Safety Measurement System - Complete SMS Profile (U.S. DOT# 3470036)

TWIN BROTHERS TRUCKING INC

U.S. DOT#: 3470036

Address: 1007 N MARIPOSA AVE APT 5
LOS ANGELES, CA 90029
Number of Vehicles: 2
Number of Drivers: 2
Number of Inspections: 7

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 August 28, 2026

On-Road Performance
0 Measure	Not Public	0.62 Measure	8.50 Measure	0 Measure	Not Public	0 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 0 Safety Event Group: No Safety Event Grouping Avg. PU × UF: 2 Segment: Combination Carrier	Not Public	Driver Inspections: 7 with HOS Compliance Violations: 1 Safety Event Group: 3-10 relevant driver inspections	Vehicle Inspections: 6 with Vehicle Maint. Violations: 5 Safety Event Group: 5-10 relevant vehicle inspections	Driver Inspections: 7 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 7 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: 17


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

395.32B-ELDDFR	HOS (ELD) - Driver failed to review any unassigned driving time when prompted by the ELD	1	0	5	HOS Compliance
393.45B2-B-AIR	Air Brake - Hose/tubing damaged or not secured	1	0	4	Vehicle Maint.
393.45B2PC	Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit	1	0	4	Vehicle Maint.
393.45D-B	Air Brake - Audible air leak at a proper connection	2	0	4	Vehicle Maint.
393.47A-BCLMBD-SA	Drum Brake - Cracked/loose/missing lining/pad on a steering axle	1	1	4	Vehicle Maint.
393.60(c)	Windshield - Damaged or Discolored	3	0	1	Vehicle Maint.
393.9A-LLPL	Lighting - License plate lamp inoperative	1	0	2	Vehicle Maint.
396.17C-PI	Operating a CMV without documentation of a periodic inspection	1	0	4	Vehicle Maint.
396.3(a)(1)	Inspection, repair and maintenance of parts and accessories	1	0	2	Vehicle Maint.
396.3A1-ALBV	Air Brake - Any leak from a brake valve	1	0	4	Vehicle Maint.
396.3A1-BALAC	Brake - Audible air leak from a brake chamber	2	0	4	Vehicle Maint.
396.3A1-BALR	Air Brake - Fails air loss rate test	1	0	4	Vehicle Maint.
396.3(a)1BOS	Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination	1	1	0	Vehicle Maint.

Inspection History

Total Inspections: 7


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

9/3/2025	DE0398001647	DE	YP01353	CA	TRUCK TRACTOR		2
6/25/2025	CAN91G006376	CA	YP01351	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.45D-B Air Brake - Audible air leak at a proper connection						4
Vehicle Maint. Violation: 396.3A1-BALAC Brake - Audible air leak from a brake chamber						4
Vehicle Maint. Violation: 396.3A1-BALR Air Brake - Fails air loss rate test						4
6/25/2025	WA2116001253	WA	YP01353	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 396.17C-PI Operating a CMV without documentation of a periodic inspection						4
Vehicle Maint. Violation: 396.3(a)1BOS Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination (OOS)						0 + 2 (OOS)
Vehicle Maint. Violation: 396.3A1-BALAC Brake - Audible air leak from a brake chamber						4
Vehicle Maint. Violation: 393.9A-LLPL Lighting - License plate lamp inoperative						2
Vehicle Maint. Violation: 393.60(c) Windshield - Damaged or Discolored						1
Vehicle Maint. Violation: 393.45B2-B-AIR Air Brake - Hose/tubing damaged or not secured						4
Vehicle Maint. Violation: 393.45D-B Air Brake - Audible air leak at a proper connection						4
Vehicle Maint. Violation: 393.47A-BCLMBD-SA Drum Brake - Cracked/loose/missing lining/pad on a steering axle (OOS)						4 + 2 (OOS)
3/29/2025	CANFAC000613	CA	YP01353	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.60(c) Windshield - Damaged or Discolored						1
2/18/2025	NM9595P1DDBS	NM	YP01353	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.45B2PC Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit						4
Vehicle Maint. Violation: 396.3(a)(1) Inspection, repair and maintenance of parts and accessories						2
12/7/2024	MOW149006636	MO	YP78252	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 396.3A1-ALBV Air Brake - Any leak from a brake valve						4
Vehicle Maint. Violation: 393.60(c) Windshield - Damaged or Discolored						1
HOS Compliance Violation: 395.32B-ELDDFR HOS (ELD) - Driver failed to review any unassigned driving time when prompted by the ELD						5
8/28/2024	KYCV44375445	KY	YP01353	CA	TRUCK TRACTOR		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:
Total Inspections: 7
- Total Inspections without Violations used in SMS: 2
- Total Inspections with Violations used in SMS: 5
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 General 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 10/03/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 3470036

Complete SMS Profile Carrier History Downloads

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

Most Recent Investigation: None	Total Inspections: 7 Total inspections without violations used in SMS: 2 Total inspections with violations used in SMS: 5	Total Crashes: 0*
	# Insp. OOS Driver Inspections 7 0.0% Vehicle Inspections 6 16.7% Placardable HM Inspections 0 0.0% % Placardable HM Inspections 0.0%	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.

Average PU × Utilization Factor (as of 8/28/2026, 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.

2 Average PU × Utilization Factor = 2 Average Power Units × 1 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.

2 Average Power Units = 2 Current Power Units + 2 Power Units 6 Months Ago + 2 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: Combo
Combination trucks/motor coach buses constituting 70% or more of the total PU
U.S. DOT# 3470036 = 100% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
14,900 VMT per Average Power Unit = 29,801 VMT From Registration (MCS-150) ÷ 2 Average Power Units

Based on Step 1 and 2 calculate the Utilization Factor

Combo Segment
Meets Criteria	VMT per Avgerage PU	Utilization Factor
	< 80,000	1
	80,000 – 160,000	1 + (VMT per PU − 80,000) ÷ 133,333
	160,000 – 200,000	1.6
	> 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/.