MASON BROS COMPANY INC
- 366386
- 48
- 40
- 27
Safety Rating & OOS Rates AND Licensing and Insurance
As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.
- For licensing and insurance information, visit Motus: USDOT Registration System.
- For safety rating and Out-of-Service (OOS) rates, visit SAFER.
- If you are a motor carrier looking for your Inspection Selection System (ISS) value, log in to the FMCSA Portal.
BASIC Status
(Public Passenger Carrier View)
Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending June 26, 2026
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Unsafe Driving
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Not Public Crash Indicator
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Hours-of-Service Compliance
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Vehicle Maintenance
-
Controlled Substances and Alcohol
-
Not Public Hazardous Materials Compliance
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Driver Fitness
| On-Road Performance | ||||||
|---|---|---|---|---|---|---|
| 1.72 17% | Not Public | 1.13 Less than 3 driver inspections with violations | 6.24 61% | 0 0% | Not Public | 0 0% |
| On-Road Performance Detail | ||||||
|
7
3-8 driver inspections with Unsafe Driving Violations
48
Combination Carrier
|
Not Public |
27
2
21-100 relevant driver inspections
|
14
9
11-20 relevant vehicle inspections
|
27
0
No Safety Event Grouping
|
Not Public |
27
0
21-100 relevant driver inspections
|
| Investigation Results | ||||||
| No Acute/Critical Violations Discovered | N/A | No Acute/Critical Violations Discovered | No Acute/Critical Violations Discovered | No Acute/Critical Violations Discovered | Not Public | No Acute/Critical Violations Discovered |
Select a BASIC icon above to get details, or view your Complete SMS Profile.
Denotes this carrier exceeds the FMCSA Intervention
Threshold relative to its safety event grouping based upon
roadside data and/or has been cited with one or more Acute/Critical Violations within the
past 12 months during an investigation. Therefore, this carrier may be prioritized
for an intervention action and roadside inspection.
Violation Summary
Violations: 34
| Violations | Description | # Violations | # OOS Violations | Violation Severity Weight | BASIC |
|---|---|---|---|---|---|
| 392.2-SLLFC | State/Local Laws - Following too closely | 1 | 0 | 5 | Unsafe Driving |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | 4 | 0 | 4 | Unsafe Driving |
| 392.2-SLLS4 | State/Local Laws - Speeding 15 or more miles per hour over the speed limit | 1 | 0 | 10 | Unsafe Driving |
| 392.2-SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other | 1 | 0 | 5 | Unsafe Driving |
| 392.82DUMT | Driver - Using a hand-held mobile telephone | 1 | 0 | 10 | Unsafe Driving |
| 395.22G-ELDMFV | HOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position. | 1 | 0 | 1 | HOS Compliance |
| 395.22H1-ELDNUM | HOS (ELD) - In-Vehicle Information - No user's manual for the driver describing how to operate the ELD. (May be electronic) | 1 | 0 | 1 | HOS Compliance |
| 395.24 | HOS (ELD) - ELD Form and Manner | 1 | 0 | 1 | HOS Compliance |
| 395.34A1-ELDDFN | HOS (ELD) - Driver failed to note the malfunction of the ELD and provide written notice of the malfunction to the motor carrier within 24 hours | 1 | 0 | 5 | HOS Compliance |
| 395.8E-HOSPDOOS | HOS (Property) - Driver produces a false record of duty status that concealed an HOS limitation violation after the last rest period. Explain: | 1 | 1 | 7 | HOS Compliance |
| 393.203(c) | Hood not securely fastened | 1 | 0 | 2 | Vehicle Maint. |
| 393.209E-STPSD | Steering - Power steering components loose/broken | 1 | 0 | 6 | Vehicle Maint. |
| 393.45(b)(2) | Brake hose or tubing chafing and/or kinking | 1 | 0 | 4 | Vehicle Maint. |
| 393.45B2-BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | 1 | 1 | 4 | Vehicle Maint. |
| 393.45D-BAAL | Air Brake - Audible air leak at other than a proper connection | 1 | 1 | 4 | Vehicle Maint. |
| 393.47(e) | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | 2 | 0 | 4 | Vehicle Maint. |
| 393.53(b) | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | 1 | 0 | 4 | Vehicle Maint. |
| 393.53B-B | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | 1 | 0 | 4 | Vehicle Maint. |
| 393.55D1-B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 1997 and each single unit CMV on or after 1998. | 1 | 0 | 4 | Vehicle Maint. |
| 393.55E-B | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 | 2 | 0 | 4 | Vehicle Maint. |
| 393.75A1-TFBMF | Tires - Front, belt material/casing ply showing in tread area | 1 | 1 | 8 | Vehicle Maint. |
| 393.9 | Inoperable Required Lamp | 1 | 0 | 2 | Vehicle Maint. |
| 393.9A-HLLH | Lighting - Headlamp(s) fail to operate on low and high beam | 1 | 0 | 6 | Vehicle Maint. |
| 393.9A-LHLI | Lighting - Headlamp(s) - Any inoperative | 1 | 0 | 6 | Vehicle Maint. |
| 393.9A-LIL | Lighting - Identification lamp(s) inoperative | 1 | 0 | 2 | Vehicle Maint. |
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative | 1 | 0 | 6 | Vehicle Maint. |
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | 1 | 0 | 4 | Vehicle Maint. |
| 396.3(a)1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | 1 | 1 | 0 | Vehicle Maint. |
| 396.5(b) | Oil and/or grease leak | 1 | 0 | 3 | Vehicle Maint. |
Inspection History
Total Inspections: 27
| Report | Vehicle | Measure | |||||
|---|---|---|---|---|---|---|---|
| Inspection Date | Number | State | Plate Number | Plate State | Type |
Severity Weight (SW) |
Time Weight (TiW) |
| 5/22/2026 | WI2628006046 | WI | PAW4878 | MN | TRUCK TRACTOR | 3 | |
| 396.17C-PI Operating a CMV without documentation of a periodic inspection | 4 | ||||||
| 3/26/2026 | MN0574000843 | MN | PAT7762 | MN | TRUCK TRACTOR | 3 | |
| 395.24 HOS (ELD) - ELD Form and Manner | 1 | ||||||
| 393.9A-LIL Lighting - Identification lamp(s) inoperative | 2 | ||||||
| 393.9A-LRLI Lighting - Tail lamp - Any inoperative | 6 | ||||||
| 393.55E-B Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 | 4 | ||||||
| 395.34A1-ELDDFN HOS (ELD) - Driver failed to note the malfunction of the ELD and provide written notice of the malfunction to the motor carrier within 24 hours | 5 | ||||||
| 395.8E-HOSPDOOS HOS (Property) - Driver produces a false record of duty status that concealed an HOS limitation violation after the last rest period. Explain: (OOS) | 7 + 2 (OOS) | ||||||
| 3/19/2026 | WI2918000146 | WI | PAV9615 | MN | TRUCK TRACTOR | 3 | |
| 3/5/2026 | MN0191000643 | MN | PAV9613 | MN | TRUCK TRACTOR | 3 | |
| 393.45D-BAAL Air Brake - Audible air leak at other than a proper connection (OOS) | 4 + 2 (OOS) | ||||||
| 392.2-SLLTCD State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other | 5 | ||||||
| 2/24/2026 | MN1664000872 | MN | PAW7090 | MN | TRUCK TRACTOR | 3 | |
| 2/6/2026 | MN0317000820 | MN | PAW4888 | MN | TRUCK TRACTOR | 3 | |
| 395.22G-ELDMFV HOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position. | 1 | ||||||
| 395.22H1-ELDNUM HOS (ELD) - In-Vehicle Information - No user's manual for the driver describing how to operate the ELD. (May be electronic) | 1 | ||||||
| 11/12/2025 | WI2352002080 | WI | PAS1150 | MN | TRUCK TRACTOR | 2 | |
| 392.2-SLLFC State/Local Laws - Following too closely | 5 | ||||||
| 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit | 4 | ||||||
| 10/3/2025 | MN1657001120 | MN | PAW4854 | MN | TRUCK TRACTOR | 2 | |
| 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit | 4 | ||||||
| 7/29/2025 | IA000P14WSM4 | IA | PAW1014 | MN | TRUCK TRACTOR | 2 | |
| 396.5(b) Oil and/or grease leak | 3 | ||||||
| 393.9 Inoperable Required Lamp | 2 | ||||||
| 393.53(b) CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | 4 | ||||||
| 393.45(b)(2) Brake hose or tubing chafing and/or kinking | 4 | ||||||
| 393.203(c) Hood not securely fastened | 2 | ||||||
| 393.47(e) Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | 4 | ||||||
| 7/18/2025 | SD0750001019 | SD | PAV6307 | MN | TRUCK TRACTOR | 2 | |
| 392.82DUMT Driver - Using a hand-held mobile telephone | 10 | ||||||
| 7/3/2025 | MN0155000502 | MN | PAW4802 | MN | TRUCK TRACTOR | 2 | |
| 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit | 4 | ||||||
| 6/28/2025 | MN1643000541 | MN | PAV9601 | MN | TRUCK TRACTOR | 2 | |
| 5/26/2025 | MN0150000443 | MN | PAU6441 | MN | TRUCK TRACTOR | 1 | |
| 5/22/2025 | MN1676000073 | MN | PAU6441 | MN | TRUCK TRACTOR | 1 | |
| 393.209E-STPSD Steering - Power steering components loose/broken | 6 | ||||||
| 4/17/2025 | MN0546000544 | MN | PAW4877 | MN | TRUCK TRACTOR | 1 | |
| 3/14/2025 | MN0155000365 | MN | PAU6436 | MN | TRUCK TRACTOR | 1 | |
| 393.55E-B Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 | 4 | ||||||
| 393.9A-HLLH Lighting - Headlamp(s) fail to operate on low and high beam | 6 | ||||||
| 3/12/2025 | MICAMEJ01557 | MI | PAT7789 | MN | TRUCK TRACTOR | 1 | |
| 392.2-SLLS4 State/Local Laws - Speeding 15 or more miles per hour over the speed limit | 10 | ||||||
| 3/5/2025 | MN0586000385 | MN | PAW4858 | MN | TRUCK TRACTOR | 1 | |
| 1/31/2025 | WI2734002815 | WI | PAW4878 | MN | TRUCK TRACTOR | 1 | |
| 12/27/2024 | WI2764003775 | WI | PAV8138 | MN | TRUCK TRACTOR | 1 | |
| 12/16/2024 | MN1657000494 | MN | PAT7785 | MN | TRUCK TRACTOR | 1 | |
| 393.55D1-B Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 1997 and each single unit CMV on or after 1998. | 4 | ||||||
| 393.9A-LHLI Lighting - Headlamp(s) - Any inoperative | 6 | ||||||
| 12/11/2024 | MN0546000441 | MN | PAV6307 | MN | TRUCK TRACTOR | 1 | |
| 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit | 4 | ||||||
| 12/3/2024 | WI2628005456 | WI | PAV9615 | MN | TRUCK TRACTOR | 1 | |
| 393.75A1-TFBMF Tires - Front, belt material/casing ply showing in tread area (OOS) | 8 + 2 (OOS) | ||||||
| 393.45B2-BHTD Air Brake - Hose/tubing damage into the outer reinforcement ply. (OOS) | 4 + 2 (OOS) | ||||||
| 10/17/2024 | WI2360007461 | WI | PAV6307 | MN | TRUCK TRACTOR | 1 | |
| 10/9/2024 | WI2175003211 | WI | PAT7762 | MN | TRUCK TRACTOR | 1 | |
| 396.3(a)1BOS Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination (OOS) | 0 + 2 (OOS) | ||||||
| 393.47(e) Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | 4 | ||||||
| 393.53B-B Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | 4 | ||||||
| 9/16/2024 | MN0546000353 | MN | PAV9587 | MN | TRUCK TRACTOR | 1 | |
| 7/19/2024 | MN1640000195 | MN | PAV6303 | MN | TRUCK TRACTOR | 1 | |
Reviewed-Not Preventable Crash Activity (vehicles involved in crashes)
Total Number of Crashes: 0
This carrier has no crashes to display.
Crashes Included in SMS (vehicles involved in crashes)
Total Number of Crashes: 1
| Report | Vehicle | Crash | Measure = Sum of the Total Weight (TotW) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | Number | State | Plate Number | Plate State | Fatal | Inj. | Tow. | HM |
Severity Weight (SW) |
Time
Weight (TiW) |
Total Weight (TotW) |
| 3/5/2026 | MN0260640013 | MN | PAV9613 | MN | 0 | 0 | Yes | No | 1 | 3 | 3 |
Investigation Results
Acute/Critical Violations: 0
This carrier has no Acute/Critical violations to display.
Summary of Activities
The summary includes information on the 5 most recent investigations and 24 months of inspections and crash history.
- 7/18/1990 (Safety Review)
-
27
- 11
- 16
- : 1
*Crashes listed represent a motor carrier’s involvement in reportable crashes, regardless of the carrier’s or driver’s role in the crash. Continue for details.
Continue for more Crash, Inspection & Investigation DetailsCarrier Registration
Flags
Inspection Selection System
As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.
- For licensing and insurance information, visit Motus: USDOT Registration System.
- For safety rating and Out-of-Service (OOS) rates, visit SAFER.
- If you are a motor carrier looking for your Inspection Selection System (ISS) value, log in to the FMCSA Portal.
Enforcement Cases
(Six years as of 07/17/2026 updated monthly from FMCSA )
No penalties found
Tools/Resources
SMS Methodology How to Improve Request a Data ReviewFor U.S. DOT# 366386
Complete SMS Profile Carrier History DownloadsUse of SMS Data/Information
FAST Act of 2015:
Readers should not draw conclusions about a carrier's overall safety condition simply based on the data displayed in this system. Unless a motor carrier has received an UNSATISFACTORY safety rating under part 385 of title 49, Code of Federal Regulations, or has otherwise been ordered to discontinue operations by the Federal Motor Carrier Safety Administration, it is authorized to operate on the Nation's roadways.
Safety Measurement System:
The data in the Safety Measurement System (SMS) is performance data used by the
Agency and Enforcement Community. A
symbol, based on that data, indicates that FMCSA may prioritize a motor carrier
for further monitoring.
The
symbol is not intended to imply any federal safety rating of the carrier pursuant
to 49 USC 31144. Readers should not draw conclusions about a carrier's overall safety
condition simply based on the data displayed in this system. Unless a motor carrier
in the SMS has received an UNSATISFACTORY safety rating pursuant to 49 CFR Part
385, or has otherwise been ordered to discontinue operations by the FMCSA, it is
authorized to operate on the nation's roadways.
Motor carrier safety ratings are available at http://safer.fmcsa.dot.gov and motor carrier licensing and insurance status are available at http://li-public.fmcsa.dot.gov/.