Southwest Trailer Service Inc is an active interstate carrier based in Ridgefield, WA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 5 | 0 | 0 |
| Tractors | 1 | 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 | 94% | 96% | Worse than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 96% | 98% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 77% | 87% | 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 | 2 | — | 6.67% |
| Vehicle | 0 | 0 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Unsafe Driving |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jul 23, 2026 | WA | STRAIGHT TRUCK | 1 | 0 |
| May 28, 2026 | WA | STRAIGHT TRUCK | 1 | 0 |
| Dec 4, 2025 | WA | STRAIGHT TRUCK | 1 | 0 |
| Oct 3, 2025 | WA | STRAIGHT TRUCK | 1 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 4 | 6.18 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 2 | 1.20 | — |
| Driver Fitness | 1 | 1.00 | — |
| Controlled Substances | 0 | 0.00 | — |
Where they run
Inspected in 2 states. Top state WA accounts for 88% of activity. Activity outside home state (WA): 12%.
| 4 |
| 2 |
| 0 |
| Driver Fitness | 3 | 1 | 3 |
| Vehicle Maintenance | 3 | 0 | 0 |
| Jul 2, 2025 |
| WA |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| May 9, 2025 | WA | STRAIGHT TRUCK | 1 | 0 |
| Apr 14, 2025 | WA | STRAIGHT TRUCK | 3 | 2 |
| May 16, 2024 | OR | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jul 23, 2026 | 39282DUMT | Driver - Using a hand-held mobile telephone | Unsafe Driving | — |
| May 28, 2026 | 39282DUMT | Driver - Using a hand-held mobile telephone | Unsafe Driving | — |
| Dec 4, 2025 | 39395F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | — |
| Oct 3, 2025 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| May 9, 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 | — |
| Apr 14, 2025 | 38395ALCDL | Restriction - (CDL) - Operate a CMV in violation of a restriction | Driver Fitness | Yes |
| Apr 14, 2025 | 39141AMCPC | Medical (Certificate) - Operating a commercial motor vehicle without showing proof of a valid medical certification upon request but presents proof prior to com | Driver Fitness | Yes |
| Apr 14, 2025 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |
| Apr 14, 2025 | 39141AMCPC | Medical (Certificate) - Operating a commercial vehicle without showing proof of a valid medical certification upon request when medical certification is required. | Driver Fitness | Yes |
| May 16, 2024 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |