Company lists · Data refreshed September 2026

Top 25 Congestion management consultants based in the United States

Name: Congestion management consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 434 companies tracked

RevenueBase identified 434 congestion management consultants headquartered in the United States as of September 2026 and tracks 8,303 professional contacts across them, including 3,863 with verified work emails. New York is the largest hub.

This list covers congestion management consultants 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 27, 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 27, 2026 86% judged on-target in blind review

434Companies

8,303Contacts tracked

3,863Verified emails

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The 25 largest congestion management consultants based in the United States

Ranked by team size

Top 25 of 434 congestion management consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to congestion management consultants: 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	SRF Consulting Group	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 27, 2026	201-500	471 contacts →
	Indirect evidence “SRF Consulting Group is a full-service consulting firm with a broad base of award-winning services, including- Transportation and Transit Planning - Community and Land Use…” Source: RevenueBase Database · checked Sep 27, 2026
2	Kittelson & Associates, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 27, 2026	201-500	411 contacts →
	Indirect evidence “We solve complex transportation problems to improve people's everyday lives.” Source: RevenueBase Database · checked Sep 27, 2026
3	LSA	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 27, 2026	201-500	332 contacts →
	Indirect evidence “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Source: RevenueBase Database · checked Sep 27, 2026
4	Altus Traffic Management	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	201-500	300 contacts →
	Indirect evidence “At ALTUS Traffic USA, we are defined by our 24/7 leadership in establishing safer communities and roadways in the US and abroad.” Source: RevenueBase Database · checked Sep 27, 2026
5	Cambridge Systematics, INC	Indirect evidence	Medford, MA, United StatesHQ checked Sep 27, 2026	201-500	263 contacts →
	Indirect evidence “We are transportation specialists, dedicated to ensuring that transportation investments deliver the best possible results.” Source: RevenueBase Database · checked Sep 27, 2026
6	ATCS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 27, 2026	201-500	262 contacts →
	Partial evidence “ATCS is a leading engineering and management consulting firm offering comprehensive solutions across a wide range of fields, including transportation, traffic planning…” Source: RevenueBase Database · checked Sep 27, 2026
7	Felsburg Holt & Ullevig	Indirect evidence	Greenwood Village, CO, United StatesHQ checked Sep 27, 2026	51-200	197 contacts →
	Indirect evidence “Felsburg Holt & Ullevig is a consulting firm specializing in transportation planning, traffic engineering, civil engineering design, water resources, and environmental services.” Source: RevenueBase Database · checked Sep 27, 2026
8	Transpo Group	Indirect evidence	Kirkland, WA, United StatesHQ checked Sep 27, 2026	51-200	193 contacts →
	Indirect evidence “Today’s project challenges require world class expertise, innovative approaches, and the knowledge to effectively deliver cost-effective solutions.” Source: RevenueBase Database · checked Sep 27, 2026
9	DKS Associates	Indirect evidence	Portland, OR, United StatesHQ checked Sep 27, 2026	51-200	192 contacts →
	Indirect evidence “Our work helps clients explore options, make sound decisions, and build a transformative future.” Source: RevenueBase Database · checked Sep 27, 2026
10	Wells Associates	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 27, 2026	n/a	183 contacts →
	Indirect evidence “For 30 years, our professionals have created and implemented sustainable, cost-effective transportation solutions for commercial, residential, governmental, and institutional…” Source: RevenueBase Database · checked Sep 27, 2026
11	Gcw, INC	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 27, 2026	51-200	168 contacts →
	Indirect evidence “GCW is a leading provider of a complete range of services related to civil engineering (traffic and transportation engineering, land planning, water, wastewater, hydraulics, flood…” Source: RevenueBase Database · checked Sep 27, 2026
12	Nelson Nygaard Consulting Associates	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	51-200	162 contacts →
	Indirect evidence “Nelson\Nygaard Consulting Associates, Inc.” Source: RevenueBase Database · checked Sep 27, 2026
13	American Traffic Solutions	Indirect evidence	Mesa, AZ, United StatesHQ checked Sep 27, 2026	501-1,000	155 contacts →
	Indirect evidence “American Traffic Solutions became Verra Mobility in 2018.” Source: RevenueBase Database · checked Sep 27, 2026
14	Patel, Greene & Associates, LLC PGA	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 27, 2026	51-200	151 contacts →
	Indirect evidence “Patel, Greene and Associates (PGA) is a leader in innovative transportation engineering and planning.” Source: RevenueBase Database · checked Sep 27, 2026
15	Avenue Consultants	Partial evidence	Taylorsville, UT, United StatesHQ checked Sep 27, 2026	51-200	131 contacts →
	Partial evidence “Avenue Consultants is a specialized transportation and land development engineering and planning firm that provides innovative and professional services to clients in the public…” Source: RevenueBase Database · checked Sep 27, 2026
16	LEA Elliott, INC	Indirect evidence	Irving, TX, United StatesHQ checked Sep 27, 2026	51-200	113 contacts →
	Indirect evidence “Lea+Elliott is a transportation consulting firm offering a broad range of services for clients worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
17	Corre, INC	Indirect evidence	Madison, WI, United StatesHQ checked Sep 27, 2026	51-200	98 contacts →
	Indirect evidence “CORRE is a full-service transportation engineering firm offering large-firm capabilities with small-firm attitude.” Source: RevenueBase Database · checked Sep 27, 2026
18	Gorove Slade	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 27, 2026	51-200	89 contacts →
	Indirect evidence “Founded in 1979, Gorove Slade Associates, Inc.” Source: RevenueBase Database · checked Sep 27, 2026
19	Davenport	Indirect evidence	Winston-salem, NC, United StatesHQ checked Sep 27, 2026	51-200	86 contacts →
	Indirect evidence “DAVENPORT is a leading engineering, design, and consulting firm focused on providing transportation and specialty services such as environmental engineering to clients throughout…” Source: RevenueBase Database · checked Sep 27, 2026
20	Hvea Engineers	Indirect evidence	Beacon, NY, United StatesHQ checked Sep 27, 2026	51-200	83 contacts →
	Indirect evidence “A recognized leader, HVEA Engineers specializes in the comprehensive design and construction inspection of transportation infrastructure projects throughout the Hudson Valley and…” Source: RevenueBase Database · checked Sep 27, 2026
21	Transmart	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	81 contacts →
	Indirect evidence “Transportation is not just a branch at TranSmart, it’s our focus.” Source: RevenueBase Database · checked Sep 27, 2026
22	Arellano Associates	Indirect evidence	Chino Hills, CA, United StatesHQ checked Sep 27, 2026	51-200	73 contacts →
	Indirect evidence “Established in 1994, Arellano Associates (AA) is a specialized technology, communications and public outreach firm focusing on public infrastructure, transportation and community…” Source: RevenueBase Database · checked Sep 27, 2026
23	CR Associates	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	11-50	68 contacts →
	Indirect evidence “Mobility Solutions for Our Changing World As one of Southern California's foremost planning and design consulting firms, CR Associates (CRA) brings fresh vision to the…” Source: RevenueBase Database · checked Sep 27, 2026
24	Marlin Engineering INC Marlin	Indirect evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 27, 2026	51-200	68 contacts →
	Indirect evidence “MARLIN Now IMEG is an award-winning transportation firm delivering solutions that strengthen communities and support sustainable growth and local economic development.” Source: RevenueBase Database · checked Sep 27, 2026
25	KPG	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 27, 2026	51-200	66 contacts →
	Indirect evidence “KPG was initially formed in 1990 by a team of engineers, architects, landscape architects, and urban designers committed to and focused on community-driven public projects.” Source: RevenueBase Database · checked Sep 27, 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: congestion management consultants. 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 congestion management consultants.
Partial evidence: Its own public description names part of congestion management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name congestion management consultants. 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 434 congestion management consultants based in the United States

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Congestion management consultants based in the United States at a glance

As of Sep 27, 2026

46.5%Verified-email coverage

19.1Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

245

11-50

128

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 434 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 congestion management consultants, 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 “congestion management consultants”. 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 congestion management consultants), 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 congestion management consultants, 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, 3,863 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 27, 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 congestion management consultants, 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 congestion management consultants are there based in the United States?

RevenueBase identified 434 congestion management consultants 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?

SRF Consulting Group, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most congestion management consultants?

New York leads with 12 headquartered companies, followed by Houston (11) and Irvine (11).

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 3,863 verified decision-maker contacts tracked across these 434 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 27, 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.