Mm Brothers Inc is an active interstate carrier based in Naperville, IL.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 69 | 0 | 0 |
| Tractors | 69 | 0 | 0 |
| Trailers | 59 | 0 | 0 |
| Total Power Units | 69 | ||
Distinct vehicles · 24 mo
vs 69 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 83% | 92% | Worse than most peers |
| HOS Compliance | 64% | 89% | Around peer average |
| Driver Fitness | 88% | 93% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 60% | 85% | 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 | 8 | — | 6.67% |
| Vehicle | 0 | 17 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Oct 1, 2025 | 0 | 1 | 1 | 1 |
| Jul 1, 2025 | 0 | 1 | 1 | 1 |
| Oct 1, 2024 | 0 | 0 | 2 | 2 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 72 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 20, 2026 | MO | TRUCK TRACTOR | 1 | 0 |
| Mar 19, 2026 | AL | TRUCK TRACTOR | 0 | 0 |
| Mar 18, 2026 | WA | TRUCK TRACTOR | 0 | 0 |
| Mar 16, 2026 | MT | TRUCK TRACTOR | 2 | 0 |
| Mar 16, 2026 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 24 | 4.12 | — |
| HOS Compliance | 8 | 0.29 | — |
| Vehicle Maintenance | 36 | 4.50 | — |
| Driver Fitness | 6 | 0.35 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 35 states. Top state CA accounts for 13% of activity. Activity outside home state (IL): 94%.
+30 other states with fewer inspections
| 15 |
| Unsafe Driving | 26 | 13 | 0 |
| Hours-of-Service Compliance | 8 | 1 | 2 |
| Driver Fitness | 6 | 4 | 6 |
| WA |
| TRUCK TRACTOR |
| 3 |
| 1 |
| Mar 15, 2026 | MT | TRUCK TRACTOR | 0 | 0 |
| Mar 13, 2026 | MO | TRUCK TRACTOR | 0 | 0 |
| Mar 11, 2026 | NE | TRUCK TRACTOR | 0 | 0 |
| Mar 5, 2026 | OR | TRUCK TRACTOR | 1 | 0 |
| Mar 5, 2026 | IN | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 20, 2026 | 39216AD | Driver - Failed to use seat belt while operating a CMV. | Unsafe Driving | — |
| Mar 16, 2026 | 393203CCBP | Cab and Body Parts - Hood not securely fastened | Vehicle Maintenance | — |
| Mar 16, 2026 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Mar 16, 2026 | 3929A2C | Cargo - Vehicle components or dunnage not secured | Vehicle Maintenance | Yes |
| Mar 16, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Mar 16, 2026 | 39347D2BLTBD | Drum Brake - Inadequate lining/pad thickness | Vehicle Maintenance | — |
| Mar 5, 2026 | 3958E1PC | HOS - False record of duty status driver improper use of Personal Conveyance - Not OOS | Hours-of-Service Compliance | — |
| Mar 5, 2026 | 3922SLLS3 | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | Unsafe Driving | — |
| Mar 4, 2026 | 38323A2LCDL | Endorsements - (CDL) - Operate a CMV without proper endorsements on operators license | Driver Fitness | Yes |
| Feb 25, 2026 | 39313C1CSSRR | Conspicuity Systems - Trailers side retro reflective sheeting inadequate on vehicle manufactured before December 1 1993 | Vehicle Maintenance | — |