Safety Measurement System - Complete SMS Profile (U.S. DOT# 10559)

TROTTING FOX LLC

DBA: DAVIDSON BROTHERS

U.S. DOT#: 10559

Address: 450 RUNVILLE RD
BELLEFONTE, PA 16823-4715
Number of Vehicles: 42
Number of Drivers: 26
Number of Inspections: 36

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 May 15, 2026

On-Road Performance
2.74 Measure	Not Public	0.22 Measure	7.07 Measure	0 Measure	Not Public	0 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 8 Safety Event Group: 3-8 driver inspections with Unsafe Driving Violations Avg. PU × UF: 39 Segment: Combination Carrier	Not Public	Driver Inspections: 36 with HOS Compliance Violations: 3 Safety Event Group: 21-100 relevant driver inspections	Vehicle Inspections: 21 with Vehicle Maint. Violations: 16 Safety Event Group: 21-100 relevant vehicle inspections	Driver Inspections: 36 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 36 with Driver Fitness Violations: 0 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: 44


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
392.2-SLLS3	State/Local Laws - Speeding 11-14 miles per hour over the speed limit	2	0	7	Unsafe Driving
392.2-SLLS4	State/Local Laws - Speeding 15 or more miles per hour over the speed limit	1	0	10	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	3	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
395.24C2III	Driver failed to manually add shipping document number	1	0	1	HOS Compliance
395.8(e)(1)PC	HOS - False record of duty status driver improper use of Personal Conveyance - Not OOS	1	0	7	HOS Compliance
393.104(b)	Damaged securement system/tiedowns	1	1	1	Vehicle Maint.
393.11A1-CSLRR	Conspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997	1	0	3	Vehicle Maint.
393.201A-FRWC	Frame - Cracked siderail web at least 1-1/2 inches directed toward the bottom flange	1	1	2	Vehicle Maint.
393.205(b)	Stud/bolt holes elongated on wheels	1	1	2	Vehicle Maint.
393.205(c)	Wheel fasteners loose and/or missing	1	1	2	Vehicle Maint.
393.207(b)	Adjustable axle locking pins missing or not engaged	1	0	7	Vehicle Maint.
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.
393.48A-BMBCBD	Drum Brake - Missing/broken component(s)	1	0	4	Vehicle Maint.
393.51C-BLPW	Air Brake - Low pressure warning device missing/inoperative	1	1	4	Vehicle Maint.
393.75(a)	Flat tire or fabric exposed	1	1	8	Vehicle Maint.
393.75(c)	Tire-other tread depth less than 2/32 of inch measured in a major tread groove	2	0	8	Vehicle Maint.
393.81	Horn inoperative	1	0	3	Vehicle Maint.
393.81-H	Horn - Inoperative or defective	1	0	3	Vehicle Maint.
393.86A1-RIG	Rear Impact Guards - Trailers and semitrailers manufactured on or after January 26, 1998 inadequate or missing.	1	0	2	Vehicle Maint.
393.9	Inoperable Required Lamp	1	0	2	Vehicle Maint.
393.9A-LBL	Lighting - Backup lamp inoperative	1	0	6	Vehicle Maint.
393.9A-LCL	Lighting - Clearance lamp(s) inoperative	1	0	2	Vehicle Maint.
393.9A-LFTSI	Lighting - Front - Turn signal - inoperative	1	0	6	Vehicle Maint.
393.9A-LIL	Lighting - Identification lamp(s) inoperative	2	0	2	Vehicle Maint.
393.9A-LSLI	Lighting - Stop lamps - Any inoperative.	1	0	6	Vehicle Maint.
393.9A-LSLIWR	Lighting - Stop lamps - Both inoperative when required to be on	1	1	6	Vehicle Maint.
393.9A-LSML	Lighting - Side marker lamp(s) inoperative	1	0	2	Vehicle Maint.
393.9A-LTSI	Lighting - Turn signal - Any inoperative on the rearmost vehicle.	1	1	6	Vehicle Maint.
393.9A-LTSIR	Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit	1	0	6	Vehicle Maint.
393.9(a)	Inoperative Brake Lamps	1	0	6	Vehicle Maint.
396.17(c)	Operating a CMV without proof 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.
396.3A1B	Brakes (general) Explain:	1	0	4	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	1	1	0	Vehicle Maint.

Inspection History

Total Inspections: 36


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

3/6/2026	WVSP00130184	WV	AH30084	PA	TRUCK TRACTOR		3
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
3/6/2026	PAC111606509	PA	AH30068	PA	TRUCK TRACTOR		3
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
12/9/2025	PAE952534320	PA	AH30075	PA	TRUCK TRACTOR		3
Unsafe Driving Violation: 392.2-SLLS3 State/Local Laws - Speeding 11-14 miles per hour over the speed limit						7
12/4/2025	PAXL00088035	PA	AH30087	PA	TRUCK TRACTOR		3
11/12/2025	PAG703531655	PA	AH30089	PA	TRUCK TRACTOR		2
Unsafe Driving Violation: 392.2-SLLS3 State/Local Laws - Speeding 11-14 miles per hour over the speed limit						7
11/6/2025	PAE940531082	PA	AH62226	PA	TRUCK TRACTOR		2
Unsafe Driving Violation: 392.2-SLLS2 State/Local Laws - Speeding 6-10 miles per hour over the speed limit						4
9/29/2025	PAP116527229	PA	AH30077	PA	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.86A1-RIG Rear Impact Guards - Trailers and semitrailers manufactured on or after January 26, 1998 inadequate or missing.						2
9/16/2025	PAA139525902	PA	AH30069	PA	TRUCK TRACTOR		2
9/16/2025	PAP119525999	PA	AH30077	PA	TRUCK TRACTOR		2
9/9/2025	PAE921525245	PA	AH30070	PA	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.9A-LCL Lighting - Clearance lamp(s) inoperative						2
Vehicle Maint. Violation: 393.51C-BLPW Air Brake - Low pressure warning device missing/inoperative (OOS)						4 + 2 (OOS)
8/25/2025	NYSPE3090753	NY	AH30069	PA	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.81-H Horn - Inoperative or defective						3
7/22/2025	PAE940520353	PA	AH30069	PA	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.9A-LIL Lighting - Identification lamp(s) inoperative						2
7/22/2025	NYSPE3040921	NY	AH30084	PA	TRUCK TRACTOR		2
7/2/2025	PAA312518386	PA	AH30068	PA	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.201A-FRWC Frame - Cracked siderail web at least 1-1/2 inches directed toward the bottom flange (OOS)						2 + 2 (OOS)
6/26/2025	CT3070007085	CT	AH62226	PA	TRUCK TRACTOR		2
6/23/2025	PAA402517480	PA	AH30074	PA	TRUCK TRACTOR		2
Unsafe Driving Violation: 392.16-D Driver - Failed to use seat belt while operating a CMV						7
6/2/2025	PAE921515382	PA	ZVB1653	PA	TRUCK TRACTOR		2
Vehicle Maint. Violation: 393.9A-LTSIR Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit						6
Vehicle Maint. Violation: 393.9A-LTSI Lighting - Turn signal - Any inoperative on the rearmost vehicle. (OOS)						6 + 2 (OOS)
Vehicle Maint. Violation: 393.9A-LSLIWR Lighting - Stop lamps - Both inoperative when required to be on (OOS)						6 + 2 (OOS)
Vehicle Maint. Violation: 393.9A-LSLI Lighting - Stop lamps - Any inoperative.						6
Vehicle Maint. Violation: 393.9A-LIL Lighting - Identification lamp(s) inoperative						2
5/21/2025	PAG703514191	PA	AH30078	PA	TRUCK TRACTOR		2
5/20/2025	PAG709514049	PA	PWE5457	OH	TRUCK TRACTOR		2
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
4/28/2025	PAN309511808	PA	AH30087	PA	TRUCK TRACTOR		1
HOS Compliance Violation: 395.20BELDNV HOS (ELD) - The ELD display screen is not viewable by an authorized official without entering the CMV						5
4/15/2025	PAC603510510	PA	AH30070	PA	TRUCK TRACTOR		1
4/4/2025	NYD305801940	NY	AH30088	PA	TRUCK TRACTOR		1
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)
HOS Compliance Violation: 395.8(e)(1)PC HOS - False record of duty status driver improper use of Personal Conveyance - Not OOS						7
Vehicle Maint. Violation: 393.48A-BMBCBD Drum Brake - Missing/broken component(s)						4
Vehicle Maint. Violation: 396.3A1-BALAC Brake - Audible air leak from a brake chamber						4
4/1/2025	NYSPD3030700	NY	AH62226	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.9A-LBL Lighting - Backup lamp inoperative						6
4/1/2025	NYSPD3070559	NY	AH30084	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.9A-LFTSI Lighting - Front - Turn signal - inoperative						6
3/15/2025	MD0280007692	MD	AH30073	PA	TRUCK TRACTOR		1
Unsafe Driving Violation: 392.2-SLLS4 State/Local Laws - Speeding 15 or more miles per hour over the speed limit						10
1/28/2025	NYSPA3030258	NY	AH62226	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.45B2-B-AIR Air Brake - Hose/tubing damaged or not secured						4
1/22/2025	NYSPA3010892	NY	AH30084	PA	TRUCK TRACTOR		1
1/8/2025	NYSPE3040311	NY	AH62226	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.11A1-CSLRR Conspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997						3
Vehicle Maint. Violation: 393.9A-LSML Lighting - Side marker lamp(s) inoperative						2
10/16/2024	NYSPL3070079	NY	AH30077	PA	TRUCK TRACTOR		1
10/10/2024	PAE968428416	PA	AH30069	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.81 Horn inoperative						3
Vehicle Maint. Violation: 393.104(b) Damaged securement system/tiedowns (OOS)						1 + 2 (OOS)
10/8/2024	PAC208428204	PA	AH30079	PA	TRUCK TRACTOR		1
10/3/2024	PAE909427720	PA	AH30062	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 396.17(c) Operating a CMV without proof of a periodic inspection						4
7/16/2024	PAC604419848	PA	AH30069	PA	TRUCK TRACTOR		1
7/15/2024	PAE921419787	PA	AH30088	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.9(a) Inoperative Brake Lamps						6
Vehicle Maint. Violation: 393.75(c) Tire-other tread depth less than 2/32 of inch measured in a major tread groove						8
Vehicle Maint. Violation: 393.75(a) Flat tire or fabric exposed (OOS)						8 + 2 (OOS)
7/3/2024	PAE940418524	PA	AH30077	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.205(b) Stud/bolt holes elongated on wheels (OOS)						2 + 2 (OOS)
Vehicle Maint. Violation: 393.205(c) Wheel fasteners loose and/or missing (OOS)						2 + 2 (OOS)
Vehicle Maint. Violation: 396.3A1B Brakes (general) Explain:						4
Vehicle Maint. Violation: 393.45B2PC Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit						4
6/25/2024	PAE921417790	PA	AH30064	PA	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.207(b) Adjustable axle locking pins missing or not engaged						7
Vehicle Maint. Violation: 393.75(c) Tire-other tread depth less than 2/32 of inch measured in a major tread groove						8
HOS Compliance Violation: 395.24C2III Driver failed to manually add shipping document number						1
Vehicle Maint. Violation: 396.3(a)(1) Inspection, repair and maintenance of parts and accessories						2
Vehicle Maint. Violation: 393.9 Inoperable Required Lamp						2

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: 3/15/1989 (Safety Review)
Total Inspections: 36
- Total Inspections without Violations used in SMS: 11
- Total Inspections with Violations used in SMS: 25
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 06/27/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 10559

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 5/15/2026, updated monthly)

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

Most Recent Investigation: 3/15/1989 (Safety Review)	Total Inspections: 36 Total inspections without violations used in SMS: 11 Total inspections with violations used in SMS: 25	Total Crashes: 0*
3/15/1989 (Safety Review)	# Insp. OOS Driver Inspections 36 0.0% Vehicle Inspections 21 33.3% 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.

Downloads

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Average PU × Utilization Factor (as of 5/15/2026, 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.

39 Average PU × Utilization Factor = 39 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.

39 Average Power Units = 42 Current Power Units + 42 Power Units 6 Months Ago + 33 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# 10559 = 100% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
48,665 VMT per Average Power Unit = 1,897,936 VMT From Registration (MCS-150) ÷ 39 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/.