DBA: Vulcan Materials Company Shamrock Materials Inc
Calmat Co is an active interstate carrier based in Irwindale, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 32 | 0 | 0 |
| Tractors | 53 | 0 | 0 |
| Trailers | 2 | 0 | 0 |
| Total Power Units | 89 | ||
Distinct vehicles · 24 mo
vs 89 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 | 63% | 92% | Around peer average |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 45% | 84% | 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 | 2 | — | 22.26% |
| Hazmat | 3 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 13 | 3 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 23, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 5, 2026 | CA | STRAIGHT TRUCK | 1 | 0 |
| Feb 5, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Feb 4, 2026 | CA | STRAIGHT TRUCK | 2 | 0 |
| Jan 13, 2026 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 1 | 0.08 | — |
| Vehicle Maintenance | 10 | 1.57 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state CA accounts for 98% of activity. Activity outside home state (CA): 2%.
| 0 |
| Hazardous Materials Compliance | 4 | 1 | 2 |
| Hours-of-Service Compliance | 1 | 1 | 0 |
| CA |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Jan 6, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Dec 20, 2025 | CA | STRAIGHT TRUCK | 1 | 0 |
| Dec 19, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Dec 3, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Nov 19, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 5, 2026 | 3939ALHLI | Lighting - Headlamp(s) - Any inoperative | Vehicle Maintenance | — |
| Feb 4, 2026 | 39311A1LHLM | Lighting - Headlamp(s) - Any missing | Vehicle Maintenance | — |
| Feb 4, 2026 | 39375CTAOTDLT232 | Tires - Less than 2/32 inch tread depth | Vehicle Maintenance | — |
| Dec 20, 2025 | 39395KEE | Emergency Equipment - Stopped vehicle warning devices inadequate flag size | Vehicle Maintenance | — |
| Oct 20, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Oct 20, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Oct 20, 2025 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Oct 20, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Jul 7, 2025 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Jun 11, 2025 | 172331CHMM | HM (Markings) - Failing to mark a motor vehicle transporting other bulk package(s) with ID numbers as required | Hazardous Materials Compliance | — |