Happy Y Express Inc is an active interstate carrier based in Diamond Bar, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 2 | 0 | 0 |
| Tractors | 2 | 0 | 0 |
| Trailers | 0 | 0 | 2 |
| Total Power Units | 2 | ||
Distinct vehicles · 24 mo
vs 2 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 95% | 97% | Worse than most peers |
| Driver Fitness | 96% | 98% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 95% | 97% | 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 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
Inspected in 2 states. Top state CA accounts for of activity.
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 10 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Nov 12, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Oct 2, 2025 | AZ | TRUCK TRACTOR | 3 | 1 |
| Aug 26, 2025 | CA | TRUCK TRACTOR | 2 | 0 |
| Aug 13, 2025 | CA | TRUCK TRACTOR | 2 | 1 |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 1
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 2 | 1.69 | — |
| Vehicle Maintenance | 5 | 13.81 | — |
| Driver Fitness | 1 | 1.53 | — |
| Controlled Substances | 0 | 0.00 | — |
| 5 |
| 2 |
| Hours-of-Service Compliance | 3 | 0 | 1 |
| Driver Fitness | 1 | 1 | 1 |
| Aug 5, 2025 | CA | TRUCK TRACTOR | 7 | 2 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Oct 2, 2025 | 39355C2B | Air Brake - CMV other than truck-tractor manufactured on or after March 1 1998 not equipped with an antilock brake system. System does not function or indicates | Vehicle Maintenance | — |
| Oct 2, 2025 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Oct 2, 2025 | 3958A1HOSP | HOS (Property) - Failing to have a record of duty status using the method prescribed | Hours-of-Service Compliance | Yes |
| Aug 26, 2025 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Aug 26, 2025 | 3939ALRLI | Lighting - Tail lamp - Any inoperative | Vehicle Maintenance | — |
| Aug 13, 2025 | 39355C1B | Air Brake - Truck-tractor manufactured on or after March 1 1997 not equipped with an ABS system. System does not function or indicates a fault. | Vehicle Maintenance | — |
| Aug 13, 2025 | 3939ALSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | Vehicle Maintenance | Yes |
| Aug 5, 2025 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Aug 5, 2025 | 393209ESPSLA | Steering - Power steering leaking anywhere. | Vehicle Maintenance | — |
| Aug 5, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |