FREDERICK MD
Roadside inspection site in Maryland • 4,767 inspections on record
About This Inspection Site
FREDERICK MD is a roadside inspection location in Maryland where FMCSA-certified inspectors conduct safety inspections of commercial motor vehicles under the Motor Carrier Safety Assistance Program (MCSAP). This site has conducted 4,767 recorded inspections from Jan 1, 2020 to Apr 2, 2026.
A total of 2,723 unique carriers have been inspected at this site. The average number of violations per inspection is 1.8. The out-of-service rate is 31.1%, meaning a significant portion of inspected vehicles or drivers are placed out of service for safety deficiencies.
Inspections follow CVSA (Commercial Vehicle Safety Alliance) North American Standard procedures and may include weight checks, credential verification, mechanical inspection, hours-of-service compliance review, and hazardous materials documentation checks. Vehicles or drivers that fail critical safety criteria are placed out of service until deficiencies are corrected.
The most frequently cited violation at this site is Brake tubing/hoses inadequate (Vehicle Maintenance) with 630 citations, followed by Slack adjuster defective (629 citations). A total of 100 distinct violation codes have been cited at this location.
Inspection Level Breakdown
4,767 inspections by CVSA level
Top Violations
100 violation codes cited at this site (page 1 of 2)
| # | Code | Description | BASIC Category | Citations | OOS | OOS % |
|---|---|---|---|---|---|---|
| 1 | 393.45D-B | Brake tubing/hoses inadequate | Vehicle Maintenance | 630 | 0 | — |
| 2 | 393.47E | Slack adjuster defective | Vehicle Maintenance | 629 | 0 | — |
| 3 | 393.53B-B | Steering system components worn | Vehicle Maintenance | 368 | 0 | — |
| 4 | 393.9A-LIL | Inoperable required lamps | Vehicle Maintenance | 351 | 0 | — |
| 5 | 393.75A3-TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | 339 | 339 | 100.0% |
| 6 | 396.5B-L | Fuel system leak | Vehicle Maintenance | 303 | 0 | — |
| 7 | 396.3A1-BOS | BRAKES OUT OF SERVICE: The number of defective brakes is equal to or greater than 20 percent of the service brakes on the vehicle or combination | Vehicle Maintenance | 217 | 217 | 100.0% |
| 8 | 393.9A-LHWS | Inoperable required lamps | Vehicle Maintenance | 188 | 0 | — |
| 9 | 390.21TB2-DOT | 390.21TB2-DOT | General/Admin | 172 | 0 | — |
| 10 | 390.21TB1-MC | 390.21TB1-MC | General/Admin | 171 | 0 | — |
| 11 | 393.9A-LTSI | Inoperable required lamps | Vehicle Maintenance | 161 | 161 | 100.0% |
| 12 | 391.41APC | Medical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency | Driver Fitness | 156 | 155 | 99.4% |
| 13 | 393.9A-LCL | Inoperable required lamps | Vehicle Maintenance | 144 | 0 | — |
| 14 | 393.41-BNPB | Brake - Inoperative or missing parking brake on power unit | Vehicle Maintenance | 139 | 139 | 100.0% |
| 15 | 396.3A1-BALAC | Brake - Audible air leak from a brake chamber | Vehicle Maintenance | 138 | 0 | — |
| 16 | 392.2-SLLSR | Operating a CMV while ill or fatigued | Unsafe Driving | 136 | 0 | — |
| 17 | 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | 134 | 0 | — |
| 18 | 393.45B2-B-AIR | Brake tubing/hoses inadequate | Vehicle Maintenance | 121 | 0 | — |
| 19 | 393.95F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | 119 | 0 | — |
| 20 | 393.9A-LLPL | Inoperable required lamps | Vehicle Maintenance | 116 | 0 | — |
| 21 | 393.9A-LFTSI | Inoperable required lamps | Vehicle Maintenance | 109 | 0 | — |
| 22 | 393.9A-LSLIWR | Inoperable required lamps | Vehicle Maintenance | 101 | 101 | 100.0% |
| 23 | 393.9A-LHLI | Inoperable required lamps | Vehicle Maintenance | 100 | 0 | — |
| 24 | 393.100B-C | Cargo securement - aggregate working load | Vehicle Maintenance | 99 | 99 | 100.0% |
| 25 | 393.43DBMA | Brake - relay emergency valve | Vehicle Maintenance | 85 | 85 | 100.0% |
| 26 | 392.16-D | Failing to use seat belt (49 CFR) | Unsafe Driving | 84 | 0 | — |
| 27 | 392.9A2-C | Cargo - Vehicle components or dunnage not secured | Unsafe Driving | 79 | 79 | 100.0% |
| 28 | 393.9A-LSLI | Inoperable required lamps | Vehicle Maintenance | 77 | 0 | — |
| 29 | 393.60C | Glazing/window obstructions | Vehicle Maintenance | 73 | 0 | — |
| 30 | 392.2-SLLTCD | Operating a CMV while ill or fatigued | Unsafe Driving | 69 | 0 | — |
| 31 | 393.9A-HLLH | Inoperable required lamps | Vehicle Maintenance | 67 | 0 | — |
| 32 | 393.11A1-LLPL | Lighting devices/reflectors | Vehicle Maintenance | 61 | 0 | — |
| 33 | 393.9A-LRLI | Inoperable required lamps | Vehicle Maintenance | 59 | 0 | — |
| 34 | 393.78A-WS | Windshield condition defective | Vehicle Maintenance | 56 | 0 | — |
| 35 | 393.48A-BIBD | Inoperative/defective brakes | Vehicle Maintenance | 55 | 0 | — |
| 36 | 396.17C-PI | No proof of periodic inspection | Vehicle Maintenance | 51 | 0 | — |
| 37 | 393.95A4-EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | 50 | 0 | — |
| 38 | 383.23A2-LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | 50 | 50 | 100.0% |
| 39 | 393.43D-B | Brake - relay emergency valve | Vehicle Maintenance | 46 | 46 | 100.0% |
| 40 | 393.45B2-BHTD | Brake tubing/hoses inadequate | Vehicle Maintenance | 46 | 46 | 100.0% |
| 41 | 393.209D-STBSP | Wheel fasteners loose/missing | Vehicle Maintenance | 44 | 44 | 100.0% |
| 42 | 393.45D-BAAL | Brake tubing/hoses inadequate | Vehicle Maintenance | 43 | 43 | 100.0% |
| 43 | 392.2-SLLS4 | Speeding 15+ mph over limit | Unsafe Driving | 41 | 0 | — |
| 44 | 393.75C-TAOTD-LT2/32 | Tire tread depth insufficient (other axles) | Vehicle Maintenance | 41 | 0 | — |
| 45 | 392.2-SLLEWA1 | Operating a CMV while ill or fatigued | Unsafe Driving | 40 | 0 | — |
| 46 | 396.3A1-ALATR | Air Brake - Any leak from an air tank reservoir. | Vehicle Maintenance | 38 | 0 | — |
| 47 | 391.41B10-MC | Medical (Certificate) - Operating a commercial vehicle without corrective lenses or hearing aid as indicated on the driver's medical certificate | Driver Fitness | 36 | 36 | 100.0% |
| 48 | 395.8A1-HOSP | HOS (Property) - Failing to have a record of duty status using the method prescribed | Hours of Service | 35 | 35 | 100.0% |
| 49 | 393.75C-TAOTD-LT1/32 | Tire tread depth insufficient (other axles) | Vehicle Maintenance | 34 | 21 | 61.8% |
| 50 | 393.9(a) | Inoperable required lamps | Vehicle Maintenance | 31 | 4 | 12.9% |
Top Carriers Inspected
20 most frequently inspected carriers at this site
| # | Carrier | USDOT | State | Inspections |
|---|---|---|---|---|
| 1 | CONTAINERPORT GROUP INC | 232734 | OH | 116 |
| 2 | LIGHTNING TRANSPORTATION INC | 326966 | MD | 59 |
| 3 | UNIVERSAL LOGISTICS OF VIRGINIA LLC | 3330935 | VA | 34 |
| 4 | COMMERCIAL TRANSPORTATION LLC | 85508 | PA | 30 |
| 5 | COWAN INTERMODAL GROUP LLC | 215194 | MD | 30 |
| 6 | ADUSA TRANSPORTATION LLC | 57029 | NC | 26 |
| 7 | EVANS DELIVERY COMPANY INC | 38111 | PA | 23 |
| 8 | STG DRAYAGE LLC | 688143 | OH | 20 |
| 9 | J & J INC | 1070958 | MD | 19 |
| 10 | WESTERN EXPRESS INC | 511412 | TN | 19 |
| 11 | C & K TRUCKING LLC | 540864 | IL | 19 |
| 12 | SCHNEIDER NATIONAL CARRIERS INC | 264184 | WI | 19 |
| 13 | VINNY'S TOWING AND RECOVERY LLC | 1561159 | MD | 19 |
| 14 | CENTRAL STATES TRUCKING LLC | 185732 | IL | 18 |
| 15 | ON THE TOWN LIMOUSINES INC | 1273192 | MD | 18 |
| 16 | E F CORPORATION | 113693 | PA | 17 |
| 17 | FERGUSON ENTERPRISES LLC | 282018 | VA | 15 |
| 18 | SWIFT TRANSPORTATION CO OF ARIZONA LLC | 54283 | AZ | 14 |
| 19 | SEI ACQUISITION LLC | 484360 | IL | 14 |
| 20 | CARROLL INDEPENDENT FUEL LLC | 336632 | MD | 14 |
Recent Inspections
4,767 inspections at this site (page 1 of 191)