American Underground Contractor is an active intrastate non-hazmat carrier based in Byron, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 3 | 0 | 0 |
| Trailers | 5 | 0 | 0 |
| Total Power Units | 3 | ||
Distinct vehicles · 24 mo
vs 3 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 86% | 94% | Worse than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 83% | 92% | 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 | 0 | — | 6.67% |
| Vehicle | 0 | 1 | — | 22.26% |
| Hazmat | 0 | 0 |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 9 | 4 | 1 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jun 12, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Jun 7, 2025 | CA | STRAIGHT TRUCK | 3 | 1 |
| May 28, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| May 22, 2025 | CA | STRAIGHT TRUCK | 2 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 1.33 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 5 | 5.61 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| — |
| 4.44% |
Where they run
Inspected in 1 state. Top state CA accounts for 100% of activity. Activity outside home state (CA): 0%.
| Unsafe Driving |
| 1 |
| 0 |
| 0 |
| Mar 4, 2025 |
| CA |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Feb 24, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 3, 2025 | CA | STRAIGHT TRUCK | 1 | 0 |
| Aug 20, 2024 | CA | STRAIGHT TRUCK | 2 | 0 |
| Jul 30, 2024 | CA | STRAIGHT TRUCK | 0 | 0 |
| Apr 26, 2024 | CA | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jun 7, 2025 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Jun 7, 2025 | 3939ALSLI | Lighting - Stop lamps - Any inoperative. | Vehicle Maintenance | — |
| Jun 7, 2025 | 3939ALTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | Vehicle Maintenance | Yes |
| May 22, 2025 | 3939ALRLI | Lighting - Tail lamp - Any inoperative | Vehicle Maintenance | — |
| May 22, 2025 | 3939BLRLOWR | Lighting - Tail lamp - Both lamps on rearmost vehicle obscured when required to be on | Vehicle Maintenance | — |
| Feb 3, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Aug 20, 2024 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Aug 20, 2024 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |
| Apr 25, 2024 | 3965A | Failing to ensure that vehicle is properly lubricated | Vehicle Maintenance | — |
| Apr 8, 2024 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |