Robertson'S Ready Mix Ltd (DOT# 256299 · MC# 1040325) – FMCSA Carrier Profile

DOT# 256299MC# 1040325● Active
Updated monthly · 2026-03-09

This carrier is active with a Satisfactory safety rating.

Robertson'S Ready Mix Ltd is a registered motor carrier with the FMCSA under USDOT number 256299. The company operates from Corona, CA and maintains an active operating status with 1,239 power units and 1,239 drivers on record.

Safety Rating

FMCSA Safety Rating
Satisfactory
Rated: February 1, 1989

Robertson'S Ready Mix Ltd holds a "Satisfactory" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that the carrier has been found to comply with federal safety regulations based on the most recent compliance review conducted by FMCSA. View official FMCSA record →

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Company Information

Address200 S Main St #200, Corona, CA, 92882
Phone(951) 685-4600
Entity TypePrivate Property
OperationInterstate
Power Units1,239(Large carrier)
Drivers1,239
MCS-150 FiledJuly 22, 2025
Annual Mileage30,836,278 mi (2024)
All carriers in CaliforniaCarriers in Corona, CA

Inspection Summary

All-time Inspections
All-time
186
Total
29
OOS
5
Driver OOS
24
Vehicle OOS
186 inspections indicates a high-volume, actively operating carrier.
OOS Rate15.59%
The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service. 15.6% — approaching the national vehicle OOS average of ~21%.

Crash History

Crash Records
All-time
25
Total
0
Fatal
12
Injuries
0
Tow-Away
25 crashes reported. Review fatal and injury counts carefully alongside fleet size before engaging this carrier.

BASICS Safety Scores

BASICS Scores
Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories
0.1
Unsafe Driving
Measures violations related to speeding, reckless driving, and improper lane changes.
0.0
HOS Compliance
Tracks hours-of-service violations, including driving beyond legal limits without rest.
0.1
Driver Fitness
Reflects issues with driver qualifications, licenses, and medical certifications.
0.0
Controlled Substances
Captures drug and alcohol violations, including failed or refused tests.
2.4
Vehicle Maintenance
Reflects brake, tire, lighting, and other equipment-related inspection violations.
Scores above 65 (general freight) or 50 (passenger/hazmat) trigger an FMCSA Alert. Higher scores indicate more safety risk. National median is approximately 20–30 for active carriers.
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Carrier Insight

Robertson'S Ready Mix Ltd is a large motor carrier operating in California. With 186 total inspections on record, the carrier has an out-of-service rate of 15.6%, which is below the national average of approximately 21%. 25 crashes have been reported. Review crash details alongside fleet size and inspection history before making hiring decisions.

A Satisfactory rating from the FMCSA indicates that Robertson'S Ready Mix Ltd meets federal safety standards based on the most recent compliance review. This is the highest rating a carrier can receive.

The company operates 1,239 power units and employs 1,239 drivers. This fleet size places it among the larger carriers in the FMCSA registry.

Frequently Asked Questions

What is USDOT Number 256299?
USDOT number 256299 is assigned to Robertson'S Ready Mix Ltd, an active motor carrier registered with the FMCSA, based in Corona, CA.
What is the safety rating of Robertson'S Ready Mix Ltd?
Robertson'S Ready Mix Ltd has a safety rating of Satisfactory as of February 1, 1989.
How many inspections has Robertson'S Ready Mix Ltd had?
Robertson'S Ready Mix Ltd has recorded 186 total inspections with 29 out-of-service orders, representing an OOS rate of 15.59%.
Where is Robertson'S Ready Mix Ltd located?
Robertson'S Ready Mix Ltd is headquartered at 200 S Main St #200, Corona, CA 92882.
What does "Not Rated" mean?
"Not Rated" means the FMCSA has not conducted a formal compliance review for this carrier. It does not indicate a safety problem — many active carriers operate without a formal rating.
Is zero crashes always a good sign?
Generally yes, but context matters. A carrier with zero crashes and very few inspections may simply have limited road exposure. Always review crash data alongside inspection volume and fleet size.
What is a normal OOS rate?
The national average vehicle out-of-service rate is approximately 21%. Driver OOS averages around 5%. Rates significantly above these thresholds may indicate recurring compliance issues.
How often is FMCSA data updated?
FMCSA publishes updated carrier data monthly. This page reflects the most recent available snapshot, updated on the date shown above.
What is the MC number for Robertson'S Ready Mix Ltd?
The MC number for Robertson'S Ready Mix Ltd is MC# 1040325. The MC number is issued by the FMCSA and authorizes carriers to operate in interstate commerce.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 256299 · Last updated: 2026-03-09. View official FMCSA record →