• March 2026

A twelve-axle low-loader convoy transporting a 100-tonne transformer at night may appear spectacular, but such operations are indispensable for major infrastructure projects across Europe. Heavy and oversize transports account for only a small fraction of overall freight traffic. Without them, the construction of wind farms, the relocation of industrial machinery, and the expansion of bridges and tunnels would come to a standstill. They form a logistical backbone for the energy transition, industrial production, and large construction projects, and their importance is expected to grow further.

At the same time, these transports place significant strain on road infrastructure. Bridges, tunnels, and pavements must withstand exceptional axle loads and dimensions. As a result, special administrative permits are legally required once loads exceed defined thresholds. These procedures protect infrastructure assets and ensure traffic safety.

Europe, however, does not apply a single, harmonized system. Each country operates its own legal and administrative framework. For transport companies, cross-border movements therefore involve navigating multiple procedures, authorities, and operational requirements. What may be approved digitally within minutes in the Netherlands can take several weeks in France or Austria, while Germany relies on coordinated federal procedures and Switzerland applies a centralized decision model.

Common foundations of approval systems

Despite national differences, heavy and oversize transport approvals across Europe follow a shared fundamental principle: once a transport exceeds statutory standard limits, a prior special permit is required. Approval procedures typically demand detailed information on the vehicle (axle loads, dimensions), the load, and the intended route. Infrastructure protection and road safety are the primary concerns in all assessed systems. Bridges, tunnels, and other sensitive road sections must therefore be evaluated, and operational conditions such as escort vehicles, night-driving restrictions, or speed limits are imposed accordingly.

In recent years, all countries examined have increasingly relied on digital platforms to structure and accelerate these complex processes.

Germany uses the nationwide VEMAGS platform for application submission, stakeholder coordination, and digital permit issuance.

Austria requires the use of the central e-government portal SOTRA for special transports.

Switzerland operates a national ASTRA online portal for exceptional permits, while the

Netherlands processes applications via the vehicle authority RDW, supported by a digital route preview system (DWO).

France introduced the platform Mon Transport Exceptionnel (MTE) in 2023, through which all applications are submitted and forwarded to the competent regional authorities.

These platforms consolidate information flows and ensure that all relevant stakeholders, such as road authorities, police, and infrastructure engineers, are involved early in the process. Ideally, the outcome is a digitally issued permit that can be presented during roadside inspections.

Diverging national approaches and procedures

Approval for heavy and oversize transport varies considerably by country. National approaches differ in administrative structures, decision-making authority, and the role of digital tools, which directly affect transparency, predictability, and approval times.

Administrative responsibilities and governance structures

Despite comparable objectives, approval systems differ considerably in organizational design.

  • 1.

    The Netherlands

    stands out for its highly centralized model: the national authority RDW can independently issue permits for many standard cases within seconds, based on automated checks against a comprehensive central database.

    Only transports exceeding predefined thresholds are forwarded to the responsible road authorities for case-by-case assessment.
  • 2.

    Switzerland

    follows a similar “one-stop-shop” principle via the ASTRA federal portal. Applications are submitted digitally and internally distributed to the competent bodies – cantonal authorities for cantonal roads and ASTRA for national highways. Decisions are coordinated, and applicants typically receive a single permit.

    This close cooperation between federal and cantonal levels results in fast procedures, with simple cases often approved within a few days and even complex transports rarely taking longer than two weeks.
  • 3.

    Germany

    operates a federally structured approval system. While applications are submitted through the national VEMAGS platform, the authority to issue permits lies with regional bodies - typically state or local road authorities. As a result, both processing times and operational requirements can vary significantly from one region to another. For example, applications submitted in Bavaria may undergo different review procedures or follow different timelines than those in North Rhine–Westphalia.

    Complex transports often require several weeks for approval due to the large number of authorities involved.
  • 4.

    Austria

    also follows a federal model. Applications are submitted through the national SOTRA platform, which coordinates the process and integrates the motorway operator ASFINAG. Despite this centralized digital entry point, final decisions rest with the provincial governments. Each federal state may apply its own regulations, such as specific requirements for escort vehicles or designated travel times.

    As in Germany, approvals for complex transports frequently take several weeks because multiple authorities are involved.
  • 5.

    France

    combines elements of both approaches. Applications are submitted centrally via the MTE platform, but decisions are made at the regional level. Each prefecture reviews transports on its territory and may issue partial approvals. For long-distance transports crossing several départements, multiple approvals are often required. Operational conditions, such as permitted driving times (often night-only or excluding weekends) and escort requirements, also vary regionally.

    Despite digitalization, coordination efforts remain high, and many transport companies rely on specialised service providers to manage approvals across regions.

Route planning and infrastructure assessment

The Netherlands offers a digital pre-planning tool via the DWO system, allowing applicants to plan routes that account for known restrictions such as bridge capacities, height limits, and construction sites. The system indicates whether a route is feasible in principle before an application is submitted.

In Germany and Austria, no comparable open route-planning databases exist. Route feasibility is assessed primarily during the administrative approval process, which increases uncertainty for operators and often leads to subsequent route adjustments if infrastructure constraints are identified.

France similarly relies on authority-led route checks, although a public registry of approved routes exists, deviations typically require additional coordination. Switzerland provides publicly accessible maps of approved routes and bridge load limits (e.g., via Truckinfo and annual ASTRA publications), facilitating planning.

As a result, transport companies in the Netherlands and Switzerland are more often able to identify viable routes in advance, while in Germany, Austria, and France, the final route is frequently confirmed only after the permit decision.

Processing times

Processing times vary significantly. The Netherlands and Switzerland can approve many transports within a few days thanks to centralized, data-driven systems. In Switzerland, decisions within three working days are common for standard cases, whereas in the Netherlands, permits can be issued in near real time for routine transport. Austria and France typically require several weeks for complex cases due to extensive coordination, and in Germany, timelines depend strongly on route complexity and the number of regions involved.

Cross-cutting challenges and opportunities

The comparison highlights administrative fragmentation as a major challenge, particularly in federally or regionally decentralized systems. Differing regional practices and requirements increase planning uncertainty and administrative effort, especially for cross-border transports.

Limited transparency of route and infrastructure data represents another key issue. In many countries, applicants cannot reliably assess route feasibility in advance, as bridge capacity and clearance checks are conducted only after submission. Although electronic application tools exist, they are often not integrated with up-to-date infrastructure databases or interactive maps. Communication with road authorities and police often occurs outside core platforms, reducing efficiency.

At the same time, significant opportunities emerge. The Dutch and Swiss systems demonstrate how centralized decision-making authority, combined with high-quality shared infrastructure data, can drastically reduce processing times without compromising safety. Expanding such data-driven models through digital maps with defined load limits and standard routes could enable more automated approvals for recurring transport configurations.

Further potential lies in partial harmonization at the EU level. Standardized permit categories, harmonized data requirements, and mutual recognition of vehicle configurations or technical assessments could reduce administrative friction, particularly for international transports. Ongoing discussions on revising Directive 96/53/EC and increased attention to military mobility underscorthe growing relevance of procedural coordination and digital interoperability.

Across Europe, heavy and oversize transport approvals are based on a shared principle:

any transport exceeding statutory limits requires prior authorization to protect infrastructure and traffic safety.

 

However, the practical implementation of this principle varies significantly between countries. While all examined systems rely increasingly on digital platforms and similar technical assessments, administrative structures and procedural details differ substantially.

Centralised models in the Netherlands and Switzerland enable faster and more uniform decision-making, whereas federally structured systems in Germany and Austria allow regional adaptation but often involve longer lead times and reduced transparency. France occupies an intermediate position, combining a central application portal with decentralised implementation. Digitalisation has improved traceability and communication everywhere, but it has not eliminated procedural complexity. As long as critical infrastructure data remain fragmented and multiple authorities are involved, heavy and oversize transport approvals will remain multi-stage processes.

This comparative overview highlights the structural differences that currently shape heavy and oversize transport approvals across Europe.

At the same time, developments at EU level suggest that the regulatory environment may be entering a new phase. Ongoing initiatives, including the revision of Directive 96/53/EC and increasing attention to military mobility, indicate a stronger emphasis on procedural coordination, digital interoperability, and cross-border transparency.

In a follow-up paper we will therefore move beyond national comparisons and examine the harmonisation potential at EU level. This paper will analyse the scale and relevance of cross-border heavy and oversize transport, assess the political and regulatory drivers behind current initiatives, and evaluate to what extent these measures can realistically reduce administrative fragmentation across the European transport landscape.

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