| Keller Bus Service | 32700 | 104 | 70 | Interstate |
| Carruth & Son INC | 980770 | 31 | 14 | Interstate |
| District Moving Companies INC | 985878 | 24 | 12 | Interstate |
| Worldwide Moving Systems | 230034 | 20 | 21 | Interstate |
| Chutes International | 526104 | 20 | 35 | Interstate |
| Southern Marylnad Heating & Air INC | 1348080 | 20 | 70 | Interstate |
| Bozick Distributors INC | 564063 | 19 | 18 | Intrastate |
| Cable And Conduit Construction INC | 434594 | 18 | 5 | Intrastate |
| Ultra Towing & Transport | 679479 | 18 | 11 | Interstate |
| Automatic Rain Lawn Sprinklers | 1039543 | 18 | 23 | Interstate |
| James H Stone Jr LLC | 1518866 | 18 | 15 | Intrastate |
| Jimmy Richards And Sons Excavating INC | 469080 | 16 | 8 | IntrastateHazmat |
| Clinton Fence CO INC | 379744 | 15 | 13 | Interstate |
| Elbert's Enterprises LLC | 761076 | 15 | 15 | Interstate |
| Wintergreen Landscape Mntnc | 1286693 | 13 | 11 | IntrastateHazmat |
| Nobel Courier LLC | 3574651 | 12 | 15 | Interstate |
| Byanymeanstruckingllc | 4048592 | 11 | 1 | Interstate |
| Superior Tank INC | 514403 | 10 | 5 | Interstate |
| Atlantic Hardware Supply LLC | 2274851 | 10 | 10 | Interstate |
| Cedric's Trucking Service Corporation | 609137 | 9 | 9 | Interstate |
| Mandley Excavating CO | 1089201 | 9 | 10 | Intrastate |
| District Contractors INC | 1094820 | 9 | 4 | Interstate |
| Mk&r Site Works | 1522617 | 9 | 9 | Intrastate |
| Ad4 Towing & Recovery LLC | 3670485 | 9 | 7 | InterstateHazmat |
| Beltway Paving CO INC | 582931 | 8 | 8 | InterstateHazmat |
| Fantasy World INC | 777516 | 8 | 16 | Interstate |
| Wooster Drilling CO | 1067097 | 8 | 4 | Intrastate |
| True Time Transportation Services LLC | 3754453 | 8 | 7 | Interstate |
| Anytime Towing INC | 622559 | 7 | 6 | InterstateHazmat |
| Southern Tree Service INC | 706974 | 7 | 6 | Intrastate |
| Water Services INC | 1055129 | 7 | 7 | Interstate |
| Automotive Talk Towing & Recovery | 2500941 | 7 | 5 | IntrastateHazmat |
| Crescent Ridge Adult Day Health Center | 2634452 | 7 | 9 | Interstate |
| Southern Maryland Gas Company, Inc. | 6116386 | 7 | 4 | IntrastateHazmat |
| Myers Auto Service | 420169 | 6 | 4 | InterstateHazmat |
| Center Distributors INC | 1089241 | 6 | 7 | Interstate |
| Mckendree Moving & Storage INC | 1309579 | 6 | 4 | Interstate |
| A Plus Paving & Concrete | 1474902 | 6 | 3 | Intrastate |
| Earnshaw Bros LLC | 1606982 | 6 | 4 | Intrastate |
| Lsl Lawn Service | 1611042 | 6 | 5 | Intrastate |
| Sjb Packing And Moving INC | 1669040 | 6 | 5 | Interstate |
| Southern Maryland Gas CO INC | 1705927 | 6 | 5 | IntrastateHazmat |
| E S Concrete INC | 2267998 | 6 | 3 | Intrastate |
| Gbw Trucking LLC | 3024346 | 6 | 3 | Intrastate |
| G & Z LLC | 4302281 | 6 | 6 | Interstate |
| B & B Site Services LLC | 4341325 | 6 | 6 | Intrastate |
| Twp Motorsports, Inc. | 9855298 | 6 | 2 | InterstateHazmat |
| Middleton Manor Farms INC | 618104 | 5 | 3 | Interstate |
| Tri State Contractors INC | 695597 | 5 | 4 | Interstate |
| Rainbow Construction Corp Of Waldorf | 873815 | 5 | 9 | Intrastate |
| D & R Backhoe Service INC | 1049172 | 5 | 7 | Intrastate |
| Bowie Trash Service | 1050017 | 5 | 6 | Intrastate |
| Potter Heating & Electric INC | 1106260 | 5 | 5 | Intrastate |
| Middleton Backhoe Service LLC | 1127201 | 5 | 5 | Intrastate |
| B&b Site Management INC | 1299188 | 5 | 4 | Intrastate |
| Carsco INC | 1413146 | 5 | 5 | Interstate |
| Beltway Paving Of Southern Maryland | 2317539 | 5 | 4 | InterstateHazmat |
| Cates LLC | 3287864 | 5 | 5 | Interstate |
| Naomi Trucking | 3480944 | 5 | 5 | Interstate |
| H & A Towing And Recovery LLC | 4001836 | 5 | 3 | InterstateHazmat |
| Longwood Gardens INC | 326387 | 4 | 4 | Intrastate |
| Quality Firewood And Logging INC | 1036390 | 4 | 5 | Interstate |
| Starr INC | 1270462 | 4 | 1 | Interstate |
| Southern Maryland Lawn & Landscaping INC | 1351188 | 4 | 3 | Intrastate |
| Big Ben's Towing & Recovery | 1400761 | 4 | 4 | IntrastateHazmat |
| Genevie Plumbing INC | 1419894 | 4 | 4 | IntrastateHazmat |
| Clinton Richards Trash Service INC | 2298729 | 4 | 3 | Intrastate |
| Lenco Construction Company INC | 2303384 | 4 | 1 | Intrastate |
| 18 Wheels Rollin Truck Transport LLC | 2406719 | 4 | 5 | Interstate |
| J&r Recycling | 2488921 | 4 | 2 | Interstate |
| Ac LLC | 2628027 | 4 | 4 | Intrastate |
| Riverside Towing LLC | 2948718 | 4 | 2 | IntrastateHazmat |
| S & F Recyling LLC | 3039096 | 4 | 4 | Interstate |
| Beltway Striping And Traffic Control INC | 3423092 | 4 | 4 | InterstateHazmat |
| C B Landscaping Services LLC | 3448023 | 4 | 1 | Intrastate |
| Buslink LLC | 4054041 | 4 | 3 | Interstate |
| Bigjw Transporter LLC | 4123884 | 4 | 5 | InterstateHazmat |
| B & B Contractors LLC | 4501892 | 4 | 3 | Intrastate |
| Think Greater LLC | 7311548 | 4 | 4 | Interstate |
| Kia Of Waldorf | 716852 | 3 | 2 | Interstate |
| Johns Towing And Recovery INC | 1147841 | 3 | 3 | IntrastateHazmat |
| Covenant Builders Landscape & Design INC | 1176119 | 3 | 1 | Intrastate |
| Villeda Contractors INC | 1412066 | 3 | 2 | Intrastate |
| N & D Trucking | 1436537 | 3 | 4 | Interstate |
| Boswells Auto | 1613153 | 3 | 3 | Intrastate |
| T And T Towing Corporation | 1753930 | 3 | 3 | InterstateHazmat |
| Newburg Trash | 1873300 | 3 | 2 | Intrastate |
| Reyco Electrical Services INC | 2010860 | 3 | 1 | Interstate |
| Panel Man Office Solutions LLC | 2319469 | 3 | 4 | Interstate |
| Cah Transportation Services LLC | 2523045 | 3 | 3 | Interstate |
| Marcus D Trucking LLC | 2539256 | 3 | 3 | Interstate |
| Ok Bowles Enterprises LLC | 2576810 | 3 | 1 | Interstate |
| C And H Towing | 2578668 | 3 | 1 | IntrastateHazmat |
| Pjs Landscaping Services | 2902757 | 3 | 2 | Interstate |
| Pr Enterprise | 2935891 | 3 | 2 | Interstate |
| Boswells Towing INC | 3073146 | 3 | 2 | IntrastateHazmat |
| J R Landscaping & Concrete Services LLC | 3194521 | 3 | 1 | Intrastate |
| Couples Limousines | 3343348 | 3 | 4 | Interstate |
| Daryden Trucking Company LLC | 3377308 | 3 | 3 | Interstate |
| Roeslan Construction Services INC | 3445913 | 3 | 2 | Intrastate |