Company lists · Data refreshed September 2026

Top 22 Rail safety technology companies based in France

Name: Rail safety technology companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 46 companies tracked

RevenueBase identified 46 rail safety technology companies headquartered in France as of September 2026 and tracks 3,707 professional contacts across them, including 1,420 with verified work emails. Paris is the largest hub.

This list covers rail safety technology companies headquartered in France, 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 17, 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 17, 2026 86% judged on-target in blind review

46Companies

3,707Contacts tracked

1,420Verified emails

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The 22 largest rail safety technology companies based in France

Ranked by team size

Top 22 of 46 rail safety technology companies based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to rail safety technology companies: 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	TSO	Partial evidence	Chelles, FranceHQ checked Sep 17, 2026	1,001-5,000	1,109 contacts →
	Partial evidence “With more than 90 years’ experience in France and internationally, TSO (subsidiary of NGE) puts its expertise to work on: • rail services resumed between Oloron and Bedous • track…” Source: RevenueBase Database · checked Sep 17, 2026
2	Vossloh Switch Systems	Partial evidence	Rueil-malmaison, FranceHQ checked Sep 17, 2026	1,001-5,000	603 contacts →
	Partial evidence “The Vossloh Switch Systems division develops and manufactures switch systems for rail infrastructure, which must be individually adapted to the customer and the project.” Source: RevenueBase Database · checked Sep 17, 2026
3	Geismar Rail Industry Technologies & Services	Partial evidence	Colmar, FranceHQ checked Sep 17, 2026	501-1,000	327 contacts →
	Partial evidence “For almost a century, teams from Geismar have been bringing their passion and expertise to the development of rail transport.” Source: RevenueBase Database · checked Sep 17, 2026
4	SCLE	Partial evidence	Toulouse, FranceHQ checked Sep 17, 2026	201-500	212 contacts →
	Partial evidence “Devices and systems for high-voltage substations and rail signaling” Source: RevenueBase Database · checked Sep 17, 2026
5	Clearsy	Partial evidence	Aix En Provence, FranceHQ checked Sep 17, 2026	51-200	141 contacts →
	Partial evidence “CLEARSY specializes in designing safety critical systems.” Source: RevenueBase Database · checked Sep 17, 2026
6	Colas Rail Infra Services	Partial evidence	Louveciennes, FranceHQ checked Sep 17, 2026	201-500	122 contacts →
	Partial evidence “Colas Rail Infra Services (CRIS) est une filiale de Colas Rail, créée en 2015, dont le cœur de métier est la mise en sécurité des chantiers ferroviaires.” Source: RevenueBase Database · checked Sep 17, 2026
7	Saferail SAS	Partial evidence	Nantes, FranceHQ checked Sep 17, 2026	51-200	106 contacts →
	Partial evidence “Présent depuis 2003 dans l’Ingénierie et l’Ingénierie-Conseil du Contrôle-Commande et Signalisation ferroviaire, SAFERAIL est aujourd’hui Leader dans son domaine en France.” Source: RevenueBase Database · checked Sep 17, 2026
8	FER Expert	Indirect evidence	Bruz, FranceHQ checked Sep 17, 2026	51-200	106 contacts →
	Indirect evidence “L’esprit toujours orienté vers le client, Fer Expert est la solution à tous vos besoins en termes de sécurisation et suivi technique de chantiers ferroviaires.” Source: RevenueBase Database · checked Sep 17, 2026
9	Safety FER	Partial evidence	Guyancourt, FranceHQ checked Sep 17, 2026	51-200	87 contacts →
	Partial evidence “Depuis sa création en 2010, SAFETY FER développe son savoir-faire et diversifie son activité dans le but de réaliser des prestations de sécurité et de signalisation ferroviaires…” Source: RevenueBase Database · checked Sep 17, 2026
10	Cibest Group	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	51-200	46 contacts →
	Indirect evidence “Groupe industriel français, nous concevons, fabriquons et déployons des solutions dédiées au Transport Public depuis plus de 30 ans.” Source: RevenueBase Database · checked Sep 17, 2026
11	TGSO	Indirect evidence	Redon, FranceHQ checked Sep 17, 2026	11-50	36 contacts →
	Indirect evidence “Créé en 1991, il y a plus de 30 ans, TGSO est un Bureau d’études en signalisation ferroviaire.” Source: RevenueBase Database · checked Sep 17, 2026
12	Sintra	Indirect evidence	Bouc-bel-air, FranceHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “SINTRA est une entreprise spécialisée dans le domaine de la signalisation ferroviaire depuis plus de 25 ans.” Source: RevenueBase Database · checked Sep 17, 2026
13	Seca Systemes	Indirect evidence	Lyon, FranceHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “Bienvenue sur la page officielle de SECA Ingénierie des Systèmes, entreprise spécialisée dans la conception et la réalisation de solutions innovantes dans le secteur ferroviaire.” Source: RevenueBase Database · checked Sep 17, 2026
14	Martin SIG	Indirect evidence	Scherwiller, FranceHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Spécialiste des travaux de signalisation ferroviaire” Source: RevenueBase Database · checked Sep 17, 2026
15	Feroway	Indirect evidence	Cergy, FranceHQ checked Sep 17, 2026	201-500	13 contacts →
	Indirect evidence “Feroway, la marque d'ETF qui regroupe les activités de conception de systèmes de sécurité ferroviaire, depuis la préparation des travaux, en passant par l’acheminement du…” Source: RevenueBase Database · checked Sep 17, 2026
16	Study Rail	Partial evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “STUDY RAIL est une entreprise dynamique spécialisée dans l'ingénierie ferroviaire et urbaine, en pleine expansion sur les marchés français et internationaux.” Source: RevenueBase Database · checked Sep 17, 2026
17	Tagmaster France	Partial evidence	Bagneux, FranceHQ checked Sep 17, 2026	51-200	11 contacts →
	Partial evidence “TagMaster est une société axée sur la conception et la commercialisation de systèmes et de solutions basés sur les technologies radio, radar ou magnétique.” Source: RevenueBase Database · checked Sep 17, 2026
18	Frauscher Sensor Technology France	Partial evidence	Haguenau, FranceHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Frauscher Sensor Technology fournit une des gammes de composants les plus fiables au monde pour la détection des trains et le contrôle des objets en bord de voie.” Source: RevenueBase Database · checked Sep 17, 2026
19	Savoir-Fer	Indirect evidence	Goussainville, FranceHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “SAVOIR FER est une entreprise d'expertise du groupe NEORAIL, spécialisée dans les prestations de sécurité ferroviaires.” Source: RevenueBase Database · checked Sep 17, 2026
20	Ferwest	Indirect evidence	FranceHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “FERWEST, entreprise de travaux et de prestations de sécurité ferroviaire.” Source: RevenueBase Database · checked Sep 17, 2026
21	Sig4 Engineering	Indirect evidence	La Ciotat, FranceHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “SIG4 Engineering propose des services hautement qualifiés dans le secteur de la signalisation ferroviaire sécuritaire SIL4” Source: RevenueBase Database · checked Sep 17, 2026
22	Phasetec	Partial evidence	Saint-avertin, FranceHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “https://phasetec.fr/ At PhaseTec, we are committed to elevating railway safety and reliability with solutions ranging from SIL2 to SIL4.” Source: RevenueBase Database · checked Sep 17, 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: rail safety technology companies. 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 rail safety technology companies.
Partial evidence: Its own public description names part of rail safety technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name rail safety technology companies. 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 22 of 46 rail safety technology companies based in France

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Rail safety technology companies based in France at a glance

As of Sep 17, 2026

38.3%Verified-email coverage

80.6Average contacts per company

11-50Median size (employees)

15.2%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 46 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 rail safety technology companies, 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 France whose own description of what they do matches “rail safety technology companies”. 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 rail safety technology companies), 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 rail safety technology companies, and records with no verified work email. Companies headquartered outside France 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, 1,420 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 17, 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 rail safety technology companies, 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 rail safety technology companies are there based in France?

RevenueBase identified 46 rail safety technology companies headquartered in France 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?

TSO, headquartered in Chelles, tops this list with the largest team on record.

Which city has the most rail safety technology companies?

Paris leads with 7 headquartered companies, followed by Cergy (2) and Chelles (2).

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 1,420 verified decision-maker contacts tracked across these 46 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 17, 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.