GRANITE ROCK COMPANY
351-unit tanker operator based in Watsonville, CA. Current peer-cohort grade: A (strong).
- USDOT
- 714188
- MC
- MC207735
- Based
- Watsonville, CA
- Contact
- 8317682000 · dleffel@graniterock.com
What this carrier is
GRANITE ROCK COMPANY is a large-fleet tanker operator based in Watsonville, CA. Operating footprint: 351 power units, 396 drivers. The carrier runs local lanes and holds active MC207735 authority. Listed cargo classifications include building materials, machinery, large objects, liquids and gases, and dry bulk commodities.
Fleet composition on file: 229 owned trucks, 35 owned tractors, 71 owned trailers, 18 term-leased tractors, 9 term-leased trailers.
For shippers and brokers: this carrier reads as low-risk on peer-cohort measures with no acute or critical flags in the current window.
At a glance
Safety record
Grade shown here is ProHRHQ analysis based on public FMCSA data. It is not an official FMCSA safety rating. The authoritative federal record is on FMCSA SAFER/SMS.
Current peer-cohort snapshot based on public FMCSA BASIC measures. Peer cohort: 45 motor carriers operating 350–352 power units.
No acute or critical violation flags in the current review window.
The strongest signal is Hours-of-Service at 0.0% of peer cohort average — well under norm. Combined with a clean acute-flag picture, that supports the A grade. Main caution: nothing stands out as disqualifying on this record.
| BASIC | Carrier (3yr, weighted) | Cohort avg | vs. cohort | Acute |
|---|---|---|---|---|
| Unsafe Driving | 77 | 107.57 | 71.6% | No |
| Hours-of-Service | 0 | 38.93 | 0.0% | No |
| Driver Fitness | 0 | 1.93 | 0.0% | No |
| Controlled Substances/Alcohol | 0 | 0.00 | — | No |
| Vehicle Maintenance | 79 | 114.93 | 68.7% | No |
| Hazmat | 0 | 0.21 | 0.0% | n/a |
Against similarly sized 350–352-power-unit peers, this carrier is below cohort average in Unsafe Driving, Hours-of-Service, Driver Fitness, and Vehicle Maintenance.
Inspection and violation record
Last 3 years of public roadside history for USDOT 714188: 171 inspections across 1 state. Most recent inspection: Apr 14, 2026 in CA.
| BASIC | Violations (3 yr) |
|---|---|
| Unsafe Driving | 59 |
| Vehicle Maintenance | 69 |
| Hazmat | 1 |
| Total violations | 134 (19 out-of-service) |
Crash record (3 yr): 6 reportable crashes , 2 with reported injuries . Most recent: Dec 17, 2025.
What this carrier likely fits
This is a tanker operator that runs local lanes, primarily intrastate, at a large fleet scale, with building materials, machinery, large objects, liquids and gases, and other listed classes on the FMCSA cargo classification list. Trailer-heavy fleet composition (80 trailers against 53 tractors) is consistent with drop-and-hook or dedicated lane operation.
Drawn from FMCSA-reported cargo classifications, route profile, and fleet composition. Not a substitute for direct confirmation of equipment and lane capability with the carrier.
Key takeaways
- Grade A (strong) against 45 peer carriers operating 350–352 power units.
- No acute or critical violation flags in the current review window.
- 119 inspections in the 24-month SMS window (1 driver OOS, 14 vehicle OOS).
- Three-year public record: 134 violations, 6 reportable crashes.
- Hours-of-Service is the strongest area — 0.0% of peer cohort average (well under norm).
- Operates as a large-fleet tanker operator running local lanes with 351 power units on file.
Is this your carrier?
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