Safety Measurement System - Complete SMS Profile (U.S. DOT# 641361)

DIEMER CONSTRUCTION CO LLC

U.S. DOT#: 641361

Address: 14211 S 13TH
TONKAWA, OK 74653
Number of Vehicles: 52
Number of Drivers: 25
Number of Inspections: 8

Safety Rating & OOS Rates AND Licensing and Insurance

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BASIC Status (Public Property Carrier View)

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

On-Road Performance
0.63 Measure	Not Public	0 Measure	7.41 Measure	0 Measure	Not Public	0.44 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 2 Safety Event Group: No Safety Event Grouping Avg. PU × UF: 52 Segment: Combination Carrier	Not Public	Driver Inspections: 8 with HOS Compliance Violations: 0 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: 8 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 8 with Driver Fitness Violations: 1 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: 11


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

392.16-D	Driver - Failed to use seat belt while operating a CMV	1	0	7	Unsafe Driving
392.2-SLLS2	State/Local Laws - Speeding 6-10 miles per hour over the speed limit	1	0	4	Unsafe Driving
391.11(b)(4)	Medical (Certificate) - Operating a CDL (passenger or property carrying) vehicle that is non-excepted and the driver has self-certified as excepted interstate or excepted intrastate with the state driver's licensing agency.	1	1	2	Driver Fitness
393.130C-CHVE	Heavy Vehicles/Equipment - Improper securement of heavy vehicles, equipment or machinery with crawler tracks or wheels	2	2	7	Vehicle Maint.
393.47(e)	Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt	1	0	4	Vehicle Maint.
393.53BMAN	Air Brake - CMV manufactured on or after 10/20/1994 is not equipped with automatic air brake adjusters	1	0	4	Vehicle Maint.
393.9A-LHLI	Lighting - Headlamp(s) - Any inoperative	1	0	6	Vehicle Maint.
393.9A-LSML	Lighting - Side marker lamp(s) inoperative	1	0	2	Vehicle Maint.
396.3A1B	Brakes (general) Explain:	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: 8


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

3/6/2026	OKQ513151663	OK	1XT016	OK	TRUCK TRACTOR		3
Unsafe Driving Violation: 392.16-D Driver - Failed to use seat belt while operating a CMV						7
12/31/2025	OKJ407154426	OK	2RA853	OK	TRUCK TRACTOR		3
Unsafe Driving Violation: 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit						4
11/24/2025	OKH514154344	OK	2MH248	OK	TRUCK TRACTOR		3
Vehicle Maint. Violation: 393.130C-CHVE Heavy Vehicles/Equipment - Improper securement of heavy vehicles, equipment or machinery with crawler tracks or wheels (OOS)						7 + 2 (OOS)
7/3/2025	OKX311155804	OK	2UQ643	OK	TRUCK TRACTOR		2
Driver Fitness Violation: 391.11(b)(4) Medical (Certificate) - Operating a CDL (passenger or property carrying) vehicle that is non-excepted and the driver has self-certified as excepted interstate or (OOS)						2 + 2 (OOS)
Vehicle Maint. Violation: 393.130C-CHVE Heavy Vehicles/Equipment - Improper securement of heavy vehicles, equipment or machinery with crawler tracks or wheels (OOS)						7 + 2 (OOS)
6/19/2025	OKX311155747	OK	2RV598	OK	STRAIGHT TRUCK		2
Vehicle Maint. Violation: 393.47(e) Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt						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: 393.53BMAN Air Brake - CMV manufactured on or after 10/20/1994 is not equipped with automatic air brake adjusters						4
6/17/2025	TXV251918541	TX	2HF583	OK	TRUCK TRACTOR		2
Vehicle Maint. Violation: 396.3A1B Brakes (general) Explain:						4
6/13/2025	OKH513154496	OK	2SC803	OK	STRAIGHT TRUCK		2
Vehicle Maint. Violation: 393.9A-LSML Lighting - Side marker lamp(s) inoperative						2
Vehicle Maint. Violation: 393.9A-LHLI Lighting - Headlamp(s) - Any inoperative						6
4/30/2024	OKV600172026	OK	3HZ155	OK	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: 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)

10/3/2025	OK2510003154	OK	2TA991	OK	0	1	Yes	No	2	2	4

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: 8
- Total Inspections without Violations used in SMS: 1
- Total Inspections with Violations used in SMS: 7
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

Carrier Registration Details Subject to General Threshold Update Registration Info

Inspection Selection System

Enforcement Cases

(Six years as of 05/25/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 641361

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 4/24/2026, updated monthly)

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

Most Recent Investigation: None	Total Inspections: 8 Total inspections without violations used in SMS: 1 Total inspections with violations used in SMS: 7	Total Crashes: 1*
	# Insp. OOS Driver Inspections 8 12.5% Vehicle Inspections 6 50.0% Placardable HM Inspections 0 0.0% % Placardable HM Inspections 0.0%	Fatal Crashes 0 Injury Crashes 1 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

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Average PU × Utilization Factor (as of 4/24/2026, 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.

52 Average PU × Utilization Factor = 52 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.

52 Average Power Units = 52 Current Power Units + 52 Power Units 6 Months Ago + 52 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# 641361 = 75% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
8,671 VMT per Average Power Unit = 450,936 VMT From Registration (MCS-150) ÷ 52 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/.