Safety Measurement System - Complete SMS Profile (U.S. DOT# 2488248)

GRINDSTONE TRANSPORTATION LLC

U.S. DOT#: 2488248

Address: 4100 NORTH RAUL LONGORIA ROAD
SAN JUAN, TX 78589
Number of Vehicles: 11
Number of Drivers: 11
Number of Inspections: 20

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 June 26, 2026

On-Road Performance
4 Measure	Not Public	1.25 Measure	6 Measure	0 Measure	Not Public	0.82 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 3 Safety Event Group: 3-8 driver inspections with Unsafe Driving Violations Avg. PU × UF: 9 Segment: Combination Carrier	Not Public	Driver Inspections: 20 with HOS Compliance Violations: 4 Safety Event Group: 11-20 relevant driver inspections	Vehicle Inspections: 12 with Vehicle Maint. Violations: 5 Safety Event Group: 11-20 relevant vehicle inspections	Driver Inspections: 20 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 20 with Driver Fitness Violations: 1 Safety Event Group: 11-20 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: 23


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

392.22(a)	Failing to use hazard warning flashers	1	0	1	Unsafe Driving
392.2-SLLILC	State/Local Laws - Improper lane change	1	0	5	Unsafe Driving
392.2-SLLS4	State/Local Laws - Speeding 15 or more miles per hour over the speed limit	1	0	10	Unsafe Driving
395.24	HOS (ELD) - ELD Form and Manner	1	0	1	HOS Compliance
395.8(e)(1)PC	HOS - False record of duty status driver improper use of Personal Conveyance - Not OOS	2	0	7	HOS Compliance
395.8E-HOSPCDOOS	HOS (Property) - Co-driver produces a false record of duty status with an apparent attempt to conceal hours. Explain	1	0	7	HOS Compliance
383.23(a)(2)	Operating a CMV without a CDL	1	1	8	Driver Fitness
391.41APC	Medical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency when medical certification is required.	1	1	1	Driver Fitness
392.7A-D	Driver - Failed to conduct pre-trip inspection or make use of required parts and accessories	1	0	4	Vehicle Maint.
393.11A1-LCHL	Lighting - Lamps improper color, height, location.	1	0	6	Vehicle Maint.
393.11TL	Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997	1	0	3	Vehicle Maint.
393.11TU	Truck-Tractor upper body corner requirements for retroreflective sheeting or reflex reflective material for vehicles manufactured after July 1997	1	0	3	Vehicle Maint.
393.19	Inoperative/Defective Hazard Warning Lamp	1	0	6	Vehicle Maint.
393.205(a)	Wheel/rim cracked or broken	1	0	2	Vehicle Maint.
393.45B2UV	Brake Hose or Tubing Chafing and/or Kinking Under Vehicle	1	1	4	Vehicle Maint.
393.55(e)	No or Defective ABS Malfunction Indicator Lamp for trailer manufactured after 03/01/1998	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	1	1	8	Vehicle Maint.
393.9	Inoperable Required Lamp	2	0	2	Vehicle Maint.
393.9TS	Inoperative turn signal	1	0	6	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.

Inspection History

Total Inspections: 20


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

6/17/2026	GA1387000717	GA	R769327	TX	TRUCK TRACTOR		3
Unsafe Driving Violation: 392.2-SLLILC State/Local Laws - Improper lane change						5
6/14/2026	TXV262412991	TX	R781085	TX	TRUCK TRACTOR		3
Driver Fitness Violation: 391.41APC Medical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency (OOS)						1 + 2 (OOS)
Vehicle Maint. Violation: 393.9 Inoperable Required Lamp						2
Driver Fitness Violation: 383.23(a)(2) Operating a CMV without a CDL (OOS)						8 + 2 (OOS)
6/11/2026	GA1466000384	GA	R769327	TX	TRUCK TRACTOR		3
5/29/2026	TNI035670093	TN	R800317	TX	TRUCK TRACTOR		3
5/27/2026	AZXE80430376	AZ	R769327	TX	TRUCK TRACTOR		3
Vehicle Maint. Violation: 392.7A-D Driver - Failed to conduct pre-trip inspection or make use of required parts and accessories						4
HOS Compliance Violation: 395.24 HOS (ELD) - ELD Form and Manner						1
Vehicle Maint. Violation: 393.11A1-LCHL Lighting - Lamps improper color, height, location.						6
Vehicle Maint. Violation: 396.17C-PI Operating a CMV without documentation of a periodic inspection						4
4/20/2026	MD3288C00134	MD	R826240	TX	TRUCK TRACTOR		3
HOS Compliance Violation: 395.8(e)(1)PC HOS - False record of duty status driver improper use of Personal Conveyance - Not OOS						7
3/10/2026	TXV262266510	TX	R781085	TX	TRUCK TRACTOR		3
3/2/2026	MD3240C00523	MD	R769327	TX	TRUCK TRACTOR		3
2/26/2026	TXV262242697	TX	R800317	TX	TRUCK TRACTOR		3
Vehicle Maint. Violation: 393.11TU Truck-Tractor upper body corner requirements for retroreflective sheeting or reflex reflective material for vehicles manufactured after July 1997						3
Vehicle Maint. Violation: 393.9 Inoperable Required Lamp						2
Vehicle Maint. Violation: 393.55(e) No or Defective ABS Malfunction Indicator Lamp for trailer manufactured after 03/01/1998						4
Vehicle Maint. Violation: 396.3(a)(1) Inspection, repair and maintenance of parts and accessories						2
Vehicle Maint. Violation: 393.45B2UV Brake Hose or Tubing Chafing and/or Kinking Under Vehicle (OOS)						4 + 2 (OOS)
Vehicle Maint. Violation: 393.205(a) Wheel/rim cracked or broken						2
Vehicle Maint. Violation: 393.11TL Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997						3
12/29/2025	TNI5Z3012241	TN	R800318	TX	TRUCK TRACTOR		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)
HOS Compliance Violation: 395.8(e)(1)PC HOS - False record of duty status driver improper use of Personal Conveyance - Not OOS						7
12/1/2025	LALARRS01173	LA	R599876	TX	TRUCK TRACTOR		2
12/1/2025	MD3240C00375	MD	R825787	TX	TRUCK TRACTOR		2
HOS Compliance Violation: 395.8E-HOSPCDOOS HOS (Property) - Co-driver produces a false record of duty status with an apparent attempt to conceal hours. Explain						7
11/15/2025	TXV252119649	TX	R759677	TX	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.9TS Inoperative turn signal						6
Vehicle Maint. Violation: 393.19 Inoperative/Defective Hazard Warning Lamp						6
9/2/2025	LALARIS01220	LA	R781085	TX	TRUCK TRACTOR		2
Unsafe Driving Violation: 392.2-SLLS4 State/Local Laws - Speeding 15 or more miles per hour over the speed limit						10
8/24/2025	NC0006790405	NC	R759678	TX	TRUCK TRACTOR		2
7/28/2025	TNI01R841753	TN	R769327	TX	TRUCK TRACTOR		2
7/6/2025	TXV251943842	TX	R759678	TX	TRUCK TRACTOR		2
9/24/2024	TXV241586836	TX	R401540	TX	TRUCK TRACTOR		1
9/8/2024	NJSPRII00165	NJ	R703167	TX	TRUCK TRACTOR		1
7/1/2024	LALAGA002982	LA	R599876	TX	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.22(a) Failing to use hazard warning flashers						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: 3


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)

11/16/2025	AL0005724148	AL	R769327	TX	0	0	Yes	No	1	2	2
8/14/2025	NJ0006983007	NJ	R759678	TX	0	0	Yes	No	1	2	2
1/27/2025	PA501111800X	PA	R569810	TX	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:
Total Inspections: 20
- Total Inspections without Violations used in SMS: 10
- Total Inspections with Violations used in SMS: 10
Total Crashes* : 3

*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 08/05/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 2488248

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 6/26/2026, 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: 20 Total inspections without violations used in SMS: 10 Total inspections with violations used in SMS: 10	Total Crashes: 3*
	# Insp. OOS Driver Inspections 20 5.0% Vehicle Inspections 12 16.7% Placardable HM Inspections 0 0.0% % Placardable HM Inspections 0.0%	Fatal Crashes 0 Injury Crashes 0 Towaway Crashes 3

*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 6/26/2026, 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.

9 Average PU × Utilization Factor = 9 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.

9 Average Power Units = 11 Current Power Units + 9 Power Units 6 Months Ago + 7 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# 2488248 = 100% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
77,300 VMT per Average Power Unit = 695,703 VMT From Registration (MCS-150) ÷ 9 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/.