Custom Stadler trains debut on Naples’ Circumvesuviana

Brand-new custom-designed Stadler electric trains are beginning to enter service on the Circumvesuviana network around Mount Vesuvius, marking the first stage of a long-awaited fleet renewal on one of southern Italy’s most important tourist and commuter railways.

A tailored fleet for the Vesuvian ring

The new trains are the result of a multi-year investment program by regional operator Ente Autonomo Volturno to modernize services on the narrow-gauge Circumvesuviana lines that circle Mount Vesuvius and link Naples with destinations such as Pompeii, Herculaneum and Sorrento. Publicly available information shows that Stadler secured a framework agreement to supply up to 60 metre-gauge electric multiple units for the Vesuvian network, with an initial batch forming the core of the replacement program.

Technical documentation published by Stadler describes the trains as fully tailored to the 950-millimetre gauge infrastructure and tight clearances of the historic lines. The units, identified as ETR 300 series in Italian specialist coverage, are around 40 metres long per set and are designed for intensive suburban operation with frequent stops and high passenger turnover. They are intended to replace an aging fleet that entered service in the 1990s and now requires intensive maintenance.

Reports from railway industry outlets indicate that the first units were delivered to Naples in late 2024 and subsequently underwent several months of static and dynamic testing. By early 2026, at least a handful of trains had arrived in the region, moving through certification and trial phases prior to carrying passengers.

Sector coverage notes that the fleet renewal on the Vesuvian lines is part of a wider rolling stock modernization across EAV’s networks, but it has been particularly closely watched because of the importance of the Circumvesuviana routes for both local residents and the international tourism market.

From certification to first passenger service

Italian rail news reports indicate that the first new Stadler train obtained its authorization to enter service from the national railway safety agency in mid-2026, following what was described as a lengthy technical and regulatory process. This authorization, known as AMIS in Italy, is the formal step that allows commercial operation with passengers.

Prior to approval, the units were subjected to acceptance tests on the Vesuvian network, including braking performance, interface with signalling and power systems, and operation on tight curves and steep gradients typical of the line’s profile. Information published by EAV and specialist rail outlets highlights that these tests were necessary to adapt the tailored design to local operating conditions and to demonstrate compliance with current European safety standards.

Once authorization was granted, the operator began phasing the first train into regular timetabled services. Initial deployment has focused on routes with high demand to archaeological sites, where modern rolling stock is expected to improve punctuality and resilience during the summer peak. For the moment, the new trains are running alongside the existing fleet, creating a mixed operation that is likely to continue until more units are delivered and commissioned.

Operational data shared in public briefings suggests that the pace of introduction is closely tied to the delivery schedule and the timing of further safety approvals. The full replacement of older sets will be gradual, but the entry into passenger service of the first train is viewed as a symbolic turning point after years of planning and delays.

Design focused on comfort, accessibility and capacity

According to technical brochures released by Stadler, the Vesuvian trains feature low-floor entrances aligned with platform height to facilitate step-free access. Wide automatic doors and generous vestibules are intended to speed up boarding and alighting, a key factor on a network with short station spacing and intense commuter flows.

The interior layout has been designed to maximize capacity while maintaining a bright, open environment. Open gangways between cars, large windows and LED lighting contribute to a more modern ambiance than the older articulated units they will replace. Published material indicates that the trains incorporate air conditioning throughout, a significant upgrade for passengers traveling in the hot, humid conditions of the Neapolitan summer.

Provision for passengers with reduced mobility appears central to the concept. Documentation describes dedicated spaces for wheelchairs and pushchairs, as well as priority seating near the doors. Handrails and grab poles have been arranged to aid movement along the train, and the wide corridors are intended to make it easier for passengers to distribute themselves evenly between cars.

The trains are also equipped with contemporary passenger information systems, including audio and visual announcements, internal displays and external destination indicators. While the exact interior colour schemes are tailored to the regional brand, images released by the manufacturer suggest a bright, contrasting palette intended to improve wayfinding and create a distinct identity for the renewed Vesuvian services.

Strategic role for tourism and daily mobility

The Circumvesuviana network plays a dual role, carrying both local commuters from the dense eastern suburbs of Naples and large numbers of tourists heading to archaeological attractions such as Pompeii and Herculaneum, as well as to coastal resorts on the Sorrento Peninsula. Travel advice publications frequently note that the line offers the most direct rail access to many of these destinations.

In this context, the introduction of new rolling stock is seen in regional planning documents as a key lever to improve the perceived quality and reliability of public transport. More modern trains are expected to support better punctuality and reduce unplanned cancellations linked to technical failures of older vehicles. Increased comfort, air conditioning and clearer information systems are also likely to be noticeable changes for visitors who currently encounter a mix of refurbished but aging trains.

Reports from local media over recent years have highlighted strain on the Vesuvian network during peak tourism seasons, with overcrowded services and sporadic disruptions. The Stadler fleet renewal, combined with ongoing infrastructure works such as level crossing removals and station upgrades, is intended to address these capacity and reliability challenges over the medium term.

Regional transport strategies presented to the public position the Vesuvian lines as a backbone for sustainable access to cultural and natural heritage sites. By refreshing the fleet with energy-efficient, higher-capacity trains, the authorities aim to shift more journeys from road to rail, limiting congestion and emissions on the busy coastal corridors between Naples, Pompeii and Sorrento.

Delivery schedule and long-term outlook

Financial and contract information released by Stadler and regional authorities indicates that the Vesuvian trains form part of a larger framework agreement permitting up to around 60 units for the network, with funding in part linked to national recovery and resilience instruments. Italian media reports suggest that several units are already on Neapolitan soil, with additional trains due to arrive through 2026 and beyond.

The authorization and entry into service of the first train sets a template for subsequent units, which will follow similar testing and approval pathways but may benefit from the experience gained during the initial certification. As more trains pass through this process, the operator is expected to gradually increase the share of modern rolling stock on the busiest routes and eventually cascade remaining legacy vehicles to less demanding services or withdraw them entirely.

Analysts following the Italian regional rail sector note that the Vesuvian project reflects a broader pattern in which customized, platform-based train designs are being used to modernize older suburban networks while respecting complex local constraints. For the Circumvesuviana, the combination of narrow gauge, sharp curves and constrained station layouts has made a tailor-made approach almost unavoidable.

For travelers, the impact will be felt incrementally rather than in a single overnight change. Over the next few seasons, visitors heading from central Naples to Mount Vesuvius, Pompeii or the Sorrento coast are increasingly likely to encounter the new Stadler trains. Their entry into service signals a shift toward a more contemporary standard of rail travel around one of Europe’s most famous volcanoes, even as the wider modernization program continues to unfold.