Tolling platforms at European scale

DNA Solutions does both. We build toll backend platforms and charging engines from scratch, and we integrate them with the systems an operator already runs. A typical engagement starts with the mediation layer that turns raw GPS and gantry events into rated transactions, then adds the pricing and tax rules each country requires, and finally the invoicing and reconciliation steps. On the integration side, we connect that pipeline to financial systems through SAP-AFAS reconciliation, expose operational dashboards for the teams that monitor traffic and revenue, and feed the data sources back into the operator's reporting. Whether the work is a full build or an extension of an existing backend depends on what is already in place, which we assess before committing to an approach.

Yes. We design charging architecture aligned with the requirements of EETS, the European Electronic Toll Service, so a single platform can serve interoperable toll services across borders. Pricing and tax rules are handled per country and per region as time-windowed configuration, which means a rate change applies from its effective date without rewriting historical invoices. Multi-currency and multi-tax stay separate concerns, because a country can share a currency while following entirely different tax rules. The same rated event can feed both the responsible toll charger and the EETS provider without rebuilding the pipeline for each domain. Every event carries audit lineage from capture through to the final charge, so an external auditor can trace which rate applied to which transaction, and when.

Our mediation and rating layers are designed to rate high volumes of GPS and gantry events from on-board units into billable transactions. The architecture is event-driven: ingestion is decoupled from invoicing through event streams such as Kafka, so the platform absorbs telemetry peaks without slowing down the rating run. When traffic spikes, events are queued and processed asynchronously, so the end-of-period charging cycle is never blocked by a burst of incoming data. Each raw event is kept in an append-only log, which keeps every rated transaction traceable back to the location and timestamp it came from. We size the pipeline to the operator's real flows and validate it on representative volumes before any wider rollout, and we share those volumes openly rather than quoting a single headline figure.

Engagements include Toll4Europe and Satellic, with billing and integration work on multi-country tolling infrastructure. On these platforms we have worked on the rating pipelines that turn GPS and gantry events into invoices, the multi-country pricing and tax rules that apply across borders, and the reconciliation that ties the charged events back to the financial systems. The same rating and charging core also applies beyond tolling, to telecom and mobility operators who bill high volumes of usage events. Few independent teams in Europe work directly on toll backend and EETS-grade charging logic, which is the area we focus on here. We can walk through what is shareable from these engagements on a call, within the confidentiality each client agreement allows.