A-1 Insulating Co Inc

Active

USDOT 436249InterstatePRIVATE PROPERTYOperating since Feb 1991MCS-150 last updated 2 yrs agoUpdated Apr 21, 2026

Call Message

Standard safety record

A-1 Insulating Co Inc is an active interstate carrier based in Rainbow City, AL.

Not Rated

No FMCSA Compliance Review on file.

0.0%

OOS Rate · below 21% national

BASIC Alerts · of 5 categories

Crashes · last 24 months

0Power Units10 drivers

0Total Drivers10 CDL

0Inspectionslast 24 months

0Violations2.5 per inspection

0%OOS Ratevs 21% national avg

0Crasheslast 24 months

Company Details

Phone: (256) 546-7575
Email: david.s.wrenn@gmail.com
Address: 104 Rainbow Industrial Blvd
Rainbow City, AL 35906
Officers: David Wrenn· Corporation

Operation: Interstate
Classification: Private Property
Cargo: Building Materials
Hazmat: No
Drivers: 10(10 CDL)
Mileage: 200000 mi (2022)
MCS-150 Updated: Oct 19, 2023
Safety Rating: None
DUNS: 836193045

Insurance

No insurance filings on record.

View on FMCSA L&I

Carrier Profile

Annual mileage: 200,000 mi(2022)
Fleet: 10 power units· 10 trucks
Drivers: 10 drivers(10 CDL · 10 interstate)

D&B number: 836193045
Fax: 2565475237

Fleet Details

Vehicle Type	Owned	Term Leased	Trip Leased
Straight Trucks	10	0	0
Total Power Units	10

Equipment Observed

Last seen Dec 11, 2025

Distinct vehicles · 24 mo

vs 10 self-reported (MCS-150)

Top makes

HINO2

Registered in

BASIC Analysis

Higher values = more violations. 0 = clean record.

Category	Insp w/ Viol

How this carrier compares

Cohort: AL · All carriers

Category	vs. Cohort	vs. State	Reading
Unsafe Driving	0%	0%	Better than most peers
HOS Compliance	0%	0%	Better than most peers
Driver Fitness	0%	0%	Better than most peers
Controlled Substances	0%	0%	Better than most peers
Vehicle Maintenance	57%	82%	Around peer average

Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.

FMCSA Registry Timeline

First registered: Feb 1991· 35 years ago
Last MCS-150 self-update: Oct 2023· 2 years agoStale
Authority status: Active

Inspections (24 months)

Last inspection: Dec 11, 2025 · 7 months ago

Type	OOS %	Nat'l Avg
Driver	—	6.67%
Vehicle	—	22.26%
Hazmat	—	4.44%

Where they run

Inspected in 3 states. Top state GA accounts for 33% of activity. Activity outside home state (AL): 100%.

Accident Reports (24 months)

Period	Fatalities	Injuries	Tow-away	Total
Jul 1, 2025	0	0	1	1

Violation Details

Most-cited violation codes

3922SLLMFState/Local Laws - Wheel (mud) flaps missing or defective1x
39330BBattery - Not protected1x
39395A4EEUSEmergency Equipment - Fire Extinguishers - unsecured1x
3939ALCLLighting - Clearance lamp(s) inoperative1x
3939ALILLighting - Identification lamp(s) inoperative1x

BASIC Category	Total	Severe	OOS
Vehicle Maintenance	5	0	0

Recent activity · last 3 inspections, 5 violationsShow details

Recent Inspections

Date	State	Vehicle	Violations
Dec 11, 2025	LA	STRAIGHT TRUCK	0
Sep 18, 2025	MS	STRAIGHT TRUCK	0
Jul 29, 2024	GA	STRAIGHT TRUCK	5

Recent Violations

Date	Code	Description

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Try DataTruck — AI-Native TMS

Unsafe Driving	0	0.00	—
HOS Compliance	0	0.00	—
Vehicle Maintenance	1	1.66	—
Driver Fitness	0	0.00	—
Controlled Substances	0	0.00	—

Jul 29, 2024	3922SLLMF	State/Local Laws - Wheel (mud) flaps missing or defective	Vehicle Maintenance	—
Jul 29, 2024	39330B	Battery - Not protected	Vehicle Maintenance	—
Jul 29, 2024	39395A4EEUS	Emergency Equipment - Fire Extinguishers - unsecured	Vehicle Maintenance	—
Jul 29, 2024	3939ALCL	Lighting - Clearance lamp(s) inoperative	Vehicle Maintenance	—
Jul 29, 2024	3939ALIL	Lighting - Identification lamp(s) inoperative	Vehicle Maintenance	—