Safety Measurement System - Complete SMS Profile (U.S. DOT# 1461505)

NORTH SUBURBAN TRANSPORTATION COMPANY INC

U.S. DOT#: 1461505

Address: 100 ASHBURTON AVE
WOBURN, MA 01801
Number of Vehicles: 48
Number of Drivers: 49
Number of Inspections: 9

Safety Rating & OOS Rates

(As of 02/03/2026 updated daily from SAFER )

SATISFACTORY

(Rating Date: 04/17/2023)

Out of Service Rates

Type	OOS %	National Avg %
Vehicle	0.0	23.2
Driver	0.0	6.4
Hazmat		4.4

Licensing and Insurance

(As of 02/03/2026 updated hourly from L&I )

Active For-Hire Authority
Type	Yes/No	MC#/MX#
Property	No
Passenger	No
Household Goods	No
Broker	No

BASIC Status (Public Passenger Carrier View)

Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending December 26, 2025

On-Road Performance
0 Measure 0% Percentile	Not Public	0 Measure 0% Percentile	0.09 Measure Less than 5 vehicle inspections with violations	0 Measure 0% Percentile	Not Public	0 Measure Less than 5 driver inspections
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 0 Safety Event Group: No Safety Event Grouping Avg. PU × UF: 48 Segment: Straight Carrier	Not Public	Driver Inspections: 3 with HOS Compliance Violations: 0 Safety Event Group: 3-10 relevant driver inspections	Vehicle Inspections: 9 with Vehicle Maint. Violations: 1 Safety Event Group: 5-10 relevant vehicle inspections	Driver Inspections: 3 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 3 with Driver Fitness Violations: 0 Safety Event Group: No Safety Event Grouping
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.

Carrier may be prioritized for an intervention action and roadside inspection. Denotes this carrier exceeds the FMCSA Intervention Threshold relative to its safety event grouping based upon roadside data and/or has been cited with one or more Acute/Critical Violations within the past 12 months during an investigation. Therefore, this carrier may be prioritized for an intervention action and roadside inspection.

Violation Summary

Violations: 1


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

393.9	Inoperable Required Lamp	1	0	2	Vehicle Maint.

Inspection History

Total Inspections: 9


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

10/2/2025	MAZS00002447	MA	LV666	MA	PASSENGER VAN		3
10/2/2025	MAZS00002448	MA	BU4	MA	SCHOOL BUS		3
8/19/2025	MAZS00002401	MA	BU6	MA	SCHOOL BUS		3
8/19/2025	MAZS00002402	MA	BU9	MA	SCHOOL BUS		3
8/19/2025	MAZS00002403	MA	BU7	MA	SCHOOL BUS		3
8/19/2025	MAZS00002404	MA	BU8	MA	SCHOOL BUS		3
6/12/2024	MADC00001736	MA	SB46734	MA	SCHOOL BUS		1
Vehicle Maint. Violation: 393.9 Inoperable Required Lamp						2
6/12/2024	MACU00003180	MA	SB2	MA	SCHOOL BUS		1
6/12/2024	MACU00003181	MA	1A8KA	MA	SCHOOL BUS		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: 2


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)

11/21/2024	MATBC0034190	MA	SB1A1AF	MA	0	0	Yes	No	1	1	1
4/9/2024	MATBC0032779	MA	SB1A6NH	MA	0	1	Yes	No	2	1	2

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: 4/13/2023 (Compliance Review)
Total Inspections: 9
- Total Inspections without Violations used in SMS: 8
- Total Inspections with Violations used in SMS: 1
Total Crashes* : 2

*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 Passenger Threshold Update Registration Info

Enforcement Cases

(Six years as of 02/03/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 1461505

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 12/26/2025, updated monthly)

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

Most Recent Investigation: 4/13/2023 (Compliance Review)	Total Inspections: 9 Total inspections without violations used in SMS: 8 Total inspections with violations used in SMS: 1	Total Crashes: 2*
4/13/2023 (Compliance Review) 3/15/2010 (Compliance Review)	# Insp. OOS Driver Inspections 3 0.0% Vehicle Inspections 9 0.0% Placardable HM Inspections 0 0.0% % Placardable HM Inspections 0.0%	Fatal Crashes 0 Injury Crashes 1 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 12/26/2025, 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.

48 Average PU × Utilization Factor = 48 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.

48 Average Power Units = 48 Current Power Units + 48 Power Units 6 Months Ago + 48 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: Straight
Straight trucks/other vehicles constituting more than 30% of the total PU
U.S. DOT# 1461505 = 100% Straight trucks/other vehicles
Determine VMT per Average Power Unit
0 VMT per Average Power Unit = 20 VMT From Registration (MCS-150) ÷ 48 Average Power Units

Based on Step 1 and 2 calculate the Utilization Factor

Straight Segment
Meets Criteria	VMT per Avgerage PU	Utilization Factor
	< 20,000	1
	20,000 – 60,000	1 = VMT per PU ÷ 20,000
	60,000 – 200,000	3
	> 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/.