Company lists · Data refreshed November 2026

Top 25 Transportation consulting services based in the United States

Name: Transportation consulting services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 1,690 companies tracked

RevenueBase identified 1,690 company matches for transportation consulting services associated with the United States as of November 2026 and tracks 33,068 professional contacts across them, including 14,144 with verified work emails. New York is the largest hub.

This list covers company matches for transportation consulting services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

1,690Companies

33,068Contacts tracked

14,144Verified emails

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The 25 largest transportation consulting services based in the United States

Ranked by team size

Top 25 of 1,690 company matches for transportation consulting services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	GPI Greenman-Pedersen, INC	Exact match	Melville, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,401 contacts →
	Exact match “With a staff of over 1,800 professionals, Greenman-Pedersen, Inc.(GPI) is a leading engineering consulting firm that specializes in the innovative design and construction of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	GAI Consultants, INC	Exact match	Homestead, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,027 contacts →
	Exact match “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Hallcon Corporation	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	5,001-10,000	881 contacts →
	Exact match “Hallcon is a transportation and infrastructure services company focused on turnkey solutions for clients such as technology companies, manufacturers, railroads, universities…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	DUDEK	Exact match	Encinitas, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	829 contacts →
	Exact match “Dudek is an environmental, planning, and engineering consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Transystems	Exact match	Kansas City, MO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	771 contacts →
	Exact match “TranSystems plans, designs, and oversees construction to enhance the transportation networks and infrastructure that makes communities more livable today and in the future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Carter Express, INC	Exact match	Anderson, TN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	507 contacts →
	Exact match “Since being founded in 1983, Carter Express has been delivering world-class customer service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	SRF Consulting Group	Exact match	Minneapolis, NE, United StatesHQ recorded Nov 6, 2026	201-500	486 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Lockwood, Andrews & Newnam, Inc. LAN	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	201-500	483 contacts →
	Exact match “Lockwood, Andrews & Newnam, Inc.(LAN) is a full-service consulting firm offering planning, engineering and program management services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Fehr & Peers	Exact match	Walnut Creek, CA, United StatesHQ recorded Nov 6, 2026	201-500	477 contacts →
	Exact match “We are a transportation planning and engineering firm with 24 offices and over 400 staff nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Infrastructure Consulting & Engineering	Exact match	West Columbia, LA, United StatesHQ recorded Nov 6, 2026	501-1,000	440 contacts →
	Exact match “Founded in 2005, Infrastructure Consulting & Engineering, LLC (ICE) provides transportation consulting and engineering services across the Southeast.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Kittelson & Associates, INC	Exact match	Portland, CA, United StatesHQ recorded Nov 6, 2026	201-500	433 contacts →
	Exact match “We solve complex transportation problems to improve people's everyday lives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Burns Engineering, INC	Exact match	Philadelphia, PA, United StatesHQ recorded Nov 6, 2026	201-500	384 contacts →
	Exact match “Burns is a nationally respected provider of specialized engineering services, bringing highly-technical, sought-after engineering expertise to transportation, critical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Metric Engineering	Exact match	Miami, FL, United StatesHQ recorded Nov 6, 2026	201-500	360 contacts →
	Exact match “Metric was founded in 1976 on the principle of providing personalized consulting engineering services "done right the first time and every time." Today, we are among the top…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	LSA	Exact match	Irvine, CA, United StatesHQ recorded Nov 6, 2026	201-500	360 contacts →
	Exact match “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Oliver Wyman Vector	Exact match	Westlake, TX, United StatesHQ recorded Nov 6, 2026	51-200	317 contacts →
	Exact match “Oliver Wyman Vector offers top-tier technical consulting and services to the aviation, aerospace, defense, and rail sectors worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	AFS Logistics	Exact match	Shreveport, SC, United StatesHQ recorded Nov 6, 2026	201-500	311 contacts →
	Exact match “AFS helps manufacturers, distributors, retailers, and other shippers improve transportation visibility, control costs, and optimize shipping performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	PGH Wong Engineering, INC	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	201-500	289 contacts →
	Exact match “Founded in 1985, PGH Wong Engineering, Inc.(PGH Wong) is one of the nation’s leading firms in the transit industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	ATCS	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 2026	201-500	284 contacts →
	Exact match “ATCS is a leading engineering and management consulting firm offering comprehensive solutions across a wide range of fields, including transportation, traffic planning…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Matrix Design Group, INC	Exact match	Colorado Springs, AL, United StatesHQ recorded Nov 6, 2026	201-500	278 contacts →
	Exact match “Matrix Design Group is an employee-owned planning, engineering, and consulting firm that helps communities, governments, and organizations plan, design, and deliver the systems…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Serco INC	Exact match	Ellenboro, WV, United StatesHQ recorded Nov 6, 2026	n/a	275 contacts →
	Exact match “SERCO INC is a company based out of PO BOX 189, ELLENBORO, West Virginia, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Cambridge Systematics, INC	Exact match	Medford, NY, United StatesHQ recorded Nov 6, 2026	201-500	270 contacts →
	Exact match “We are transportation specialists, dedicated to ensuring that transportation investments deliver the best possible results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Mcfarland Johnson	Exact match	Binghamton, FL, United StatesHQ recorded Nov 6, 2026	201-500	252 contacts →
	Exact match “McFarland Johnson is an employee-owned, multi-disciplined consulting firm, providing innovative and economical solutions to engineering, planning and environmental service needs…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Infrastructure Engineering INC	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	201-500	226 contacts →
	Exact match “Infrastructure Engineering Inc.(IEI) is a majority African American-owned, multi-disciplinary consulting firm with offices in eight states that delivers design engineering…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	TPD	Exact match	Pottstown, PA, United StatesHQ recorded Nov 6, 2026	201-500	225 contacts →
	Exact match “We're in the business of moving things forward: projects, communities, careers, and relationships.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Avairpros	Exact match	Naples, GA, United StatesHQ recorded Nov 6, 2026	201-500	221 contacts →
	Exact match “AvAirPros assists Airlines and Airport Operators by serving as an Airline Liaison, Technical Representative, Program/Project Management, Consulting or Advisory role.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “transportation consulting services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,690 transportation consulting services based in the United States

See the full list, filter by size, metro and specialty, and access 14,144 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Transportation consulting services based in the United States at a glance

As of Nov 6, 2026

42.8%Verified-email coverage

19.6Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

996

11-50

448

51-200

164

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,690 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “transportation consulting services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 14,144 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Transportation consulting services by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “transportation consulting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many transportation consulting services are there based in the United States?

RevenueBase identified 1,690 company matches for transportation consulting services associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

GPI Greenman-Pedersen, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most transportation consulting services?

New York leads with 48 company records, followed by Houston (38) and Atlanta (35).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 14,144 professional contacts with verified work emails tracked across these 1,690 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.