DBA: Southwest Signal Service
Southwest Traffic Signal Service Inc is an active intrastate non-hazmat carrier based in El Cajon, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 7 | 2 | 0 |
| Trailers | 7 | 0 | 0 |
| Total Power Units | 9 | ||
Distinct vehicles · 24 mo
vs 9 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 | 0% | 0% | Better 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 | 95% | 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 | 0 | — | 6.67% |
| Vehicle | 0 | 4 | — | 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 | 21 | 6 | 6 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Sep 8, 2026 | CA | STRAIGHT TRUCK | 11 | 2 |
| Feb 17, 2026 | CA | STRAIGHT TRUCK | 8 | 2 |
| Mar 13, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Mar 13, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 1
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 1.70 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 4 | 12.76 | — |
| 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 | 1 | 0 |
| Mar 13, 2025 |
| CA |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Mar 13, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Nov 7, 2024 | CA | STRAIGHT TRUCK | 1 | 0 |
| Nov 7, 2024 | CA | STRAIGHT TRUCK | 0 | 0 |
| Nov 7, 2024 | CA | STRAIGHT TRUCK | 0 | 0 |
| Nov 7, 2024 | CA | STRAIGHT TRUCK | 2 | 2 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Sep 8, 2026 | 39216BCPASS | Co-Driver - Failed to use seat belt while riding in a property-carrying CMV. | Unsafe Driving | — |
| Sep 8, 2026 | 3927AD | Driver - Failed to conduct pre-trip inspection or make use of required parts and accessories | Vehicle Maintenance | — |
| Sep 8, 2026 | 393100BC | Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Vehicle Maintenance | — |
| Sep 8, 2026 | 39311A1LRR | Lighting - Reflex reflector(s) missing or improper | Vehicle Maintenance | — |
| Sep 8, 2026 | 39311A1LSML | Lighting - Side marker lamp(s) missing | Vehicle Maintenance | — |
| Sep 8, 2026 | 39340FBNPB | Brake - Inoperative or missing parking/emergency brake on power unit | Vehicle Maintenance | Yes |
| Sep 8, 2026 | 39345ABLHF | Hydraulic Any Observed Leaking Hydraulic Fluid | Vehicle Maintenance | Yes |
| Sep 8, 2026 | 39375CTAOTDLT232 | Tires - Less than 2/32 inch tread depth | Vehicle Maintenance | — |
| Sep 8, 2026 | 39395F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | — |
| Sep 8, 2026 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |