Company lists · Data refreshed September 2026

Top 25 Urban traffic engineering firms based in the United States

RevenueBase identified 1,167 urban traffic engineering firms headquartered in the United States as of September 2026 and tracks 51,679 professional contacts across them, including 25,521 with verified work emails. Houston is the largest hub.

This list covers urban traffic engineering firms 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 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
1,167Companies
51,679Contacts tracked
25,521Verified emails
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The 25 largest urban traffic engineering firms based in the United States

Ranked by team size
Top 25 of 1,167 urban traffic engineering firms based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to urban traffic engineering firms: 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 evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 20261,001-5,0003,067 contacts →

Partial evidence

“As a global engineering firm, we design infrastructure solutions that connect and elevate communities.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceWatertown, MA, United StatesHQ checked Sep 19, 20261,001-5,0002,277 contacts →

Indirect evidence

“We are VHB.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceHouston, TX, United StatesHQ checked Sep 19, 20261,001-5,0001,298 contacts →

Indirect evidence

“Welcome to Walter P Moore!”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceMobile, AL, United StatesHQ checked Sep 19, 20261,001-5,0001,199 contacts →

Indirect evidence

“Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 19, 20261,001-5,0001,053 contacts →

Indirect evidence

“Forge ahead.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceRichardson, TX, United StatesHQ checked Sep 19, 2026n/a939 contacts →

Indirect evidence

“ETC is the cornerstone that brings together all the moving elements of today’s multimodal transportation environment - systems, data, people, and vehicles – to streamline…”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceChicago, IL, United StatesHQ checked Sep 19, 20261,001-5,000923 contacts →

Partial evidence

“RoadSafe is the national leader in traffic safety services and products.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceKansas City, MO, United StatesHQ checked Sep 19, 20261,001-5,000850 contacts →

Indirect evidence

“TranSystems plans, designs, and oversees construction to enhance the transportation networks and infrastructure that makes communities more livable today and in the future.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceHummelstown, PA, United StatesHQ checked Sep 19, 20261,001-5,000824 contacts →

Partial evidence

“At Flagger Force, we believe that keeping our communities moving goes further than traffic control.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceEncinitas, CA, United StatesHQ checked Sep 19, 2026501-1,000795 contacts →

Partial evidence

“Dudek is an environmental, planning, and engineering consulting firm.”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceLong Beach, CA, United StatesHQ checked Sep 19, 20261,001-5,000765 contacts →

Partial evidence

“Providing Solutions for Work Zone Safety TMI specializes in providing our customers, employees and the public a safe work zone while maintaining an efficient flow of traffic.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceIselin, NJ, United StatesHQ checked Sep 19, 20261,001-5,000762 contacts →

Indirect evidence

“This page is now closed.”

Source: RevenueBase Database · checked Sep 19, 2026
13Partial evidenceChicago, IL, United StatesHQ checked Sep 19, 2026501-1,000674 contacts →

Partial evidence

“HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceRaleigh, NC, United StatesHQ checked Sep 19, 2026501-1,000555 contacts →

Partial evidence

“McAdams is a full-service civil engineering, land planning, landscape architecture, transportation, and geomatics firm headquartered in Raleigh, North Carolina with offices across…”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceBellevue, WA, United StatesHQ checked Sep 19, 2026501-1,000547 contacts →

Indirect evidence

“For more than 60 years, it has been the quality of our people that defines the DOWL difference.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceHoffman Estates, IL, United StatesHQ checked Sep 19, 2026201-500540 contacts →

Partial evidence

“Walker Consultants provides planning, design, engineering, forensics, restoration and consulting for the built environment.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceAustin, TX, United StatesHQ checked Sep 19, 2026201-500530 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
18Strong evidenceSan Jose, CA, United StatesHQ checked Sep 19, 2026501-1,000489 contacts →

Strong evidence

“Mark Thomas provides planning, civil and structural engineering, construction management, land surveying, landscape architecture and urban design, and district management for…”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 19, 2026201-500471 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 19, 2026
20Indirect evidenceEau Claire, WI, United StatesHQ checked Sep 19, 2026201-500458 contacts →

Indirect evidence

“In 1959, Owen Ayres founded Ayres Associates atop a steadfast foundation of honesty, innovation, and good old-fashioned hard work – and a vision for a firm that revolved around…”

Source: RevenueBase Database · checked Sep 19, 2026
21Partial evidenceWalnut Creek, CA, United StatesHQ checked Sep 19, 2026201-500448 contacts →

Partial evidence

“We are a transportation planning and engineering firm with 24 offices and over 400 staff nationwide.”

Source: RevenueBase Database · checked Sep 19, 2026
22Partial evidenceSan Diego, CA, United StatesHQ checked Sep 19, 2026201-500446 contacts →

Partial evidence

“RICK is an award-winning planning, design, and engineering firm.”

Source: RevenueBase Database · checked Sep 19, 2026
23Partial evidenceTuscaloosa, AL, United StatesHQ checked Sep 19, 2026201-500442 contacts →

Partial evidence

“Founded in 1964, TTL is an engineering design firm focused on delivering integrated infrastructure solutions for public and private clients.”

Source: RevenueBase Database · checked Sep 19, 2026
24Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 19, 2026201-500434 contacts →

Partial evidence

“McCormick Taylor is a full-service civil engineering firm providing creative design, planning, and environmental solutions to the challenges of everyday life.”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidenceChicago, IL, United StatesHQ checked Sep 19, 2026201-500432 contacts →

Indirect evidence

“In 1979, Collins Engineers, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 1,167 urban traffic engineering firms based in the United States

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Urban traffic engineering firms based in the United States at a glance

As of Sep 19, 2026
49.4%Verified-email coverage
44.3Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
490
11-50
388
51-200
208
201-500
44
501-1,000
18
1,001-5,000
16
5,001-10,000
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 1,167 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 urban traffic engineering firms, 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 “urban traffic engineering firms”. 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 urban traffic engineering firms), 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 urban traffic engineering firms, 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, 25,521 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.

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 urban traffic engineering firms, 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 urban traffic engineering firms are there based in the United States?

RevenueBase identified 1,167 urban traffic engineering firms 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?

TYLIN, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most urban traffic engineering firms?

Houston leads with 24 headquartered companies, followed by New York (24) and Miami (23).

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 25,521 verified decision-maker contacts tracked across these 1,167 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.