4 Brothers Transportation Llc is an active interstate carrier based in Ontario, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 1 | 0 | 0 |
| Tractors | 1 | 0 | 0 |
| Trailers | 1 | 0 | 0 |
| Total Power Units | 1 | ||
Distinct vehicles · 24 mo
vs 1 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 96% | 96% | Worse than most peers |
| HOS Compliance | 99% | 99% | Worse than most peers |
| Driver Fitness | 99% | 98% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 95% | 95% | Worse than most peers |
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 | 1 | — | 6.67% |
| Vehicle | 0 | 0 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
Inspected in 1 state. Top state AZ accounts for 100% of activity. Activity outside home state (CA): 100%.
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jan 14, 2026 | AZ | TRUCK TRACTOR | 3 | 1 |
| Feb 17, 2025 | AZ | TRUCK TRACTOR | 5 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jan 14, 2026 |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 32
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 4.53 | — |
| HOS Compliance | 1 | 6.00 | — |
| Vehicle Maintenance | 2 | 8.66 | — |
| Driver Fitness | 1 | 2.66 | — |
| Controlled Substances | 0 | 0.00 | — |
| 5 |
| 1 |
| 0 |
| Driver Fitness | 1 | 1 | 0 |
| Hours-of-Service Compliance | 1 | 1 | 1 |
| Unsafe Driving | 1 | 0 | 0 |
| 39311BCSRIGRR |
| Conspicuity Systems - Trailers rear impact guard retro reflective sheeting inadequate on vehicle manufactured on or after December 1 1993 |
| Vehicle Maintenance |
| — |
| Jan 14, 2026 | 39355C2B | Air Brake - CMV other than truck-tractor manufactured on or after March 1 1998 not equipped with an antilock brake system. System does not function or indicates | Vehicle Maintenance | — |
| Jan 14, 2026 | 3958EHOSPD | HOS (Property) - No driver may make a false report in connection with a duty status. Explain | Hours-of-Service Compliance | Yes |
| Feb 17, 2025 | 38323A2LCDLNP | License (CDL) - Operate a CMV while not in possession of a CDL on person | Driver Fitness | — |
| Feb 17, 2025 | 3922SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | Vehicle Maintenance | — |
| Feb 17, 2025 | 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 | — |
| Feb 17, 2025 | 39311BCSURR | Conspicuity Systems - Trailers upper rear retro reflective sheeting inadequate on vehicle manufactured on or after December 1 1993 | Vehicle Maintenance | — |
| Feb 17, 2025 | 39375CTAOTDLT232 | Tires - Less than 2/32 inch tread depth | Vehicle Maintenance | — |
Inguz Group Llc
Laredo, TX
Luis Mendez · also at 32 others
+22 more