H I STONE & SON INC
- 496152
-
313 MAIN STREET NORTH
SOUTHBURY, CT 06488 - 61
- 63
- 37
Safety Rating & OOS Rates
(As of 03/17/2026 updated daily from SAFER )
Out of Service Rates
| Type | OOS % | National Avg % |
|---|---|---|
| Vehicle | 33.3 | 23.2 |
| Driver | 13.9 | 6.4 |
| Hazmat | 4.4 |
Licensing and Insurance
(As of 03/17/2026 updated hourly from L&I )
| Type | Yes/No | MC#/MX# |
|---|---|---|
| Property | Yes | MC-462647 |
| Passenger | No | |
| Household Goods | No | |
| Broker | No |
BASIC Status
(Public Property Carrier View)
Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending February 27, 2026
-
Unsafe Driving
-
Not Public Crash Indicator
-
Hours-of-Service Compliance
-
Vehicle Maintenance
-
Controlled Substances and Alcohol
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Not Public Hazardous Materials Compliance
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Driver Fitness
Select a BASIC icon above to get details, or view your Complete SMS Profile.
Vehicle Maintenance
On-Road Performance
9.31
Safety Event Group: 21-100 relevant vehicle inspections
Investigation Results
No Acute/Critical Violations Discovered
Carrier Measure Over Time
- Trends
This graph displays a carrier’s measure based on 24 months of on-road performance. Zero indicates the best performance. To see how the measure is calculated click here. To see how the measure relates to percentile click here. Expand for more information.
- 12
- 9
- 6
- 3
- 0
- -3
- Sep 26
- Oct 31
- Nov 28
- Dec 26
- Jan 30
- Feb 27
- 2025
- 2025
- 2025
- 2025
- 2026
- 2026
| Sep 26 2025 | Oct 31 2025 | Nov 28 2025 | Dec 26 2025 | Jan 30 2026 | Feb 27 2026 | |
|---|---|---|---|---|---|---|
| Measure | 8.59 | 7.95 | 7.81 | 8.40 | 9.37 | 9.31 |
| Measure | 0 | 0 | 0 | 0 | 0 | 0 |
Violation Summary
Vehicle Maint. Violations: 44
| Violations | Description | # Violations | # OOS Violations | Violation Severity Weight |
|---|---|---|---|---|
| 393.9A-LLPL | Lighting - License plate lamp inoperative. | 3 | 0 | 2 |
| 393.55(e) | No or Defective ABS Malfunction Indicator Lamp for trailer manufactured after 03/01/1998 | 2 | 0 | 4 |
| 393.78 | Wipers - Inoperative / missing / damaged wipers. | 2 | 0 | 1 |
| 393.95(f) | Emergency Equipment - Stopped vehicle warning devices missing or improper. | 2 | 0 | 2 |
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative. | 2 | 0 | 6 |
| 393.9A-LSML | Lighting - Side marker lamp(s) inoperative. | 2 | 0 | 2 |
| 396.3(a)1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination. | 2 | 2 | 0 |
| 396.3A1-BALAC | Brake - Audible air leak from a brake chamber | 2 | 0 | 4 |
| 392.9A2-C | Cargo - Vehicle components or dunnage not secured. | 1 | 1 | 1 |
| 393.134B-CRHLC | Roll-on/Roll-off/Hook Lift Containers - Improper securement of a roll-on/roll-off and hook lift container. | 1 | 1 | 7 |
| 393.209E-SPSLA | Steering - Power steering leaking anywhere. | 1 | 0 | 6 |
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured. | 1 | 0 | 4 |
| 393.45B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | 1 | 1 | 4 |
| 393.47(e) | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | 1 | 0 | 4 |
| 393.48(a) | Inoperative/defective brakes | 1 | 0 | 4 |
| 393.48A-BIBD | Drum Brake - Inoperative other than a steering axle. | 1 | 0 | 4 |
| 393.48A-BMBCBD | Drum Brake - Missing/broken component(s). | 1 | 0 | 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. | 1 | 0 | 4 |
| 393.55(c)(2) | CMV other than truck-tractor manufactured on or after March 1, 1998 not equipped with an antilock brake system. | 1 | 0 | 4 |
| 393.55E-B | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998. | 1 | 0 | 4 |
| 393.75(a) | Flat tire or fabric exposed | 1 | 1 | 8 |
| 393.75G-TAOW | Tires - All others, weight carried exceeds tire load limit. | 1 | 1 | 3 |
| 393.9 | Inoperable Required Lamp | 1 | 0 | 2 |
| 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | 1 | 0 | 2 |
| 393.95A4-EEUS | Emergency Equipment - Fire Extinguishers - unsecured. | 1 | 0 | 2 |
| 393.9A-LCL | Lighting - Clearance lamp(s) inoperative. | 1 | 0 | 2 |
| 393.9A-LFTSI | Lighting - Front - Turn signal - inoperative. | 1 | 0 | 6 |
| 393.9A-LIL | Lighting - Identification lamp(s) inoperative. | 1 | 0 | 2 |
| 393.9A-LSLI | Lighting - Stop lamps - Any inoperative. | 1 | 0 | 6 |
| 393.9A-LTSI | Lighting - Turn signal - Any inoperative on the rearmost vehicle. | 1 | 1 | 6 |
| 393.9B-LRLIWR | Lighting - Tail lamp - Both lamps on rearmost vehicle inoperative when required to be on. | 1 | 1 | 6 |
| 396.3A1-BALR | Air Brake - Fails air loss rate test. | 1 | 1 | 4 |
| 396.3A1-TAOCV | Tires - All others, in contact with a part of the vehicle. | 1 | 1 | 8 |
| 396.3A1B | Brakes (general) Explain: | 1 | 1 | 4 |
| 396.9D2-FTF | Failing to correct the violation(s)/defect(s) noted on the roadside inspection report. | 1 | 0 | 4 |
Inspection History
Vehicle Inspections: 21
Please select to view your Inspection History. You can also sort your data by Date, Report Number, Vehicle Type, etc.
| Report | Vehicle | Measure = Sum of the Total Weight (TotW) Sum of the Time Weight (TiW) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inspection Date | Number | State | Plate Number | Plate State | Type |
Severity Weight (SW) |
Time Weight (TiW) |
Total Weight (TotW) |
||
| Sum of measure weights | Sum of measure weights | 167 | 32 | 298 | ||||||
*** The sum of all violation severity weights (violation weight + out-of-service) for this inspection has been capped at 30.
Investigation Results
Vehicle Maint. Acute/Critical Violations: 0
This carrier has no Vehicle Maintenance 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.
- 1/9/2024 (Non-Ratable Review)
-
37
- 13
- 24
- : 2
*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
Carrier Registration Details Subject to General Threshold Update Registration InfoEnforcement Cases
(Six years as of 03/17/2026 updated monthly from FMCSA )
No penalties found
Tools/Resources
SMS Methodology How to Improve Request a Data ReviewFor U.S. DOT# 496152
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/.