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H I STONE & SON INC
Southbury, CT
CarrierChk vetting signal
Review recommended
Elevated Out-of-Service Rate
26.7% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 78% of carriers with a comparable number of inspections. Drivers were put out of service on 15.8% of 19 driver inspections — higher than 85% of carriers with a comparable number of driver inspections (national average 5.5%). This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
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FMCSA status: Active & Authorized · DOT 496152 · MC 462647
Satisfactory
Active 16 yrs, 4 mo
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-462647 · Common carrier
Insurance
On File
National Union Fire Ins. Co. Of Pitsbgh. Pa
Safety
Satisfactory
26.7% OOS · 55 inspections on record
Flags · 1
Elevated Out-of-Service Rate
26.7% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 78% of carriers with a comparable number of inspections. Drivers were put out of service on 15.8% of 19 driver inspections — higher than 85% of carriers with a comparable number of driver inspections (national average 5.5%). This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
Vetting notes
- Operating authority active for 16 yrs, 4 mo
- Insurance on file: $2,000,000
- FMCSA safety rating: Satisfactory
- Driver out-of-service rate 15.8% — above the 5.5% national average
- Vehicle out-of-service rate 41.2% — above the 20.7% national average
- 55 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC462647
Common Carrier
Insurance on File
NATIONAL UNION FIRE INS. CO. OF PITSBGH. PA
BI&PD · $2,000,000 · Policy 2446775
Required Filings
Liability (BIPD)
$2,000,000
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
496152
MC Number
MC-462647
Safety Rating
Satisfactory
Entity Type
Corporation
Operation Classification
Authorized for hire
MCS-150 Filed
February 13, 2025
FMCSA Registration
August 27, 1992
Authority Granted
May 14, 2010
Annual Mileage
2,324,734 mi (2024)
Contact Information
Address
313 Main Street North, Southbury, CT 06488
Phone
Email
Owner / Officer
Harry H Stone
Officer 2
Stephanie M. Donovan
Cargo Types
General FreightLogs/Poles/BeamsBuilding MaterialsMachinery/Large ObjectsLiquids/GasesCoal/CokeConstruction MaterialsGarbage/RefuseOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
55
Driver Inspections
33
Vehicle Inspections
30
Out-of-Service Violations
24
Violations by Category
Vehicle Maintenance68
Unsafe Driving20
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate15.8% · national avg 5.5%
⚠ Above national average (10.3pp higher)
Vehicle OOS Rate41.2% · national avg 20.7%
⚠ Above national average (20.5pp higher)
26.7% of 30 inspections in the last 24 months put a driver or vehicle out of service —
78th percentile among carriers with 25–99 inspections (lower is better).
CarrierChk calculation from FMCSA roadside inspection records, not an FMCSA score.
Inspection Trend by Year
2026
2025
2024
Violation Rate by Category
Share of roadside inspections in FMCSA's rolling 24-month window that found a violation in each category. The individual violations are listed under each inspection in Inspection Details below. None of this is the basis of the safety rating, which comes from an on-site compliance review.
Vehicle Maintenance
9 of 18 inspections
Unsafe Driving
10 of 32 inspections
Hours of Service
0 of 32 inspections
Driver Fitness
3 of 32 inspections
Controlled Substances
0 of 32 inspections
Crash History (4)
Crashes reported to FMCSA in the last 24 months. A crash appearing here is a reported event, not a finding of fault.
4
Crashes
0
Fatalities
1
Injuries
4
Tow-aways
| Date | State | Fatal | Injured | Tow | Conditions |
|---|---|---|---|---|---|
| January 22, 2026 | CT | — | — | Yes | No Adverse Conditions · Daylight · Dry |
| December 26, 2025 | CT | — | 1 | Yes | No Adverse Conditions · Dawn · Dry |
| December 4, 2025 | CT | — | — | Yes | No Adverse Conditions · Dawn · Dry |
| July 3, 2025 | CT | — | — | Yes | No Adverse Conditions · Daylight · Dry |
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
CT34
NY5
MA4
NJ1
Fleet & Equipment (42)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~26
of 61 reported to FMCSA
Trailers
~16
seen at inspection
Equipment types observed
Tractor
17
Semi-trailer
8
Truck
8
Tank
6
Dump
1
Pickup
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| Acro | Semi-trailer | 1A911422161005030 | 6 | 2 |
| 2021 Mack Pinnacle | Tractor · Class 8 | 1M1PN4GY1MM007279 | 4 | 2 |
| 2024 Kenworth T680 | Tractor · Class 8 | 1XKYDP9X2RJ308993 | 4 | — |
| Unpublishe | Semi-trailer | 3S9A6BU27MP104164 | 4 | — |
| 2022 Mac | Tank · Class 8 | 558MRA325NK006962 | 4 | 1 |
| 2004 Heil Trailer International | Tank · 45 ft | 5HTNA452045F14961 | 4 | 1 |
| 2016 Mack CXU (Pinnacle) | Tractor · Class 8 | 1M1AW09Y5GM077560 | 3 | 1 |
| 2023 Mack Granite | Truck · Class 8 | 1M2GR4GC7PM035631 | 3 | — |
| 2025 International LT62F | Tractor · Class 8 | 3HSDZSZR5SN494006 | 3 | — |
| 2020 Mack Pinnacle | Tractor · Class 8 | 1M1PN4GY6LM005199 | 2 | — |
Show all 42 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2024 Mack Pinnacle | Tractor · Class 8 | 1M1PN4GY8RM014351 | 2 | 1 |
| 2021 Mack Pinnacle | Tractor · Class 8 | 1M1PN4GYXMM007278 | 2 | 1 |
| 2017 Kenworth T880 | Truck · Class 8 | 1NKZXPEX1HJ174892 | 2 | 2 |
| Aldur | Semi-trailer | 3S9A6BV27RP104249 | 2 | 1 |
| Acro | Semi-trailer | 1A911422061005035 | 1 | — |
| 2022 Chevrolet Silverado HD | Pickup · Class 3 | 1GC4YUEY6NF280253 | 1 | 1 |
| Heil | — | 1HLN3A7BXR7E57757 | 1 | — |
| 2009 International MA035 | Truck · Class 7 | 1HTMKAAN29H135395 | 1 | 1 |
| Custo | Semi-trailer | 1L9PU1726FG423384 | 1 | 1 |
| 2017 Mack CHU (Pinnacle) | Tractor · Class 8 | 1M1AN07Y2HM026234 | 1 | — |
| 2017 Mack CHU (Pinnacle) | Tractor · Class 8 | 1M1AN07Y6HM025345 | 1 | — |
| 2017 Mack CHU (Pinnacle) | Tractor · Class 8 | 1M1AN09Y1HM026111 | 1 | — |
| 2016 Mack CXU (Pinnacle) | Tractor · Class 8 | 1M1AW07Y4GM079321 | 1 | — |
| 2016 Mack CXU (Pinnacle) | Tractor · Class 8 | 1M1AW09Y2GM077564 | 1 | — |
| 2020 Mack Pinnacle | Tractor · Class 8 | 1M1PN4GY4LM007064 | 1 | — |
| 2019 Mack Pinnacle | Tractor · Class 8 | 1M1PN4GY5KM003510 | 1 | — |
| 2023 Mack Granite | Truck · Class 8 | 1M2GR4GC0PM036216 | 1 | — |
| 2020 Mack Granite | Truck · Class 8 | 1M2GR4GC2LM013515 | 1 | — |
| 2020 Mack Granite | Truck · Class 8 | 1M2GR4GC4LM018618 | 1 | — |
| 2015 Kenworth T880 | Truck · Class 8 | 1NKZXP0XXFJ464553 | 1 | — |
| 2015 Kenworth T680 | Tractor · Class 8 | 1XKYDP9X3FJ464469 | 1 | — |
| 2014 Kenworth T680 | Tractor · Class 8 | 1XKYDP9X9EJ365394 | 1 | — |
| Ptrt | Semi-trailer | 1Z9ST4237BB337038 | 1 | — |
| 2025 Exa Industrial | Tank · 45 ft | 3E9H345HXST034114 | 1 | — |
| 2025 International LT62F | Tractor · Class 8 | 3HSDZSZR0SN493667 | 1 | — |
| Aldur | Semi-trailer | 3S9A6BU28MP104139 | 1 | — |
| Ald | Semi-trailer | 3S9A6BV23RP104250 | 1 | — |
| 2022 Mac | Tank · Class 8 | 558MRA323NK006961 | 1 | — |
| 2025 Mac | Tank · Class 8 | 558MRA32XSK008959 | 1 | — |
| 2017 Mac | Tank · 42 ft | 558MRAM25HK003336 | 1 | — |
| 2010 Mac Trailer Manufacturing | Dump · 32 ft | 5MADA3223AC017205 | 1 | — |
| 2007 Hino Conventional Type Truck | Truck · Class 6 | 5PVNJ8JV572S51008 | 1 | 1 |
A vehicle appearing here was recorded in an inspection — it is not proof the carrier still operates it today.
Inspection Details
Each roadside inspection with its violations
Inspection Records (55)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| August 28, 2026 | DE00002346 | MA, MA | III | 4 | — | — | Straight Truck Straight Truck |
INTL INTL |
3HTPCSZT1SN459064 3HTPCSZT1SN459064 |
CT 79858A CT 79858A |
| 392.2-SLLEWG3 | State/Local Laws - Excessive weight - More than 5000 lbs over on allowable gross weight | |||||||||
| 392.2-SLLEWG3 | State/Local Laws - Excessive weight - More than 5000 lbs over on allowable gross weight | |||||||||
| 392.2WG | State/Local Laws - Excessive Weight Violations | |||||||||
| 392.2WG | State/Local Laws - Excessive Weight Violations | |||||||||
| August 22, 2026 | SPQFI05242 | NJ, NJ | III | 1 | — | — | Truck Tractor Semi-trailer |
INTERNATIONAL MAC TRAILER MANUFACTURING |
3HSDZSZR5SN494006 5MADA3223AC017205 |
CT 78835A CT AX30046 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| August 17, 2026 | SPG3091092 | SCHODACK LANDING NY | III | — | — | — | Truck Tractor Semi-trailer |
KENWORTH UNPUBLISHE |
1XKYDP9X2RJ308993 3S9A6BU27MP104164 |
CT 75090A CT AX30045 |
| July 10, 2026 | 3064001815 | CT, CT | I | 8 | 2 | H I STONE & SON INC | Straight Truck Semi-trailer |
CHEVROLET CUSTO |
1GC4YUEY6NF280253 1L9PU1726FG423384 |
CT AP31600 CT AB29069 |
| 392.9A2-C | OOSCargo - Vehicle components or dunnage not secured | General Securement | ||||||||
| 393.43DBMA | OOSBrake - Breakaway not attached to the towing vehicle | Brakes All Others | ||||||||
| 392.2-SLL | State/Local Laws - | |||||||||
| 392.8-D | Driver - Failed to inspect /use emergency equipment | Emergency Equipment | ||||||||
| 392.2-SLLSIV | State/Local Laws - State insurance violation | |||||||||
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | Inspection Reports | ||||||||
| 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Emergency Equipment | ||||||||
| 393.60D | Windshield / Windows - Tinting permits less than 70% of light transmittance | Windshield/ Glass/ Markings | ||||||||
| July 9, 2026 | 3019007286 | CT, CT | III | 1 | — | CARRIER | Straight Truck |
MACK |
1M2GR4GC0PM036216 |
CT 37480A |
| 392.16-D | Driver - Failed to use seat belt while operating a CMV | Seat Belt | ||||||||
| June 9, 2026 | 3064001777 | CT, CT | I | 6 | 1 | CHADWICK LAKE FILTRATION PLANT | Truck Tractor Semi-trailer |
MACK ALDUR |
1M1PN4GY1MM007279 3S9A6BV27RP104249 |
CT 67331A CT BN96541 |
| 393.75A3-TAOL | OOSTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Tires | ||||||||
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| 392.2-SLLEWG2 | State/Local Laws - Excessive weight - 2501-5000 lbs over on allowable gross weight | |||||||||
| 393.11A1-CSLRR | Conspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997 | Reflective Sheeting | ||||||||
| 393.45B2-B-VAC | Brake - Vacuum hose(s) or line(s) restricted/abraded/chafed through outer cover-to-cord ply crimped/cracked/broken | Brakes All Others | ||||||||
| 393.45B2-B-VAC | Brake - Vacuum hose(s) or line(s) restricted/abraded/chafed through outer cover-to-cord ply crimped/cracked/broken | Brakes All Others | ||||||||
| May 20, 2026 | 3090005135 | GREENWICH SCALE, CT | I | — | — | NA | Truck Tractor Semi-trailer |
MACK ACRO |
1M1PN4GYXMM007278 1A911422161005030 |
CT 67332A CT AE44859 |
| February 24, 2026 | D102601303 | CASTLETON-ON-HUDSON NY | II | — | — | — | Truck Tractor Semi-trailer |
KENWORTH UNPUBLISHE |
1XKYDP9X2RJ308993 3S9A6BU27MP104164 |
CT 75090A CT AX30045 |
| January 23, 2026 | 3072001026 | WATERFORD, CT | III | 1 | — | GROTON WWTP | Straight Truck Semi-trailer |
MACK ALDUR |
1M1PN4GY1MM007279 3S9A6BV27RP104249 |
CT 67331A CT BN96541 |
| 392.2-SLLS4 | State/Local Laws - Speeding 15 or more miles per hour over the speed limit | Speeding 4 | ||||||||
| January 21, 2026 | 3011002055 | NORWICH, CT | III | 1 | — | H I STONE | Truck Tractor Semi-trailer |
INTERNATIONAL MAC |
3HSDZSZR5SN494006 558MRA325NK006962 |
CT 78835A CT BE29196 |
| 392.2-SLLML | State/Local Laws - Failure to maintain lane | Dangerous Driving | ||||||||
Shippers Seen at Inspections
Shipper names recorded by roadside inspectors over roughly the last three years. Only inspected loads appear, so this is a sample of who the carrier hauls for, not a complete customer list. Names are as entered at the roadside; blanks and placeholders such as “N/A” or “same as carrier” are left out.
| Shipper | Inspections | Most recent |
|---|---|---|
| CHADWICK LAKE FILTRATION PLANT | 1 | June 9, 2026 |
| GROTON WWTP | 1 | January 23, 2026 |
| PAWLING WWTP | 1 | December 29, 2025 |
| MONTVILLE WPCA | 1 | August 11, 2025 |
| VEOLIA WWTP | 1 | August 15, 2024 |
| CITY OF DANBURY | 1 | July 22, 2024 |
| VEOLIA | 1 | July 10, 2024 |
| JDG | 1 | December 13, 2023 |
| STRATFORD WWTP | 1 | November 16, 2023 |
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| May 14, 2010 | GRANTED | Common Carrier |
| July 28, 2003 | DISMISSED | Common Carrier |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| June 1, 2024 | BI&PD Primary/Excess | On file |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: October 12, 2026.
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