Granite Rock Company is an active intrastate hazmat carrier based in Watsonville, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 229 | 65 | 0 |
| Tractors | 35 | 18 | 0 |
| Trailers | 71 | 9 | 0 |
| Total Power Units | 351 | ||
Distinct vehicles · 24 mo
vs 351 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 | 30% | 93% | Better than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 40% | 96% | Around peer average |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 50% | 85% | Around peer average |
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 | 12 | — | 22.26% |
| Hazmat | 3 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Oct 1, 2025 | 0 | 1 | 1 | 1 |
| Jul 1, 2025 | 0 | 0 | 1 | 1 |
| Jan 1, 2025 | 0 | 1 | 1 | 1 |
| Oct 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 49 | 14 | 14 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 25, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Mar 18, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Mar 11, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 26, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 20, 2026 | CA |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 0.04 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 31 | 1.85 | — |
| Driver Fitness | 1 | 0.04 | — |
| 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 | 2 | 1 | 0 |
| Driver Fitness | 1 | 1 | 1 |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Feb 19, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 19, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 17, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 13, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 11, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 3, 2026 | 3922SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | Vehicle Maintenance | — |
| Feb 2, 2026 | 39347ABCLMBD | Drum Brake - Cracked/loose/missing lining/pad | Vehicle Maintenance | — |
| Feb 2, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Feb 2, 2026 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Feb 2, 2026 | 3963A1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Vehicle Maintenance | Yes |
| Nov 25, 2025 | 3939ALBL | Lighting - Backup lamp inoperative | Vehicle Maintenance | — |
| Oct 17, 2025 | 3939ALRLI | Lighting - Tail lamp - Any inoperative | Vehicle Maintenance | — |
| Oct 8, 2025 | 393100CC | Cargo - Cargo not secured against shifting | Vehicle Maintenance | — |
| Sep 30, 2025 | 39375A1TFBMF | Tires - Front belt material/casing ply showing in tread area | Vehicle Maintenance | Yes |
| Sep 30, 2025 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |