Inc. | Woodstown | NJ | USA |
| Slay Transportation Co., Inc. | St. Louis | MO | USA |
| Solar Transport Inc. | West Des Moines | IA | USA |
| Southern Tank Transport | Charleston | SC | USA |
| Specialized Transport, Inc. | Waverly | IL | USA |
| Stahly Cartage Co. | Edwardsville | IL | USA |
| Sterling Oil & Chemical Co., Inc. | Southfield | MI | USA |
| Stony Run Enterprises Inc. | Hamilton | OH | USA |
| Sully Transport Inc. | Sully | IA | USA |
| Superior Bulk Logistics, Inc. | Hinsdale | IL | USA |
| Superior Transport | Fort Worth | TX | USA |
| Switzer Tank Lines, Inc. | Mt. Summit | IN | USA |
| T & M Transportation, Inc. | Kansas City | KS | USA |
| Tandet Logistics, Inc. | Oakville | ON | CANADA |
| Tank Carrier Services, Inc. | Mississauga | ON | CANADA |
| Tank Truck Transport Inc. | Kleinburg | ON | CANADA |
| Tankstar USA, Inc. | Milwaukee | WI | USA |
| Terpening Trucking | Syracuse | NY | USA |
| Tidewater Transit Co. Inc. | Kinston | NC | USA |
| Tom Hassel Transport Inc. | Manasquan | NJ | USA |
| Trans Distribution Incorporated | Brookfield | IL | USA |
| Transgas, Inc. | Lowell | MA | USA |
| Transport Inc. | Moorhead | MN | USA |
| Transport Service Company | Oak Brook | IL | USA |
| Transwood Inc. | Omaha | NE | USA |
| Trimac Logistics | Calgary | AB | CANADA |
| Trimac Transportation Inc. | Calgary | AB | CANADA |
| Triple G Enterprises, Inc. | Lockport | IL | USA |
| Truck Transport, Inc. | Fenton | MO | USA |
| United Petroleum Transports, Inc. | Oklahoma City | OK | USA |
| Usher Transport, Inc. | Paducah | KY | USA |
| Venezia Transport Service, Inc. | Limerick | PA | USA |
| Wallis Oil Company | Cuba | MO | USA |
| Weaver Brothers, Inc. | Anchorage | AK | USA |
| Wischmeier Trucking Inc. | Seymour | IN | USA |
| Wonder Transport Company | Aliquippa | PA | USA |
| Wynstar, Inc. | Portage | IN | USA |
| Wynne Transport Service Inc. | Omaha | NE | USA |
