Transport Authorities
Take back control of your railway data
Markellia turns information asymmetry into a lever for financial and contractual performance.
Penalty Audit • "Grey Zone" Analysis • Competition Readiness
Request a Flash DiagnosticInformation asymmetry is costing you dearly.
You fund the railway system, but you don’t control the data used to bill you.
The Glass Ceiling
Your penalties are capped, but the disruptions experienced by your passengers are not.
The Black Box
80% of incidents are classified by the operator themselves, often under exonerating causes (weather, infrastructure, third parties).
Undelivered Service
Are you really paying for trains that don’t run or stop before their terminus?
We make your data “Sovereign”.
Financial Audit
Penalties
We track the “Invisible Undelivered Service”: ghost trains, route limitations, late cancellations.
We calculate the exact amount of unreceived savings (beyond penalty caps).
Operational Audit
Grey Zone
We reclassify root causes. A rolling stock failure hidden behind an infrastructure incident? Staff shortage masked by weather?
We restore contractual truth.
Data Strategy
Horizon 2030
We build your own data repository to prepare for market opening and challenge future operators on solid foundations.
Expertise from the Inside.
Markellia is not an external audit firm. We are the former executives who built and managed the incumbent operator’s information systems.

Arnaud LUTELLIER
Chief Data Officer (ex SNCF Gares & Connexions / Canal+)
He turns technical information into a financial performance lever for Transport Authorities.

Olivier BEAUREPAIRE
Ex-Chief Data & AI Officer (TER France, SNCF Voyageurs)
He designs sovereign AI architectures enabling massive transport data auditing.
“We don’t guess how your data is produced. We know.”
A surgical intervention.
Flash Audit
4 weeks. Analysis of a raw data sample (1 quarter).
Gap Mapping
Identification of financial opportunities and “Blind Spots”.
Self-Financing
Our fee is often covered from the first month of detected anomalies.
Innovative Procurement
Rapid intervention without tendering (<€100k).
Frequently Asked Questions
What is a railway data audit for a Transport Authority?▼
A railway data audit is an independent analysis of production data (traffic, incidents). Markellia performs this work by cross-referencing its own open data with data provided by the operator (when available). This approach identifies gaps between reported figures and operational reality, revealing unapplied penalties and misclassified incident causes.
How long does a Markellia flash audit take?▼
A Markellia flash audit takes 6 weeks. It covers a raw data sample spanning one quarter of operations, which can be a past quarter (if data is available) or an upcoming period. The audit produces a detailed map of financial and operational gaps.
What is the "grey zone" in railway data?▼
The "grey zone" refers to incidents whose root cause is ambiguous or misclassified. About 80% of incidents are classified by the operator themselves, often under exonerating causes (weather, infrastructure, third parties). Markellia reclassifies these causes to restore contractual truth.
How does Markellia fund its services?▼
Markellia’s engagements are often self-financed: savings identified in the first month of detected anomalies typically cover the firm’s fees. Additionally, engagements under €100,000 can be carried out under innovative procurement rules, without a formal tender process.
What is the expertise of the Markellia team?▼
Markellia was founded by two former data executives from the SNCF group. Arnaud Lutellier, ex-Chief Data Officer of SNCF Gares & Connexions and Canal+, and Olivier Beaurepaire, ex-Chief Data & AI Officer of TER France and SNCF Voyageurs. They built and managed the incumbent operator’s information systems.