Sustainable mobility planning is entering a new phase in Europe. In 2026, the European Commission published the third edition of its SUMP Guidelines — Sustainable Urban Mobility Plan — while the revised TEN-T Regulation now requires 431 urban nodes across the trans-European network to adopt a Sustainable Urban Mobility Plan by the end of 2027.
This European momentum is being translated differently from one country to another, but the underlying logic is the same: moving from a static document to a living plan, measured, updated and used over time.
In France, the Mobility Orientation Law — LOM — transformed former Urban Transport Plans into Mobility Plans, with dedicated requirements for mobility organising authorities and a simplified framework for less dense territories. In Spain, the Ley 9/2025 de Movilidad Sostenible is now extending the need for Sustainable Urban Mobility Plans to many local authorities and inter-municipal bodies.
Across national frameworks, the same requirement is emerging: a reliable diagnosis, comparable indicators over time, and continuous monitoring capacity — up to the production of the compliance document itself. This is exactly what Nextérité provides with Trajespace and its Mobidiag module.
Mobility plans must be monitored over time
Mobility plans can no longer be treated as static documents. Whether it is the revision of a Mobility Plan in France, the first development of a PMUS in Spain or the implementation of a SUMP framework elsewhere in Europe, they need to become living tools: able to support public decisions, prioritise actions and demonstrate results.
For municipalities, inter-municipal bodies and mobility authorities, this means answering several key questions:
* What are the main mobility flows across the territory?
* Which transport modes are actually being used?
* Which areas concentrate the most important origins and destinations?
* Where is there a mismatch between mobility demand and the public transport offer?
* Which actions can generate the strongest modal shift potential?
* How can changes be measured over time and turned into a compliant planning document without starting from scratch at every deadline?
Traditional methods — occasional surveys, isolated counts — remain useful. But they are costly to repeat, difficult to compare consistently and often insufficient to track behavioural change in detail or maintain a living regulatory document.
Trajespace: the data engine for diagnosis and monitoring
Trajespace is Nextérité’s mobility analysis engine, already deployed with mobility organising authorities. It reconstructs observed movements across a territory through several dimensions: origin-destination, transport mode, time period, probable trip purpose and geographic area.
The solution can produce:
* origin-destination matrices ready for modelling;
* modal split analysis between car, walking, cycling and public transport;
* indicators by period, zone and mode;
* cartographic views of mobility flows;
* identification of areas where the public transport offer appears insufficient compared with observed demand;
* modal shift scenarios;
* before / after comparisons to monitor public mobility policies.
This approach enables local authorities to move from a one-off snapshot to a monitoring logic. The same data engine can be used during the initial diagnosis and then reused throughout periodic monitoring or plan revision phases, whether for a Mobility Plan revision in France or a three-year PMUS update in Spain.
Mobidiag: from diagnosis to a compliant, living document
Good data is not enough. It must be turned into a planning document that complies with regulatory requirements and can be updated over time.
This is the role of Mobidiag, the Trajespace module dedicated to the automated production of key elements of mobility plans.
Mobidiag directly uses the data and indicators produced by Trajespace to generate core components of the plan: territorial diagnosis, monitoring indicators, modal shift scenarios and analytical content. These elements can be kept up to date through revisions and regulatory updates, without having to start again from a blank page at every deadline.
This continuity between data and document is what makes it possible to speak of a “living” plan: compliance is not frozen on the submission date, but evolves with the territory.
France and Spain: two markets, one shared dynamic
In France, the obligation has been in place since the LOM. Many mobility authorities are now approaching a revision deadline for their Mobility Plan or are launching a simplified Mobility Plan for the first time. This is a key moment to move from survey-based approaches to continuous monitoring based on real-world data, while reducing the time and cost of producing the document.
In Spain, Ley 9/2025 is opening a market that is still taking shape. Many local authorities are facing this obligation for the first time, with a strong need for method, tools and partners able to support them from diagnosis to a compliant planning document.
In both cases, Trajespace and Mobidiag provide the same benefits: a precise understanding of real mobility patterns, an objective basis for prioritising actions, and the ability to demonstrate results and produce the document itself without starting from zero at each deadline.
A tool for elected officials, technical teams and planning consultants
For elected officials, the solution provides a clear reading of major mobility issues: dominant flows, trip-generating areas, car dependency, and the potential of active modes or public transport.
For technical teams, it provides structured and exportable data: O-D matrices, indicators, maps, volumes, distances and speeds, as well as plan components already formatted through Mobidiag.
For consulting firms and teams drafting mobility plans, it acts as an accelerator for both diagnosis and drafting. It helps base recommendations on objective evidence and reduces the time required to produce the regulatory document.
Turning a regulatory requirement into a steering process
The opportunity created by the SUMP framework and its national implementations is not limited to producing a mobility plan. It is mainly about monitoring it over time.
An initial diagnosis through Trajespace can become the starting point for a broader relationship: regular document updates via Mobidiag, three-year monitoring or next plan revision, environmental indicators, before / after comparisons, simulation of new lines or analysis of modal shift potential.
In this logic, Nextérité helps transform a regulatory requirement into a genuine steering tool for mobility policy — from raw data to the compliant document, in France, Spain and across Europe.
Nextérité, partner for measurable mobility
Nextérité supports transport authorities, local authorities and public stakeholders in analysing, monitoring and understanding mobility, in France and now in Spain.
With Trajespace for diagnosis and monitoring, and Mobidiag for producing and updating the planning document, Nextérité covers the full cycle: measure, understand, steer and remain compliant without repeated effort.
Whether you are preparing a Mobility Plan revision in France, developing a PMUS for the first time in Spain, or addressing SUMP requirements in another European context, this approach offers a clear opportunity: producing mobility plans that are more reliable, more readable and easier to maintain over time.
Are you steering a mobility plan for your territory? Let’s discuss how Trajespace and Mobidiag can fit into your approach.