General Insulation Company
USDOT 342467 · MC-936334 · Medford, Massachusetts · Interstate for-hire carrier · 100–249 power units
General Insulation Company is a corporation based in Medford, Massachusetts, registered with the FMCSA as an interstate carrier (authorized for hire). It reports 121 power units and 126 drivers, which ranks it #56 by fleet size among 129 active for-hire carriers with 50+ power units headquartered in Massachusetts. In the 24 months to Sep 24, 2026 its trucks were inspected 220 times – about 1.8 inspections per power unit. 7.1% of vehicle inspections and 4.5% of driver inspections ended with an out-of-service order, against 18.8% and 2.6% for carriers of the same size nationally. FMCSA records 4 reportable crashes in the last 24 months (2 injuries, 0 fatalities, 4 tow-away), or 3.3 per 100 power units versus 4.5 for its size band. Crash counts in FMCSA data do not indicate fault. Its registered cargo types are general freight, metal: sheets, coils, rolls, logs, poles, beams, lumber, building materials, construction.
Is this your company?
Claim the General Insulation Company profile to add a verified badge, your logo, website, service area, lanes, equipment photos and a direct quote-request contact. Featured carriers are shown first on the Medford and Massachusetts pages. Government data on this page is never changed – your additions are shown in a separate, clearly labeled section.
Claim this profile – from $29 Get the Massachusetts carrier list (CSV)
Registration and contact
| Legal name | General Insulation Company |
|---|---|
| DBA name | — |
| USDOT number | 342467 |
| Operating authority (docket) | MC-936334 |
| Entity type | Authorized for Hire |
| Operation | Interstate |
| Business type | Corporation |
| Physical address | 278 Mystic Ave Ste 209, Medford, MA 02155 |
| Phone | (781) 391-2070 |
| First registered | Feb 1, 1989 |
| Last MCS-150 update | Mar 20, 2026 |
| Hazmat carrier | No |
Check live authority, insurance and out-of-service status: FMCSA SAFER snapshot for USDOT 342467.
Fleet and drivers
| Equipment | Owned | Term-leased | Trip-leased |
|---|---|---|---|
| Straight trucks | 0 | 120 | 0 |
| Truck tractors | 0 | 1 | 0 |
| Trailers | 0 | 0 | 0 |
- 1.04 drivers per power unit (national median for 50+ unit fleets: 0.99).
- 5,005,000 miles reported for 2025 – about 41,364 miles per power unit vs a 41,613 median for 100–249-unit fleets.
- 0% of listed equipment is owned rather than leased.
- 0 CDL drivers; 0 drivers operate interstate beyond 100 miles, 40 within 100 miles.
Safety record
Roadside inspections Sep 25, 2024 – Sep 24, 2026; crashes Nov 1, 2024 – Oct 31, 2026. Benchmarks: 100–249-unit for-hire carriers nationally (2,611) and Massachusetts carriers with 50+ units (129).
| Measure | General Insulation Company | Same size, US | MA average | |
|---|---|---|---|---|
| Vehicle out-of-service rate | 7.1% | 18.8% | 13.0% | 62% lower than average |
| Driver out-of-service rate | 4.5% | 2.6% | 1.7% | 74% higher than average |
| Crashes per 100 power units | 3.3 | 4.5 | 0.8 | 26% lower than average |
| Inspections | 220 | 220 with a driver check, 140 with a vehicle check, 98 BASIC violations recorded | ||
| FMCSA safety rating | Conditional (rated Sep 17, 1995) | |||
Cargo carried
Similar carriers in Massachusetts
Closest fleet size and cargo mix among Massachusetts carriers in this directory.
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| K5 Corporation USDOT 686789 | Rockland | 116 | 100 | 20 | 25.0% | 3 |
| Intransit Container LLC USDOT 536660 | Worcester | 115 | 115 | 74 | 57.8% | 7 |
| Regency Transportation Inc USDOT 279538 | Franklin | 114 | 123 | 90 | 22.4% | 8 |
| Lei Corporation USDOT 1943283 | Boylston | 86 | 76 | 29 | 33.3% | 1 |
| Brown Bear Transportation LLC USDOT 2917532 | Springfield | 141 | 142 | 164 | 21.6% | 10 |
| Joseph S Rae LLC USDOT 2007149 | Charlemont | 87 | 75 | 20 | 12.5% | 3 |
Other carriers near Medford
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| Iron Mountain Information Management Services Inc USDOT 338113 | Boston | 2,404 | 2,716 | 1,447 | 5.9% | 36 |
| Triumvirate Environmental LLC USDOT 361305 | Somerville | 320 | 237 | 247 | 13.4% | 3 |
| Capitol Waste Services Inc USDOT 1114943 | East Boston | 241 | 175 | 20 | 53.8% | 2 |
Browse
FAQ
What is the USDOT number of General Insulation Company?
General Insulation Company is registered with USDOT number 342467 and operating authority MC-936334.
How many trucks does General Insulation Company have?
It reports 121 power units (1 tractors, 120 straight trucks) and 0 trailers, with 126 drivers, on its last MCS-150 update (Mar 20, 2026).
Where is General Insulation Company located?
Its registered physical address is in Medford, Massachusetts 02155.
What is the out-of-service rate of General Insulation Company?
Over 24 months, 7.1% of vehicle inspections and 4.5% of driver inspections resulted in an out-of-service order (same-size national average: 18.8% vehicle, 2.6% driver).
Source: FMCSA Company Census File, SMS inspection file and Crash File (data.transportation.gov), refreshed 2026-11-04. Figures are as reported to FMCSA and may lag. How we calculate these numbers. Spotted an error? Carriers update their record with FMCSA via the MCS-150 form; see corrections.