503 Transportation Inc is an active interstate carrier based in Carson, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 7 | 0 | 0 |
| Tractors | 7 | 0 | 0 |
| Total Power Units | 7 | ||
Distinct vehicles · 24 mo
vs 7 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 72% | 93% | Around peer average |
| 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 | 93% | 96% | 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 | 11 | — | 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 | 22 | 14 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Apr 9, 2026 | CA | TRUCK TRACTOR | 1 | 1 |
| Feb 18, 2026 | CA | TRUCK TRACTOR | 5 | 1 |
| Feb 11, 2026 | CA | TRUCK TRACTOR | 1 | 1 |
| Jan 9, 2026 | CA | TRUCK TRACTOR | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.31 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 9 | 9.50 | — |
| Driver Fitness | 1 | 1.11 | — |
| 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%.
| 12 |
| Driver Fitness | 1 | 1 | 1 |
| Unsafe Driving | 1 | 0 | 0 |
| 0 |
| Dec 26, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Nov 27, 2025 | CA | TRUCK TRACTOR | 1 | 0 |
| Nov 18, 2025 | CA | TRUCK TRACTOR | 2 | 1 |
| Oct 24, 2025 | CA | TRUCK TRACTOR | 2 | 2 |
| Aug 19, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Jul 21, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Apr 9, 2026 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Feb 18, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Feb 18, 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 |
| Feb 18, 2026 | 39381H | Horn - Inoperative or defective | Vehicle Maintenance | — |
| Feb 18, 2026 | 39395F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | — |
| Feb 18, 2026 | 3963A1ALBV | Air Brake - Any leak from a brake valve | Vehicle Maintenance | — |
| Feb 11, 2026 | 3939ALSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | Vehicle Maintenance | Yes |
| Nov 27, 2025 | 3922SLLUP | State/Local Laws - Unlawfully parking /leaving vehicle on roadway | Unsafe Driving | — |
| Nov 18, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Nov 18, 2025 | 3939ALRLI | Lighting - Tail lamp - Any inoperative | Vehicle Maintenance | — |