Company lists · Data refreshed September 2026

Top 25 Transit consulting firms worldwide

Name: Transit consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,818 companies tracked

RevenueBase identified 4,818 transit consulting firms worldwide as of September 2026 and tracks 172,369 professional contacts across them, including 55,328 with verified work emails. The United States is the largest market and London the largest hub.

This list covers transit consulting firms worldwide, 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 29, 2026. Country and city lists for transit consulting firms follow the table.

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 29, 2026 86% judged on-target in blind review

4,818Companies

172,369Contacts tracked

55,328Verified emails

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The 25 largest transit consulting firms worldwide

Ranked by team size

Top 25 of 4,818 transit consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to transit consulting 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	WSP In Canada	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 29, 2026	10001+	10,015 contacts →
	Indirect evidence “We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Source: RevenueBase Database · checked Sep 29, 2026
2	Toronto Transit Commission TTC	Partial evidence	Toronto, CanadaHQ checked Sep 29, 2026	10001+	7,742 contacts →
	Partial evidence “The Toronto Transit Commission has a rich history dating back to 1921.” Source: RevenueBase Database · checked Sep 29, 2026
3	CAF Construcciones Y Auxiliar DE Ferrocarriles	Partial evidence	Beasáin, SpainHQ checked Sep 29, 2026	10001+	6,489 contacts →
	Partial evidence “CAF is a global leader in comprehensive transportation systems, shaping the future of sustainable mobility.” Source: RevenueBase Database · checked Sep 29, 2026
4	Khatib & Alami	Indirect evidence	Downtown, PolandHQ checked Sep 29, 2026	5,001-10,000	5,792 contacts →
	Indirect evidence “Khatib & Alami (K&A) is a multidisciplinary design consultancy which operates primarily across the Middle East & Africa, Levant, Central and South-East Asia, and Europe.” Source: RevenueBase Database · checked Sep 29, 2026
5	Systra	Partial evidence	Paris, FranceHQ checked Sep 29, 2026	10001+	5,069 contacts →
	Partial evidence “SYSTRA is one of the world's leading engineering and consultancy groups specialising in public transport and mobility solutions.” Source: RevenueBase Database · checked Sep 29, 2026
6	MTR Corporation Limited 香港鐵路有限公司	Indirect evidence	Kowloon Bay, Hong KongHQ checked Sep 29, 2026	10001+	4,764 contacts →
	Indirect evidence “To Keep Cities Moving, MTR makes encounters happen and rendezvous for a more connected tomorrow.” Source: RevenueBase Database · checked Sep 29, 2026
7	INECO	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	5,001-10,000	4,669 contacts →
	Partial evidence “Ingeniería y consultoría de referencia en el ámbito de la movilidad sostenible y la transformación digital Englobada dentro del grupo del Ministerio de Transportes y Movilidad…” Source: RevenueBase Database · checked Sep 29, 2026
8	Michael Baker International	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 29, 2026	5,001-10,000	4,362 contacts →
	Partial evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 29, 2026
9	STV	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,556 contacts →
	Indirect evidence “STV offers professional services for the infrastructure that powers our lives.” Source: RevenueBase Database · checked Sep 29, 2026
10	Ratp DEV	Partial evidence	Paris, FranceHQ checked Sep 29, 2026	10001+	2,958 contacts →
	Partial evidence “RATP Dev is a subsidiary of the RATP Group, global leader in high-capacity urban rail and the world's third largest public transport operator.” Source: RevenueBase Database · checked Sep 29, 2026
11	First Transit	Partial evidence	Lombard, IL, United StatesHQ checked Sep 29, 2026	10001+	2,611 contacts →
	Partial evidence “First Transit was acquired in 2023 and is now Transdev.” Source: RevenueBase Database · checked Sep 29, 2026
12	VHB	Indirect evidence	Watertown, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,277 contacts →
	Indirect evidence “We are VHB.” Source: RevenueBase Database · checked Sep 29, 2026
13	Olsson	Indirect evidence	Lincoln, NE, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,108 contacts →
	Indirect evidence “Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.” Source: RevenueBase Database · checked Sep 29, 2026
14	Feedback Infra	Partial evidence	Gurgaon, IndiaHQ checked Sep 29, 2026	5,001-10,000	1,956 contacts →
	Partial evidence “Feedback Infra is India’s leading infrastructure services company with interests across sectors like transportation, energy and urban infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026
15	Rites LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,850 contacts →
	Indirect evidence “RITES Limited is a Navratna CPSE, under the aegis of the Ministry of Railways.” Source: RevenueBase Database · checked Sep 29, 2026
16	Consor	Strong evidence	United StatesHQ checked Sep 29, 2026	1,001-5,000	1,292 contacts →
	Strong evidence “Consor is a leading engineering and consulting firm advancing intelligent, future-ready infrastructure across transportation and water systems.” Source: RevenueBase Database · checked Sep 29, 2026
17	Movares	Partial evidence	Utrecht, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	1,213 contacts →
	Partial evidence “Movares is an engineering consultancy, providing solutions to capacity, safety, and integration problems in the areas of mobility, infrastructure and transportation systems.” Source: RevenueBase Database · checked Sep 29, 2026
18	Volkert, INC	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,199 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 29, 2026
19	Voyants Solutions Private Limited	Indirect evidence	Gurugram, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,144 contacts →
	Indirect evidence “At Voyants, we don't just design infrastructure, we sculpt the future.” Source: RevenueBase Database · checked Sep 29, 2026
20	Keolis Sverige AB	Indirect evidence	Stockholm, SwedenHQ checked Sep 29, 2026	5,001-10,000	1,119 contacts →
	Indirect evidence “Vi hämtar leriga förskolebarn efter utflykten, ser till att nattsuddarna kommer hem och plockar troget upp arbetspendlarna om mornarna.” Source: RevenueBase Database · checked Sep 29, 2026
21	LEA Associates South Asia Private Limited	Partial evidence	New Delhi, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,092 contacts →
	Partial evidence “also known as, is a premier engineering, planning and management consulting organization in India, operational since 1993.” Source: RevenueBase Database · checked Sep 29, 2026
22	GAI Consultants, INC	Strong evidence	Homestead, PA, United StatesHQ checked Sep 29, 2026	501-1,000	964 contacts →
	Strong evidence “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Source: RevenueBase Database · checked Sep 29, 2026
23	Monenco Iran Consulting Engineers	Indirect evidence	Tehran, IranHQ checked Sep 29, 2026	1,001-5,000	785 contacts →
	Indirect evidence “Monenco Iran was formed in 1973 as a joint venture between the private sector of Iran and Montreal Engineering Company of Canada.” Source: RevenueBase Database · checked Sep 29, 2026
24	PTV Group	Partial evidence	Karlsruhe, GermanyHQ checked Sep 29, 2026	501-1,000	783 contacts →
	Partial evidence “PTV Group provides software solutions and consulting services to empower mobility for a cleaner and smarter future.” Source: RevenueBase Database · checked Sep 29, 2026
25	MSV International, INC	Indirect evidence	Kenmore, WA, United StatesHQ checked Sep 29, 2026	501-1,000	718 contacts →
	Indirect evidence “MSV International Inc.(ISO 9001 : 2015 Certified Company) is a multidisciplinary consultancy firm and is registered as a corporation in the State of Washington, USA.” Source: RevenueBase Database · checked Sep 29, 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: transit consulting firms. 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 transit consulting firms.
Partial evidence: Its own public description names part of transit consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit consulting firms. 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 4,818 transit consulting firms worldwide

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Transit consulting firms worldwide at a glance

As of Sep 29, 2026

32.1%Verified-email coverage

35.8Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,728

11-50

1,302

51-200

484

201-500

150

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 transit consulting 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.
Coverage: Every country. Country and city lists for transit consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “transit consulting 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 transit consulting 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 transit consulting firms, and records with no verified work email.
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, 55,328 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 29, 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.

Transit consulting firms by location

34 lists · largest first

Every Transit consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 transit consulting 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 transit consulting firms are there worldwide?

RevenueBase identified 4,818 transit consulting firms worldwide 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?

WSP In Canada, headquartered in Montreal, tops this list with the largest team on record.

Which country has the most transit consulting firms?

The United States leads with 1,066 companies, followed by the United Kingdom (335) and Germany (269). Every transit consulting firms list by country and city is linked on this page.

Which city has the most transit consulting firms?

London leads with 89 headquartered companies, followed by Sao Paulo (53) and Paris (51).

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 55,328 verified decision-maker contacts tracked across these 4,818 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 29, 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.