Company lists · Data refreshed September 2026

Top 16 Vehicle compliance services based in the United States

RevenueBase identified 99 vehicle compliance services headquartered in the United States as of September 2026 and tracks 396 professional contacts across them, including 104 with verified work emails. Sacramento is the largest hub.

This list covers vehicle compliance services headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
99Companies
396Contacts tracked
104Verified emails
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The 16 largest vehicle compliance services based in the United States

Ranked by team size
Top 16 of 99 vehicle compliance services based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to vehicle compliance services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceIrving, TX, United StatesHQ checked Sep 21, 2026201-50082 contacts →

Partial evidence

“DOT Compliance Group, LLC was founded by a group of DOT compliance and IT experts to serve the trucking industry with an automated and affordable program to meet Federal Motor…”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceBrea, CA, United StatesHQ checked Sep 21, 202651-20038 contacts →

Partial evidence

“Since 1984, we have been designing, implementing, operating and servicing various types of motor vehicle emissions and technical/safety inspection programs.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceMeridian, ID, United StatesHQ checked Sep 21, 202611-5032 contacts →

Partial evidence

“Transportation Compliance Services offers FMCSA & DOT compliance for trucking companies looking for drug & alcohol testing, unified carrier registration (UCR), driver file…”

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceBoise, ID, United StatesHQ checked Sep 21, 202651-20021 contacts →

Partial evidence

“US Compliance Services is a company based out of BOISE, IDAHO, United States.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceRoseville, CA, United StatesHQ checked Sep 21, 20261-1013 contacts →

Indirect evidence

“ECO, Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceGreensboro, NC, United StatesHQ checked Sep 21, 20261-107 contacts →

Partial evidence

“Here at Vallon Consulting, we put you in direct contact with experts that will provide you with world-class compliance services for your fleet.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceHouston, TX, United StatesHQ checked Sep 21, 202611-506 contacts →

Partial evidence

“Since 1980, TMTC has helped fleets stay compliant, operational, and off the DMV’s radar.”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceNorman, OK, United StatesHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“With over 40 years of combined experience, dotprocessagents.com offers permit and compliance services for the trucking industry.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceBirmingham, AL, United StatesHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“All About Trucks is a transportation/trucking/railroad company based out of 2400 3rd Ave S, Birmingham, Alabama, United States.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceIslip Terrace, NY, United StatesHQ checked Sep 21, 202611-503 contacts →

Partial evidence

“We are a Transportation Compliance company that is hired by motor carriers to help get them in complete compliance with all the regulations set forth by the US Department of…”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceLos Altos, CA, United StatesHQ checked Sep 21, 20261-103 contacts →

Indirect evidence

“Simplifying the smog check process for California.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceAbilene, TX, United StatesHQ checked Sep 21, 20261-103 contacts →

Indirect evidence

“4Sight provides safe, professional, turnkey emissions testing services.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceWoburn, MA, United StatesHQ checked Sep 21, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
14Strong evidenceNashville, TN, United StatesHQ checked Sep 21, 202611-501 contacts →

Strong evidence

“5 Star Compliance has more than 100 years of combined experience helping transportation companies navigate the treacherous and tedious landscape of tax, driver, and vehicle…”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceQuarryville, PA, United StatesHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“If you own one car or truck or a fleet of cars & trucks we can keep you running gr8.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceSacramento, CA, United StatesHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026

Showing 16 of 99 vehicle compliance services based in the United States

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Vehicle compliance services based in the United States at a glance

As of Sep 21, 2026
26.3%Verified-email coverage
4.0Average contacts per company
1-10Median size (employees)
3.0%Largest-city concentration · Sacramento
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
58
11-50
27
51-200
8
201-500
2

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 99 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among vehicle compliance services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “vehicle compliance services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names vehicle compliance services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among vehicle compliance services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 104 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names vehicle compliance services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many vehicle compliance services are there based in the United States?

RevenueBase identified 99 vehicle compliance services headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

DOT Compliance Group, headquartered in Irving, tops this list with the largest team on record.

Which city has the most vehicle compliance services?

Sacramento leads with 3 headquartered companies, followed by Austin (2) and Corona (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 104 verified decision-maker contacts tracked across these 99 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.