DBA: Cosio & Son Trucking
Esteban G Cosio is an active interstate carrier based in Potrero, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 6 | 0 | 0 |
| Tractors | 6 | 0 | 0 |
| Total Power Units | 6 | ||
Distinct vehicles · 24 mo
vs 6 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 95% | 97% | Worse than most peers |
| HOS Compliance | 81% | 93% | Worse than most peers |
| Driver Fitness | 88% | 96% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 74% | 90% | 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 | 1 | — | 6.67% |
| Vehicle | 0 | 11 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 48 | 7 | 9 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 17, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Mar 13, 2026 | WA | TRUCK TRACTOR | 2 | 0 |
| Mar 4, 2026 | OR | TRUCK TRACTOR | 2 | 2 |
| Feb 27, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 7.08 | — |
| HOS Compliance | 7 | 0.32 | — |
| Vehicle Maintenance | 23 | 4.32 | — |
| Driver Fitness | 2 | 0.31 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 13 states. Top state CA accounts for 66% of activity. Activity outside home state (CA): 34%.
+8 other states with fewer inspections
| Hours-of-Service Compliance | 7 | 3 | 0 |
| Driver Fitness | 2 | 1 | 1 |
| Unsafe Driving | 2 | 1 | 0 |
| Feb 25, 2026 |
| CA |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Feb 10, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Feb 2, 2026 | CA | TRUCK TRACTOR | 0 | 1 |
| Jan 28, 2026 | OH | TRUCK TRACTOR | 0 | 0 |
| Jan 22, 2026 | OH | TRUCK TRACTOR | 1 | 0 |
| Jan 9, 2026 | CA | TRUCK TRACTOR | 2 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 13, 2026 | 39355D1B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1 1997 and each single unit CMV on or after 1998. | Vehicle Maintenance | — |
| Mar 13, 2026 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Mar 4, 2026 | 393207FSDAS | Suspension - Deflated air suspension | Vehicle Maintenance | Yes |
| Mar 4, 2026 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Jan 22, 2026 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Jan 9, 2026 | 39111B2Z | Border Zone - Driver cannot satisfy the English language proficiency requirements of 391.11(b)(2) as per FMCSA Enforcement Guidance Memo MC-SEE-2025-0001. | Driver Fitness | — |
| Jan 9, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Jan 5, 2026 | 39282DUMT | Driver - Using a hand-held mobile telephone | Unsafe Driving | — |
| Jan 5, 2026 | 39522G | Portable ELD not mounted in a fixed position and visible to driver | Hours-of-Service Compliance | — |
| Jan 3, 2026 | 3939ALLPL | Lighting - License plate lamp inoperative | Vehicle Maintenance | — |