Safety Measurement System - Complete SMS Profile (U.S. DOT# 182420)

PORTER WARNER INDUSTRIES LLC

U.S. DOT#: 182420

Address: 2 E 38TH ST
CHATTANOOGA, TN 37410-1423
Number of Vehicles: 8
Number of Drivers: 9
Number of Inspections: 10

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 Property Carrier View)

Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending May 15, 2026

On-Road Performance
0.64 Measure	Not Public	0 Measure	3.86 Measure	0 Measure	Not Public	0 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 2 Safety Event Group: No Safety Event Grouping Avg. PU × UF: 21.8 Segment: Straight Carrier	Not Public	Driver Inspections: 10 with HOS Compliance Violations: 0 Safety Event Group: 3-10 relevant driver inspections	Vehicle Inspections: 7 with Vehicle Maint. Violations: 3 Safety Event Group: 5-10 relevant vehicle inspections	Driver Inspections: 10 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 10 with Driver Fitness Violations: 0 Safety Event Group: 5-10 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.

Violation Summary

Violations: 9


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

392.2-SLLS2	State/Local Laws - Speeding 6-10 miles per hour over the speed limit	1	0	4	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
393.50	Inadequate reservoir for air/vacuum brakes	1	0	4	Vehicle Maint.
393.75A3-TAOL	Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS	2	2	8	Vehicle Maint.
396.3(a)(1)	Inspection, repair and maintenance of parts and accessories	1	0	2	Vehicle Maint.
172.504(a)	Vehicle not placarded as required	1	0	5	HM Compliance
172.516(c)(1)	Placard not securely affixed or attached	1	1	5	HM Compliance
172.516(c)(6)	Placard damaged, deteriorated, or obscured	1	0	5	HM Compliance

Inspection History

Total Inspections: 10


Report			Vehicle			Measure
Inspection Date	Number	State	Plate Number	Plate State	Type	Severity Weight (SW)	Time Weight (TiW)

4/9/2026	AL1299004254	AL	1A0CB1A	AL	STRAIGHT TRUCK		3
3/11/2026	TXV262267381	TX	1L77352	TX	TRUCK TRACTOR		3
Vehicle Maint. Violation: 396.3(a)(1) Inspection, repair and maintenance of parts and accessories						2
Vehicle Maint. Violation: 393.50 Inadequate reservoir for air/vacuum brakes						4
HM Compliance Violation: 172.504(a) Vehicle not placarded as required						5
12/29/2025	AL1299004030	AL	1A0CB1A	AL	STRAIGHT TRUCK		3
Vehicle Maint. Violation: 393.75A3-TAOL Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS (OOS)						8 + 2 (OOS)
10/24/2025	TXV252060107	TX	174970	KS	TRUCK TRACTOR		2
HM Compliance Violation: 172.516(c)(1) Placard not securely affixed or attached (OOS)						5 + 2 (OOS)
8/25/2025	AL1511004559	AL	1A186RY	AL	STRAIGHT TRUCK		2
Unsafe Driving Violation: 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
7/10/2025	AL1440003396	AL	1A0CB1A	AL	STRAIGHT TRUCK		2
6/11/2025	TXV251905221	TX	1L77352	TX	TRUCK TRACTOR		2
HM Compliance Violation: 172.516(c)(6) Placard damaged, deteriorated, or obscured						5
3/19/2025	SC0324002909	SC	E1483HY	TN	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.75A3-TAOL Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS (OOS)						8 + 2 (OOS)
Unsafe Driving Violation: 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit						4
10/15/2024	TXV241601838	TX	159003	KS	TRUCK TRACTOR		1
9/13/2024	ALMVCV004226	AL	1A0CB1A	AL	STRAIGHT TRUCK		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: 0

This carrier has no crashes to display.

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.

Most Recent Investigation: 1/13/2005 (Compliance Review)
Total Inspections: 10
- Total Inspections without Violations used in SMS: 4
- Total Inspections with Violations used in SMS: 6
Total Crashes* : 0

*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 Details

Carrier Registration

Carrier Registration Details Subject to Hazmat Threshold Update Registration Info

Inspection Selection System

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 06/16/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 182420

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 5/15/2026, updated monthly)

The summary includes information on the 5 most recent investigations and 24 months of inspections and crash history.

Most Recent Investigation: 1/13/2005 (Compliance Review)	Total Inspections: 10 Total inspections without violations used in SMS: 4 Total inspections with violations used in SMS: 6	Total Crashes: 0*
1/13/2005 (Compliance Review) 3/12/2004 (Compliance Review) 9/15/2000 (Compliance Review) 7/22/1998 (Shipper Review) 5/25/1988 (Compliance Review)	# Insp. OOS Driver Inspections 10 0.0% Vehicle Inspections 7 42.9% Placardable HM Inspections 3 33.3% % Placardable HM Inspections 42.9%	Fatal Crashes 0 Injury Crashes 0 Towaway Crashes 0

*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.

Downloads

Select a focus and file type to download SMS data.

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Average PU × Utilization Factor (as of 5/15/2026, updated monthly)

The SMS normalizes the Unsafe Driving and Crash Indicator BASICs measure by carrier size (i.e., a hybrid power unit and vehicle miles travelled measure) to account for exposure. Carrier size is defined as average power units multiplied by the utilization factor.

21.8 Average PU × Utilization Factor = 8 Average Power Units × 2.7249 Utilization Factor

Average Power Units
Utilization Factor

In order to account for changes in a carrier's fleet size during the previous 24 months an average power unit value is used in the calculation to determine a carrier's Unsafe Driving BASIC and Crash Indicator measures.

8 Average Power Units = 8 Current Power Units + 8 Power Units 6 Months Ago + 8 Power Units 18 Months Ago
3

The Utilization Factor is a multiplier that adjusted the average PU values based on the utilization in terms of VMT per average PU.

Determine Carrier Segment: Straight
Straight trucks/other vehicles constituting more than 30% of the total PU
U.S. DOT# 182420 = 62% Straight trucks/other vehicles
Determine VMT per Average Power Unit
54,498 VMT per Average Power Unit = 435,988 VMT From Registration (MCS-150) ÷ 8 Average Power Units

Based on Step 1 and 2 calculate the Utilization Factor

Straight Segment
Meets Criteria	VMT per Avgerage PU	Utilization Factor
	< 20,000	1
	20,000 – 60,000	2.7249 = 54,498 VMT per PU ÷ 20,000
	60,000 – 200,000	3
	> 200,000	1
	No Recent VMT Information	1

Use 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/.