HaulerCheck · https://haulercheck.com/carrier/256299-robertsons-ready-mix-ltd-a-california-limited-partnership/ · Checked 2026-10-20 10:03 UTC · Census and inspections Oct 19, 2026 · Authority and insurance: Last known · FMCSA snapshot May 14, 2026
ROBERTSON'S READY MIX LTD A CALIFORNIA LIMITED PARTNERSHIP
No risk signals in the last-known data
How risk signals workNothing in the FMCSA record matched our risk signals. That is not a guarantee, and it does not confirm who you are talking to; follow the checks below. Authority and insurance are last known from May 14, 2026.
MC181673: Common carrier inactive
No cargo cover filed with FMCSA
Green means the FMCSA record shows it. It does not confirm who you are talking to, or that a policy covers your specific load.
Not a live check. FMCSA has not published a Motus record for this carrier, so authority and insurance show the last known status from May 14, 2026. Confirm on Motus ↗ before booking.
What to verify next
- Confirm authority and insurance on the official Motus record ↗: our copy is the last known status from May 14, 2026. Safety record: SAFER ↗.
- Call back on the number on file, (951) 685-4600, not a number from an email or load board.
- Check that the MC number you were given is MC1040325 or MC181673.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Insurance on file
Liability (BI&PD) pays for injury and damage to other people and property; it does not cover the freight. Cargo insurance covers the freight. FMCSA only requires cargo filings from household goods carriers and freight forwarders, so most carriers file none: ask for a cargo certificate that fits your load. No cargo cover filed with FMCSA.
| Type | Docket | Layer | Insurer | Coverage | Effective | Status |
|---|---|---|---|---|---|---|
| Liability (BI&PD) | MC1040325 | Primary | TOKIO MARINE AMERICA INSURANCE COMPANY Policy CAS6407785-05 · 91X | $2,000,000 | Oct 1, 2019 | Active |
Source: Last known · FMCSA snapshot May 14, 2026. Identical filings repeated in the FMCSA data are shown once; a filing listed under two dockets is one policy, not extra coverage. Coverage is the maximum amount filed with FMCSA, not the full policy.
Last known filings. Insurance for this carrier comes from the FMCSA snapshot of May 14, 2026. Policies may have been cancelled or replaced since. Confirm current filings: Motus record ↗ and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 19, 2024 – Oct 19, 2026
24 of 166 · California avg 19.8%
7 of 174 · California avg 6.3%
By quarter inspections and vehicle out-of-service rate
Bar height: inspections in the quarter. Percentage: vehicles put out of service, of vehicle inspections. The first and last quarters are partial.
Where it was inspected 2 states and provinces, 24 months
- CA 162 88.5%
- NV 21 11.5%
Vehicles seen at inspections different VINs, 24 months
Power units: 152
133 straight trucks · 19 tractors
Peterbilt 112Ram/Dodge 33Mack 5Ford 1Kenworth 1Western Star 1
1,239 power units declared on the MCS-150. Inspections see only part of a fleet, so fewer here is normal; many more can mean the registration is out of date.
Trailers: 10
6 semi-trailers · 4 full trailers
Includes trailers the company pulled but does not own, such as shipper or leasing trailers.
Shippers named on inspection reports 24 months
Robertsons 7Robertsons Ready Mix 4Mitsubishi Cement 1Robertson 1
As written by roadside inspectors, who note the shipper on the bill of lading. Only names that appear on at least three different carriers' reports are shown, so private individuals are never listed. A shipper on a report is not a reference.
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Oct 8, 2026 | CA | 1 | 0 | No |
| Oct 7, 2026 | CA | 2 | 0 | No |
| Oct 4, 2026 | CA | 2 | 3 | Yes |
| Oct 2, 2026 | CA | 1 | 2 | No |
| Oct 2, 2026 | CA | 1 | 0 | No |
| Oct 1, 2026 | CA | 2 | 1 | No |
| Sep 23, 2026 | CA | 2 | 1 | No |
| Sep 18, 2026 | NV | 1 | 0 | No |
| Sep 16, 2026 | CA | 1 | 3 | Yes |
| Sep 11, 2026 | CA | 2 | 0 | No |
How these rates are calculated
Period: Oct 19, 2024 – Oct 19, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The California average covers 398,614 vehicle and 510,215 driver inspections of all California-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile ↗ · SAFER snapshot ↗
Violations in FMCSA's SMS last 24 months
143 violations counted in FMCSA's Safety Measurement System (SMS), 36 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 209 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 19, 2024 – Oct 19, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | California share |
|---|---|---|---|---|
| Vehicle Maintenance | 124 | 30 | 86.7% | 71.8% |
| Unsafe Driving | 13 | 0 | 9.1% | 8.0% |
| Driver Fitness | 4 | 4 | 2.8% | 3.2% |
| Hours-of-Service Compliance | 2 | 2 | 1.4% | 16.6% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt Brakes Out of Adjustment · Vehicle Maintenance · code 39347E | 8 | 0 |
| Washers - Inoperative washing system. Windshield/ Glass/ Markings · Vehicle Maintenance · code 39378AWS | 8 | 0 |
| Cargo - Vehicle components or dunnage not secured General Securement · Vehicle Maintenance · code 3929A2C | 7 | 7 |
| Emergency Equipment - Fire Extinguishers - unsecured Emergency Equipment · Vehicle Maintenance · code 39395A4EEUS | 7 | 0 |
| State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g. safety official signal sign light lane marking other Dangerous Driving · Unsafe Driving · code 3922SLLTCD | 6 | 0 |
| Lighting - Clearance lamp(s) inoperative Clearance Identification Lamps/Other · Vehicle Maintenance · code 3939ALCL | 6 | 0 |
| Lighting - Stop lamps - Any inoperative. Lighting · Vehicle Maintenance · code 3939ALSLI | 6 | 0 |
| Operating a CMV without documentation of a periodic inspection Inspection Reports · Vehicle Maintenance · code 39617CPI | 5 | 0 |
| Lighting - Turn signal - Any inoperative on the rearmost vehicle. Lighting · Vehicle Maintenance · code 3939ALTSI | 4 | 4 |
| State/Local Laws - Speeding 11-14 miles per hour over the speed limit Speeding 3 · Unsafe Driving · code 3922SLLS3 | 4 | 0 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 19, 2026. "Share" is this company's mix of violations; the California column is the mix across all California-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 19, 2024 – Oct 19, 2026
10 most recent crashes
| Date | Location | Fatalities | Injuries |
|---|---|---|---|
| Jun 29, 2026 | Redlands, CA | 0 | 0 |
| May 13, 2026 | Los Angeles, CA | 0 | 0 |
| Apr 16, 2026 | Carson, CA | 0 | 0 |
| Mar 27, 2026 | Unincorporated, CA | 0 | 1 |
| Mar 12, 2026 | National City, CA | 0 | 0 |
| Mar 3, 2026 | Los Angeles, CA | 0 | 1 |
| Sep 8, 2025 | Unincorporated, CA | 0 | 1 |
| Aug 11, 2025 | Ontario, CA | 0 | 0 |
| Jul 24, 2025 | Santa Ana, CA | 0 | 1 |
| Jun 6, 2025 | San Diego, CA | 0 | 0 |
Reportable crashes do not imply the carrier was at fault.
Company details FMCSA census · Oct 19, 2026
| USDOT number | 256299 |
|---|---|
| MC / docket | MC1040325, MC181673 |
| Legal name | ROBERTSON'S READY MIX LTD A CALIFORNIA LIMITED PARTNERSHIP |
| Operation | Interstate |
| Business type | Corporation |
| Power units | 1,239 |
| Drivers | 1,239 |
| Annual mileage | 30,836,278 (2024) |
| Hazmat | Yes |
| Safety rating | Satisfactory (Feb 1, 1989) |
| USDOT number added | Mar 8, 1985 · 41 years ago |
| Last MCS-150 update | Jul 22, 2025 |
| Email domain on file | @rrmca.com |
Equipment as declared on the MCS-150
| Owned | Term-leased | |
|---|---|---|
| Tractors | 806 | 185 |
| Straight trucks | 84 | 164 |
| Trailers | 14 | 0 |
Term-leased equipment usually belongs to owner-operators driving under this company's authority.
Cargo carried
Liquids/GasesCommodities Dry BulkOtherUnspecified
Change history
No changes to name, contact details, authority or insurance since we started tracking on Oct 18, 2026. We compare every company's FMCSA record each day.
to see it on your watchlist when something changes.
Questions about ROBERTSON'S READY MIX LTD A CALIFORNIA LIMITED PARTNERSHIP
What does ROBERTSON'S READY MIX LTD A CALIFORNIA LIMITED PARTNERSHIP's operating authority allow?
MC1040325: Common carrier (may haul regulated property for hire for the general public).
Which information about ROBERTSON'S READY MIX LTD A CALIFORNIA LIMITED PARTNERSHIP is old or missing?
Operating authority is the last known status from the FMCSA snapshot of May 14, 2026, not a current check. Insurance filings are from the same May 14, 2026 snapshot.
What should I verify before booking ROBERTSON'S READY MIX LTD A CALIFORNIA LIMITED PARTNERSHIP?
Confirm the authority and insurance on the Motus record for USDOT 256299. Call the company back on the phone number on file, (951) 685-4600, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC1040325 or MC181673, and ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Other trucking companies in Corona, CA →
Company details from the FMCSA Company Census File (Oct 19, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-20 10:03 UTC.