Mainfreight Inc is an active interstate carrier based in Carol Stream, IL.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 311 | 149 | 0 |
| Tractors | 0 | 162 | 0 |
| Trailers | 46 | 417 | 0 |
| Total Power Units | 311 | ||
Distinct vehicles · 24 mo
vs 311 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 39% | 83% | Around peer average |
| HOS Compliance | 74% | 90% | Around peer average |
| Driver Fitness | 79% | 91% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 50% | 82% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 13 | — | 6.67% |
| Vehicle | 0 | 43 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Oct 1, 2025 | 0 | 1 | 1 | 1 |
| Apr 1, 2025 | 0 | 0 | 1 | 1 |
| Oct 1, 2024 | 0 | 1 | 3 | 3 |
| Jul 1, 2024 | 0 | 2 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 230 | 60 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 24, 2026 | MD | TRUCK TRACTOR | 2 | 0 |
| Mar 19, 2026 | NY | STRAIGHT TRUCK | 0 | 0 |
| Mar 19, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Mar 17, 2026 | NJ | STRAIGHT TRUCK | 0 | 0 |
| Mar 17, 2026 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 55 | 0.73 | — |
| HOS Compliance | 22 | 0.41 | — |
| Vehicle Maintenance | 116 | 3.45 | — |
| Driver Fitness | 8 | 0.14 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 32 states. Top state CA accounts for 33% of activity. Activity outside home state (IL): 100%.
+27 other states with fewer inspections
| 48 |
| Unsafe Driving | 62 | 27 | 0 |
| Hours-of-Service Compliance | 28 | 7 | 10 |
| Driver Fitness | 9 | 3 | 5 |
| NJ |
| STRAIGHT TRUCK |
| 1 |
| 0 |
| Mar 17, 2026 | NY | STRAIGHT TRUCK | 1 | 0 |
| Mar 13, 2026 | MD | TRUCK TRACTOR | 0 | 0 |
| Mar 12, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Mar 12, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Mar 11, 2026 | AZ | TRUCK TRACTOR | 2 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 24, 2026 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Mar 24, 2026 | 3958EHOSPD | HOS (Property) - No driver may make a false report in connection with a duty status. Explain | Hours-of-Service Compliance | — |
| Mar 17, 2026 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Mar 17, 2026 | 3939ALLPL | Lighting - License plate lamp inoperative | Vehicle Maintenance | — |
| Mar 11, 2026 | 3922SLLSWZ | State/Local Laws - Speeding work/construction zone | Unsafe Driving | — |
| Mar 11, 2026 | 3922SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g. safety official signal sign light lane marking other | Unsafe Driving | — |
| Mar 10, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Mar 10, 2026 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Mar 10, 2026 | 3963A1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Vehicle Maintenance | Yes |
| Mar 10, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |