Safety Measurement System - Complete SMS Profile (U.S. DOT# 629606)

WILLIAMS TRUCKING SERVICES INC

U.S. DOT#: 629606

Address: 2341 INWOOD AVE
JOLLEY, IA 50551
Number of Vehicles: 14
Number of Drivers: 7
Number of Inspections: 8

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
2.35 Measure	Not Public	0 Measure	11 Measure	0 Measure	Not Public	4.36 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 4 Safety Event Group: 3-8 driver inspections with Unsafe Driving Violations Avg. PU × UF: 14 Segment: Combination Carrier	Not Public	Driver Inspections: 8 with HOS Compliance Violations: 0 Safety Event Group: 3-10 relevant driver inspections	Vehicle Inspections: 1 with Vehicle Maint. Violations: 1 Safety Event Group: No Safety Event Grouping	Driver Inspections: 8 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 8 with Driver Fitness Violations: 2 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	Failing to use seat belt while operating a CMV	3	0	7	Unsafe Driving
392.2C	Failure to obey traffic control device	1	0	5	Unsafe Driving
383.23(a)(2)	Operating a CMV without a CDL	1	1	8	Driver Fitness
383.71H	License (CDL) - CDL or CLP holder possesses a valid medical certificate but is not on file with the issuing state driver's licensing agency as required	1	0	1	Driver Fitness
391.11(b)(4)	Driver operating a CMV without proper endorsements or in violation of restrictions	1	1	8	Driver Fitness
391.41(a)	Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency. History of either failing to produce a medical certificate or having an expired medical certificate.	1	1	1	Driver Fitness
392.7(a)	Driver failing to conduct pre-trip inspection	1	0	4	Vehicle Maint.
393.11	No or defective lighting devices or reflective material as required	1	1	3	Vehicle Maint.
393.9	Inoperable Required Lamp	1	0	2	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)

10/16/2025	IA000P169BLL	IA	JC0488	IA	TRUCK TRACTOR		2
Unsafe Driving Violation: 392.16 Failing to use seat belt while operating a CMV						7
9/22/2025	IA000P16D9DF	IA	AT8695	IA	TRUCK TRACTOR		2
Driver Fitness Violation: 383.23(a)(2) Operating a CMV without a CDL (OOS)						8 + 2 (OOS)
Driver Fitness Violation: 383.71H License (CDL) - CDL or CLP holder possesses a valid medical certificate but is not on file with the issuing state driver's licensing agency as required						1
Driver Fitness Violation: 391.41(a) Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency. History of either fail (OOS)						1 + 2 (OOS)
9/9/2025	IA000P123GNV	IA	JC0488	IA	TRUCK TRACTOR		2
Driver Fitness Violation: 391.11(b)(4) Driver operating a CMV without proper endorsements or in violation of restrictions (OOS)						8 + 2 (OOS)
1/31/2025	IA000P10GG73	IA	BH1228	IA	TRUCK TRACTOR		1
12/9/2024	IA000P1699D2	IA	IF2803	IA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 392.7(a) Driver failing to conduct pre-trip inspection						4
Vehicle Maint. Violation: 393.11 No or defective lighting devices or reflective material as required (OOS)						3 + 2 (OOS)
Vehicle Maint. Violation: 393.9 Inoperable Required Lamp						2
10/3/2024	IA000P12HXRB	IA	AT8695	IA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.16 Failing to use seat belt while operating a CMV						7
9/27/2024	IA000P16D80L	IA	HV1677	IA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.16 Failing to use seat belt while operating a CMV						7
8/7/2024	IA000P12HXKC	IA	HV1677	IA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.2C Failure to obey traffic control device						5

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)

10/21/2025	IA2501508615	IA	JC0488	IA	0	1	No	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: 9/14/2017 (Non-Ratable Review)
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

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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 08/24/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 629606

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: 9/14/2017 (Non-Ratable Review)	Total Inspections: 8 Total inspections without violations used in SMS: 1 Total inspections with violations used in SMS: 7	Total Crashes: 1*
9/14/2017 (Non-Ratable Review) 1/14/2014 (Non-Ratable Review)	# Insp. OOS Driver Inspections 8 25.0% Vehicle Inspections 1 100.0% 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

Select a focus and file type to download SMS data.

Focus:
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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.

14 Average PU × Utilization Factor = 14 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.

14 Average Power Units = 14 Current Power Units + 14 Power Units 6 Months Ago + 14 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# 629606 = 100% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
0 VMT per Average Power Unit = 0 VMT From ÷ 14 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/.