Safety Measurement System - Complete SMS Profile (U.S. DOT# 2329333)

CK BROS CARRIER INC

U.S. DOT#: 2329333

Address: 4082 E FRONTAGE RD
STOCKTON, CA 95215
Number of Vehicles: 44
Number of Drivers: 36
Number of Inspections: 41

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 July 31, 2026

On-Road Performance
0.49 Measure	Not Public	0.56 Measure	3.42 Measure	0 Measure	Not Public	0.24 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 6 Safety Event Group: 3-8 driver inspections with Unsafe Driving Violations Avg. PU × UF: 66.3 Segment: Combination Carrier	Not Public	Driver Inspections: 41 with HOS Compliance Violations: 5 Safety Event Group: 21-100 relevant driver inspections	Vehicle Inspections: 26 with Vehicle Maint. Violations: 11 Safety Event Group: 21-100 relevant vehicle inspections	Driver Inspections: 41 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 41 with Driver Fitness Violations: 1 Safety Event Group: 21-100 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: 38


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

392.2-ML	Failure to Maintain Lane	1	0	5	Unsafe Driving
392.2-SLLS2	State/Local Laws - Speeding 6-10 miles per hour over the speed limit	1	0	4	Unsafe Driving
392.2-SLLS3	State/Local Laws - Speeding 11-14 miles per hour over the speed limit	2	0	7	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	2	0	5	Unsafe Driving
395.20BELDNV	HOS (ELD) - The ELD display screen is not viewable by an authorized official without entering the CMV	1	0	5	HOS Compliance
395.22G-ELDMFV	HOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position.	1	0	1	HOS Compliance
395.22H4-ELDBRODS	HOS (ELD) - In-Vehicle Information - Failing to have a supply of blank driver's records of duty status graph-grids sufficient to record the driver's duty status and other related information for a minimum of 8 days.	1	0	1	HOS Compliance
395.24	HOS (ELD) - ELD Form and Manner	1	0	1	HOS Compliance
395.30B1-ELDDFR	HOS (ELD) - Driver failing to review records and certify the accuracy of the information.	1	0	1	HOS Compliance
395.8E-HOSPD	HOS (Property) - No driver may make a false report in connection with a duty status. Explain	1	0	7	HOS Compliance
395.8E-HOSPDOOS	HOS (Property) - Driver produces a false record of duty status that concealed an HOS limitation violation after the last rest period. Explain:	1	0	7	HOS Compliance
383.23(a)(2)	Operating a CMV without a CDL	1	1	8	Driver Fitness
392.9A2-C	Cargo - Vehicle components or dunnage not secured	1	1	1	Vehicle Maint.
393.11	No or defective lighting devices or reflective material as required	1	0	3	Vehicle Maint.
393.205A-WRC	Wheel/Rim - Rim, spoke wheel, or adapter cracked	1	0	2	Vehicle Maint.
393.45	Brake tubing and hose adequacy	1	1	4	Vehicle Maint.
393.45B2PC	Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit	1	0	4	Vehicle Maint.
393.45D-BAAL	Air Brake - Audible air leak at other than a proper connection	1	0	4	Vehicle Maint.
393.47A-BCLMBD	Drum Brake - Cracked/loose/missing lining/pad	1	0	4	Vehicle Maint.
393.47D2-BLTBD	Drum Brake - Inadequate lining/pad thickness	1	0	4	Vehicle Maint.
393.47(e)	Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt	1	0	4	Vehicle Maint.
393.55D1-B	Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 1997 and each single unit CMV on or after 1998.	1	0	4	Vehicle Maint.
393.55E-B	Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998	1	0	4	Vehicle Maint.
393.60(c)	Windshield - Damaged or Discolored	1	0	1	Vehicle Maint.
393.75(c)	Tire-other tread depth less than 2/32 of inch measured in a major tread groove	1	0	8	Vehicle Maint.
393.95A1	Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated.	1	0	2	Vehicle Maint.
393.9A-LCL	Lighting - Clearance lamp(s) inoperative	1	0	2	Vehicle Maint.
393.9A-LFTSI	Lighting - Front - Turn signal - inoperative	2	0	6	Vehicle Maint.
396.3(a)(1)	Inspection, repair and maintenance of parts and accessories	1	0	2	Vehicle Maint.
396.3A1-BALAC	Brake - Audible air leak from a brake chamber	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	2	2	0	Vehicle Maint.
396.3A1-F	Fuel - Dripping leak.	1	1	3	Vehicle Maint.
396.5(a)	Failing to ensure that vehicle is properly lubricated	1	0	3	Vehicle Maint.
396.9D2-FTF	Failing to correct the violation(s)/defect(s) noted on the roadside inspection report	1	0	4	Vehicle Maint.

Inspection History

Total Inspections: 41


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

1/22/2025	CAUDFU003904	CA	ZP43222	CA	TRUCK TRACTOR		1
1/18/2025	CAUFYK000306	CA	ZP43242	CA	TRUCK TRACTOR		1
1/17/2025	CANDN7008480	CA	ZP32567	CA	TRUCK TRACTOR		1
1/14/2025	CANC3S009443	CA	ZP43223	CA	TRUCK TRACTOR		1
1/8/2025	CAUCRE002706	CA	ZP32566	CA	TRUCK TRACTOR		1
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
1/8/2025	CAUETI000725	CA	ZP43237	CA	TRUCK TRACTOR		1
HOS Compliance Violation: 395.8E-HOSPDOOS HOS (Property) - Driver produces a false record of duty status that concealed an HOS limitation violation after the last rest period. Explain:						7
12/31/2024	CAN92M006803	CA	ZP32588	CA	TRUCK TRACTOR		1
12/30/2024	CAND74009482	CA	ZP02764	CA	TRUCK TRACTOR		1
12/24/2024	CAUEQD000169	CA	ZP32588	CA	TRUCK TRACTOR		1
12/21/2024	NM6293O9WBGT	NM	ZP32566	CA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit						4
12/20/2024	CANDDN005907	CA	ZP43228	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.9A-LCL Lighting - Clearance lamp(s) inoperative						2
12/10/2024	CAND7X006213	CA	ZP32588	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.47(e) Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt						4
Vehicle Maint. Violation: 396.3A1-BALAC Brake - Audible air leak from a brake chamber						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)
12/10/2024	CAUEK2000147	CA	ZP43215	CA	TRUCK TRACTOR		1
12/9/2024	CAND74009430	CA	YP57873	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.45D-BAAL Air Brake - Audible air leak at other than a proper connection						4
HOS Compliance Violation: 395.20BELDNV HOS (ELD) - The ELD display screen is not viewable by an authorized official without entering the CMV						5
12/7/2024	KYCV44174991	KY	ZP02765	CA	TRUCK TRACTOR		1
12/3/2024	CANCNK008156	CA	ZP43201	CA	TRUCK TRACTOR		1
11/26/2024	CAND7X006176	CA	ZP43222	CA	TRUCK TRACTOR		1
11/24/2024	CAUC13004451	CA	ZP13493	CA	TRUCK TRACTOR		1
11/14/2024	CAUE2C004875	CA	YP83252	CA	TRUCK TRACTOR		1
11/14/2024	CANCV6007496	CA	ZP43223	CA	TRUCK TRACTOR		1
11/8/2024	IA000P142LX9	IA	YP83252	CA	TRUCK TRACTOR		1
11/3/2024	CAUEQD000104	CA	ZP43223	CA	TRUCK TRACTOR		1
10/21/2024	CAUFV3003854	CA	YP83226	CA	TRUCK TRACTOR		1
10/18/2024	CAUEGR001683	CA	ZP02761	CA	TRUCK TRACTOR		1
10/2/2024	CAUFV3003824	CA	ZP32564	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.55D1-B Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 1997 and each single unit CMV on or after 1998.						4
Vehicle Maint. Violation: 393.9A-LFTSI Lighting - Front - Turn signal - inoperative						6
HOS Compliance Violation: 395.8E-HOSPD HOS (Property) - No driver may make a false report in connection with a duty status. Explain						7
10/1/2024	CAUD4G003242	CA	XP82783	CA	TRUCK TRACTOR		1
9/30/2024	CANE02004787	CA	YP58343	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 396.3(a)(1) Inspection, repair and maintenance of parts and accessories						2
9/29/2024	NM6604O7L95G	NM	ZP32566	CA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.2-SLLS3 State/Local Laws - Speeding 11-14 miles per hour over the speed limit						7
9/26/2024	NM4294O7I2QG	NM	ZP32565	CA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.2-ML Failure to Maintain Lane						5
9/15/2024	CAUDM0001975	CA	YP95765	CA	TRUCK TRACTOR		1
9/12/2024	CAUDO7000475	CA	XP82782	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.45B2PC Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit						4
9/11/2024	CAUE2C004733	CA	ZP13493	CA	TRUCK TRACTOR		1
9/10/2024	CANDV8003553	CA	ZP13493	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.45 Brake tubing and hose adequacy (OOS)						4 + 2 (OOS)
Vehicle Maint. Violation: 396.5(a) Failing to ensure that vehicle is properly lubricated						3
9/5/2024	CAUED8000618	CA	XP92228	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.11 No or defective lighting devices or reflective material as required						3
Vehicle Maint. Violation: 393.75(c) Tire-other tread depth less than 2/32 of inch measured in a major tread groove						8
8/29/2024	AZXB25950589	AZ	ZP32566	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.95A1 Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated.						2
Vehicle Maint. Violation: 393.47D2-BLTBD Drum Brake - Inadequate lining/pad thickness						4
Vehicle Maint. Violation: 393.47A-BCLMBD Drum Brake - Cracked/loose/missing lining/pad						4
Vehicle Maint. Violation: 393.205A-WRC Wheel/Rim - Rim, spoke wheel, or adapter cracked						2
Vehicle Maint. Violation: 393.9A-LFTSI Lighting - Front - Turn signal - inoperative						6
Vehicle Maint. Violation: 396.3A1-F Fuel - Dripping leak. (OOS)						3 + 2 (OOS)
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)
8/23/2024	CAUDRI002292	CA	XP92152	CA	TRUCK TRACTOR		1
8/21/2024	AZ7251000477	AZ	ZP32564	CA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 392.9A2-C Cargo - Vehicle components or dunnage not secured (OOS)						1 + 2 (OOS)
Vehicle Maint. Violation: 393.55E-B Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998						4
HOS Compliance Violation: 395.24 HOS (ELD) - ELD Form and Manner						1
HOS Compliance Violation: 395.30B1-ELDDFR HOS (ELD) - Driver failing to review records and certify the accuracy of the information.						1
8/20/2024	CANDLR004993	CA	XP92152	CA	TRUCK TRACTOR		1
Driver Fitness Violation: 383.23(a)(2) Operating a CMV without a CDL (OOS)						8 + 2 (OOS)
8/14/2024	AZ1078900082	AZ	YP58315	CA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.2-SLLS3 State/Local Laws - Speeding 11-14 miles per hour over the speed limit						7
HOS Compliance Violation: 395.22H4-ELDBRODS HOS (ELD) - In-Vehicle Information - Failing to have a supply of blank driver's records of duty status graph-grids sufficient to record the driver's duty status a						1
HOS Compliance Violation: 395.22G-ELDMFV HOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position.						1
8/10/2024	UT24PL001365	UT	YP95766	CA	TRUCK TRACTOR		1
8/6/2024	UT24IX001153	UT	YP79688	CA	TRUCK TRACTOR		1
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
Vehicle Maint. Violation: 393.60(c) Windshield - Damaged or Discolored						1
Vehicle Maint. Violation: 396.9D2-FTF Failing to correct the violation(s)/defect(s) noted on the roadside inspection report						4

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: 1


Report			Vehicle		Crash				Measure = Sum of the Total Weight (TotW)
Date	Number	State	Plate Number	Plate State	Fatal	Inj.	Tow.	HM	Severity Weight (SW)	Time Weight (TiW)	Total Weight (TotW)

9/26/2024	NM0711032412	NM	ZP32565	CA	0	0	Yes	No	1	1	1

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: 8/30/2024 (Non-Ratable Review)
Total Inspections: 41
- Total Inspections without Violations used in SMS: 23
- Total Inspections with Violations used in SMS: 18
Total Crashes* : 1

*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

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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 09/06/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 2329333

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 7/31/2026, updated monthly)

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

Most Recent Investigation: 8/30/2024 (Non-Ratable Review)	Total Inspections: 41 Total inspections without violations used in SMS: 23 Total inspections with violations used in SMS: 18	Total Crashes: 1*
8/30/2024 (Non-Ratable Review)	# Insp. OOS Driver Inspections 41 2.4% Vehicle Inspections 26 15.4% Placardable HM Inspections 0 0.0% % Placardable HM Inspections 0.0%	Fatal Crashes 0 Injury Crashes 0 Towaway Crashes 1

*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

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Average PU × Utilization Factor (as of 7/31/2026, 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.

66.3 Average PU × Utilization Factor = 44 Average Power Units × 1.5069 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.

44 Average Power Units = 44 Current Power Units + 44 Power Units 6 Months Ago + 44 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# 2329333 = 100% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
147,593 VMT per Average Power Unit = 6,494,094 VMT From Investigation (MCS-151) ÷ 44 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	1.5069 = 1 + ( 147,593 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/.