| R & H TRANSPORT LLCHalethorpe, MD | 4398228 | 1 |
| R & M INTERNATIONAL TRUCKING LLCDundalk, MD | 1541262 | 1 |
| R & R TRUCKING & TOWING INCOakland, MD | 240085 | 52 |
| R AND R TRUCKING SERVICES LLCElkridge, MD | 1567095 | 8 |
| R L EWING CONTRACTORS INCEaston, MD | 1015109 | 12 |
| R M TRANSPORTATION INCMontgomery Village, MD | 1300560 | 12 |
| R&L MANN TRANSPORT LLCHanover, MD | 1783866 | 2 |
| R&M COLEMAN TRUCKING LLCWesternport, MD | 4303762 | 2 |
| R&M SERVICES, LLCGlenn Dale, MD | 4159207 | 2 |
| R&R TRUCKING TRANSPORT LLCGlen Burnie, MD | 4408851 | 2 |
| RAM AUTOMOTIVE LLCOlney, MD | 1351207 | 4 |
| RAM TRUCKING GROUP LLCColumbia, MD | 3386623 | 16 |
| RANDHAWA TRANSPORTATION INCSilver Spring, MD | 3483346 | 1 |
| RAY LOGGING COMPANY INCNortheast, MD | 7622 | 4 |
| RAYOS AUTO SERVICES LLCFrederick, MD | 3063125 | 1 |
| RD FARMS & LIVESTOCK HAULING LLCWilliamsport, MD | 3242321 | 8 |
| RECALLSalisbury, MD | 4315662 | 2 |
| REDSEA LOGISTICS LLCTakoma Park, MD | 4326306 | 1 |
| REDTAIL GROUP LLCGambrills, MD | 2401759 | 1 |
| REEDBIRD TRUCKING & TRANSPORT LLCOdenton, MD | 3295093 | 5 |
| REESE & SON TRUCKING LLCLonaconing, MD | 4123469 | 1 |
| REGENCY LEASING, INC.Gaithersburg, MD | 9489178 | 1 |
| REGIS F MCKENZIE JRFrostburg, MD | 2256691 | 2 |
| REHOBOTH TRUCKING LLCPerry Hall, MD | 3591547 | 16 |
| REIDS LEGACY LOGISTICS LLCWaldorf, MD | 4542122 | 1 |
| REISBERG LLCWestminster, MD | 2331540 | 2 |
| RHEE BROS INCHanover, MD | 244931 | 39 |
| RICHARD ANDREW DUNNSalisbury, MD | 1736241 | 1 |
| RICHSHAR TRUCKING LLCBaltimore, MD | 3566908 | 2 |
| RICHWAY TRANSPORT INCHagerstown, MD | 2120126 | 10 |
| RIGHT WAY AUTO TRANSPORT INCElkton, MD | 355181 | 37 |
| RIGHT WING TRANSPORT LLCGlen Arm, MD | 2908468 | 2 |
| RIO GRANDE FOOD PRODUCT INCLaurel, MD | 476735 | 26 |
| RIOS LOGISTICS SERVICES LLCCapitol Heights, MD | 4400410 | 1 |
| RITCHIE TRUCKING & EXCAVATING INCFrostburg, MD | 827406 | 9 |
| RIZZO BUSINESS SOLUTIONS LLCBowie, MD | 3755059 | 3 |
| RKB TRUCKING LLCGreensboro, MD | 4334451 | 1 |
| RM & A SERVICES INCHyattsville, MD | 3292853 | 1 |
| RMZ TRUCKING LLCDundalk, MD | 3849905 | 3 |
| ROAD REAL TIME LLCDamascus, MD | 4126669 | 1 |
| ROAD SAFETY LLCGlen Burnie, MD | 1276433 | 24 |
| ROAD TRIPS EXCHANGE LLCGaithersburg, MD | 3847555 | 2 |
| ROADROVER LOGISTICS LLCSilver Spring, MD | 4175697 | 1 |
| ROBERT L LAWRENCE SR CONSTHagerstown, MD | 2107111 | 1 |
| ROBERT ZIMMERMANBrooklyn, MD | 3892103 | 1 |
| ROCKDALE TOWING LLCReisterstown, MD | 535652 | 28 |
| ROCKET TRANSPORT LLCRockville, MD | 4229579 | 1 |
| ROCKIN TRANSPORT INCPikesville, MD | 1172947 | 1 |
| ROCKSOLID GENERAL CONTRACTOR INCRockville, MD | 3496871 | 3 |
| RODNEY DESAR DE MORAESSilver Spring, MD | 2484191 | 1 |
| ROLAND TRANSFER LLCHagerstown, MD | 4042827 | 2 |
| ROM TRUCKING LLCManchester, MD | 3843093 | 8 |
| RON WAGNER AUTO TRANSPORT LLCAccident, MD | 539905 | 4 |
| RONALD W DURHAMPocomoke, MD | 480008 | 3 |
| ROOP TRUCKING LLCNew Windsor, MD | 3643172 | 1 |
| RORA TRUCKING LLCWaldorf, MD | 4040899 | 2 |
| RORO EXPRESS LLCGaithersburg, MD | 3442151 | 2 |
| ROYAL STAR LOGISTICS INCLinthicum Height, MD | 3266709 | 13 |
| RSC TRANSPORTATION LLCBaltimore, MD | 1504488 | 3 |
| RUIZ LANDSCAPING LLCRockville, MD | 3123414 | 1 |
| RUKERT TERMINALS CORPORATIONBaltimore, MD | 6922 | 38 |
| RUSTY BROTHERS TRANSPORT LLCGaithersburg, MD | 3562497 | 3 |
| RYAN HARRELLWestminster, MD | 2542255 | 2 |
| RYAN'S LANDSCAPING AND WASTE MANAGEMENT LLCWaldorf, MD | 3203964 | 2 |
| RYN TRUCKING LLCGlen Burnie, MD | 2289460 | 1 |