Transport Authorities
Take back control of your railway data
The independent, AI-augmented client-side advisory (AMO) for the authorities that fund a delegated service. Steer, audit and negotiate your contracts on facts — not on the operator's declarations.
Contractual advisory • Data audit • Competition readiness
Audit turnaround, vs. D+30 for traditional methods.
Breaking the information asymmetry
Transport authorities fund a delegated service based on the operator's declarations — with no independent way to verify them. To steer their contracts, audit penalties and prepare for competition, they lack a trusted third party, independent of the operator.
The glass ceiling
Your penalties are capped, but the disruptions experienced by your passengers are not.
The black box
A large share of incidents is classified by the operator itself, often under exonerating causes (weather, infrastructure, third parties).
Undelivered service
Are you paying for trains that don't run, or that stop before their terminus?
The Markellia mission
Markellia is the independent client-side advisory (AMO) for transport authorities. We support you across the full lifecycle of your contracts — diagnosis, negotiation, execution, renewal — leveraging open data, AI and our railway expertise. We are paid only by the authority, never by the operator.
From audit to steering, all the way to competition
We reconstruct the reality of the service delivered from open data, then equip your contractual steering: grey-zone reclassification and support for drafting your future tenders.
Verify service reality: did each billed train actually run?
Measure punctuality: delays by train, station and line.
Detect unexpected cancellations and ghost trains.
Distinguish internal causes (penalisable) from external causes (force majeure).
Identify causes via AI: strikes, weather, construction, equipment failures.
Produce automated analysis reports (daily or weekly).
Reduce the grey zone: reclassify delays as internal causes, hence penalties.
Financial audit
Penalties
We track the “Invisible Undelivered Service”: ghost trains, route limitations, late cancellations.
We quantify the precise amount of unreceived savings (beyond penalty caps).
Contract steering
Grey Zone
We reclassify root causes day after day. A rolling stock failure hidden behind an infrastructure incident? Staff shortage masked by weather?
We restore contractual truth, month after month.
Data strategy
Autonomy
We help transport authorities build the data clauses of their contracts: data access requirements, auditable indicators, governance.
A sovereign data platform, hosted in France
Markellia continuously ingests the operator's public data and autonomously computes the contractual gaps owed to the authority.
Data sources
Public operator data, field sensors, reference catalogs and AI models.
Ingestion & Storage
A sovereign lakehouse hosted on OVHcloud, in France.
Analysis & Reconciliation
Cross-referencing planned service with actual delivery, line by line, train by train.
Delivery
app.markellia.com (reports) • Natural language AI assistant
Autonomy accelerator for transport authorities
Sovereignty
Data stored and processed in France (OVHcloud)
Transparency
Rebalances the relationship with the operator
Independence
Paid by the authority alone, never by the operator.
Pooled cost
Shared infrastructure across all regions: 10–50× cheaper than a tool built alone.
Rail & urban transport
Our core business: auditing TER conventions. The same approach extends to urban transport contracts.
TER conventions & urban contracts
Auditing of TER conventions — and, by extension, urban transport contracts: penalties, grey zone, competition readiness. Delivery on app.markellia.com.
Expertise from the inside
Markellia is not an external audit firm: we come from the data leadership of the incumbent operator, whose information systems we designed and ran.

Arnaud LUTELLIER
Founder & CEO · 25 years leading data (Canal+, SNCF, Lacoste)
He turns technical information into a financial performance lever for Transport Authorities.
“We don’t guess how your data is produced. We know.”
Markellia separately runs an independent editorial Observatory on AI and the oversight of mobility public-service contracts, in partnership with the Ville de Demain incubator at Station F.
Visit the Observatory →A risk-free experimentation
6-month pilot
Algorithm configuration on your tariff appendix. Return-on-investment evaluation in real conditions.
Platform & AI
Access to the Markellia platform and AI assistant for your teams.
Monthly Reports
Reconciliation report financially identifying gaps between operator declarations and field reality.
Innovative procurement
Direct contract, no tendering required (Art. R2122-9-1 CCP, <€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 does a Markellia audit work?▼
An audit covers a raw data sample spanning one quarter of operations — past (if data is available) or upcoming. It 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. A large share of incidents is classified by the operator itself, 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 from the first detected anomalies typically cover Markellia’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 Arnaud Lutellier (Founder & CEO), a CentraleSupélec engineer and data leader for 25 years (Canal+, SNCF, Lacoste). He led the data and customer platforms of SNCF Gares & Connexions for more than ten years.

