Company lists · Data refreshed September 2026

Top 25 Transportation associations based in Washington, United States

Name: Transportation associations based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 45 companies tracked

RevenueBase identified 45 transportation associations headquartered in Washington, United States as of September 2026 and tracks 5,504 professional contacts across them, including 1,005 with verified work emails. Washington is the largest hub.

This list covers transportation associations headquartered in Washington, 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 19, 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 19, 2026 86% judged on-target in blind review

45Companies

5,504Contacts tracked

1,005Verified emails

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The 25 largest transportation associations based in Washington, United States

Ranked by team size

Top 25 of 45 transportation associations based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transportation associations: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Transport Topics	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	789 contacts →
	Partial evidence “The news leader in freight transportation.” Source: RevenueBase Database · checked Sep 19, 2026
2	American Public Transportation Association	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	161 contacts →
	Strong evidence “The American Public Transportation Association (APTA) is a nonprofit international association of more than 1,600 public and private member organizations, engaged in the areas of…” Source: RevenueBase Database · checked Sep 19, 2026
3	Aashto American Association Of State Highway And Transportation Officials	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	159 contacts →
	Partial evidence “AASHTO works to educate the public and key decision makers about the critical role that transportation plays in securing a good quality of life and sound economy for our nation.” Source: RevenueBase Database · checked Sep 19, 2026
4	ITE A Community Of Transportation Professionals	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	155 contacts →
	Strong evidence “Founded in 1930, ITE is an international membership association of transportation professionals who work to improve safety and mobility for all transportation system users and…” Source: RevenueBase Database · checked Sep 19, 2026
5	Association Of American Railroads	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	90 contacts →
	Strong evidence “America's freight railroads operate the safest, most efficient, cost-effective and environmentally sound freight transportation system in the world, and at the Association of…” Source: RevenueBase Database · checked Sep 19, 2026
6	Foursquare ITP	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	80 contacts →
	Partial evidence “Foursquare ITP is a multi-modal transportation planning firm focused on providing innovative transportation solutions that are practical, focused, and implementable.” Source: RevenueBase Database · checked Sep 19, 2026
7	WTS International	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	56 contacts →
	Partial evidence “Founded in 1977, WTS is an international organization dedicated to the professional advancement of women in transportation.” Source: RevenueBase Database · checked Sep 19, 2026
8	Intelligent Transportation Society Of America	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	51 contacts →
	Partial evidence “The Intelligent Transportation Society of America (ITS America) is the nation’s leading advocate for the technological modernization of our transportation system by focusing on…” Source: RevenueBase Database · checked Sep 19, 2026
9	Community Transportation Association Of America Ctaa	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	45 contacts →
	Strong evidence “The Community Transportation Association of America (CTAA) and its members believe mobility is a basic human right.” Source: RevenueBase Database · checked Sep 19, 2026
10	American Road & Transportation Builders Association Artba	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	43 contacts →
	Strong evidence “Since 1902, the members of the Washington, D.C-based American Road & Transportation Builders Association (ARTBA) have designed, built and continue to manage a national…” Source: RevenueBase Database · checked Sep 19, 2026
11	IBTTA	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “The International Bridge, Tunnel and Turnpike Association (IBTTA) is the worldwide association representing toll facility owners and operators and the businesses that serve them.” Source: RevenueBase Database · checked Sep 19, 2026
12	American BUS Association	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “The American Bus Association (ABA) is a trade association founded in 1926 representing the North American private bus, group travel, and tourism industries.” Source: RevenueBase Database · checked Sep 19, 2026
13	ENO Center For Transportation	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “Eno is an independent nonprofit that shapes public debate on critical multimodal transportation issues and builds a network of innovative and diverse transportation professionals.” Source: RevenueBase Database · checked Sep 19, 2026
14	American Ambulance Association	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	21 contacts →
	Partial evidence “Founded in 1979, the American Ambulance Association represents hundreds of ambulance services across the United States that participate in emergency and nonemergency care and…” Source: RevenueBase Database · checked Sep 19, 2026
15	Transportation For America	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Transportation for America is an advocacy organization made up of local, regional and state leaders who envision a transportation system that safely, affordably and conveniently…” Source: RevenueBase Database · checked Sep 19, 2026
16	The Airforwarders Association	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	11 contacts →
	Partial evidence “The Airforwarders Association represents hundreds of U.S companies dedicated to moving cargo through the supply chain on all modes of transport.” Source: RevenueBase Database · checked Sep 19, 2026
17	Technology & Maintenance Council TMC Of American Trucking Associations, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “ATA's Technology & Maintenance Council (TMC) is a diverse group of industry professionals who work together to improve truck equipment and technology.” Source: RevenueBase Database · checked Sep 19, 2026
18	AGTC	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Agriculture Transportation Coalition "The principal voice of agriculture exporters in U.S.” Source: RevenueBase Database · checked Sep 19, 2026
19	Abe's Transportation INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
20	Cargo Airline Association	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “The Cargo Airline Association (CAA) is located in Washington, D.C.” Source: RevenueBase Database · checked Sep 19, 2026
21	Flex Association	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Flex is the voice of the app-based economy, representing America’s leading app-based rideshare and delivery platforms and the people who count on them.” Source: RevenueBase Database · checked Sep 19, 2026
22	American Highway Users Alliance	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “The American Highway Users Alliance is a nonprofit 501 (c)(6) advocacy organization serving as the united voice of the transportation community promoting safe, uncongested…” Source: RevenueBase Database · checked Sep 19, 2026
23	Travelers United	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “The mission of Travelers United to identify and promote in Washington, D.C, and beyond ways to improve and enhance travel for consumers across all modes of travel - airlines…” Source: RevenueBase Database · checked Sep 19, 2026
24	National Operations Center Of Excellence	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “The National Operations Center of Excellence empowers the transportation systems management & operations (TSMO) community by enhancing their knowledge, skills, and abilities.” Source: RevenueBase Database · checked Sep 19, 2026
25	Conference Of Minority Transportation Officials	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: transportation associations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names transportation associations.
Partial evidence: Its own public description names part of transportation associations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transportation associations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 45 transportation associations based in Washington, United States

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Transportation associations based in Washington, United States at a glance

As of Sep 19, 2026

18.3%Verified-email coverage

122.3Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

10001+

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 45 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 transportation associations, 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 Washington, United States whose own description of what they do matches “transportation associations”. 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 transportation associations), 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 transportation associations, and records with no verified work email. Companies headquartered outside Washington 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, 1,005 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 19, 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.

Transportation associations by metro in the United States

Transportation associations in Washington45
Transportation associations in Houston30
Transportation associations in Chicago26

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 transportation associations, 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 transportation associations are there based in Washington, United States?

RevenueBase identified 45 transportation associations headquartered in Washington, 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?

Transport Topics, headquartered in Washington, tops this list with the largest team on record.

Which city has the most transportation associations?

Washington leads with 45 headquartered companies, followed by Houston (30) and Chicago (26).

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 1,005 verified decision-maker contacts tracked across these 45 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 19, 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.